v0.17.7

There was an issue with navigation that would cause multiple text editors to be opened for the same file.
Turns out the issue was related to the use of URIs that included the fragment component, as well as the interaction between the link provider and the definition provider.
This commit fixes the issue.

.all-contributorsrc

@@ -788,6 +788,69 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "iam-yan",
+      "name": "Yan",
+      "avatar_url": "https://avatars.githubusercontent.com/u/48427014?v=4",
+      "profile": "https://github.com/iam-yan",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "jimt",
+      "name": "Jim Tittsler",
+      "avatar_url": "https://avatars.githubusercontent.com/u/180326?v=4",
+      "profile": "https://WikiEducator.org/User:JimTittsler",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "MalcolmMielle",
+      "name": "Malcolm Mielle",
+      "avatar_url": "https://avatars.githubusercontent.com/u/4457840?v=4",
+      "profile": "http://malcolmmielle.wordpress.com/",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "veesar",
+      "name": "Veesar",
+      "avatar_url": "https://avatars.githubusercontent.com/u/74916913?v=4",
+      "profile": "https://snippets.page/",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "bentongxyz",
+      "name": "bentongxyz",
+      "avatar_url": "https://avatars.githubusercontent.com/u/60358804?v=4",
+      "profile": "https://github.com/bentongxyz",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "techCarpenter",
+      "name": "Brian DeVries",
+      "avatar_url": "https://avatars.githubusercontent.com/u/42778030?v=4",
+      "profile": "https://brianjdevries.com",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "cliffordfajardo",
+      "name": "Clifford Fajardo ",
+      "avatar_url": "https://avatars.githubusercontent.com/u/6743796?v=4",
+      "profile": "http://Cliffordfajardo.com",
+      "contributions": [
+        "tool"
+      ]
     }
   ],
   "contributorsPerLine": 7,

.eslintrc.json

@@ -5,14 +5,40 @@
     "ecmaVersion": 6,
     "sourceType": "module"
   },
-  "plugins": ["@typescript-eslint", "import"],
+  "env": { "node": true, "es6": true },
+  "plugins": ["@typescript-eslint", "import", "jest"],
+  "extends": [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:import/recommended",
+    "plugin:import/typescript",
+    "plugin:jest/recommended"
+  ],
   "rules": {
-    "@typescript-eslint/class-name-casing": "warn",
-    "@typescript-eslint/semi": "warn",
-    "curly": "warn",
-    "eqeqeq": "warn",
-    "no-throw-literal": "warn",
-    "semi": "off",
-    "require-await": "warn"
-  }
+    "no-use-before-define": "off",
+    "@typescript-eslint/no-use-before-define": "off",
+    "@typescript-eslint/no-explicit-any": "off",
+    "@typescript-eslint/no-non-null-assertion": "off",
+    "@typescript-eslint/explicit-function-return-type": "off",
+    "@typescript-eslint/interface-name-prefix": "off",
+    "import/no-extraneous-dependencies": [
+      "error",
+      {
+        "devDependencies": ["**/src/test/**", "**/src/**/*{test,spec}.ts"]
+      }
+    ]
+  },
+  "settings": {
+    "import/core-modules": ["vscode"],
+    "import/parsers": {
+      "@typescript-eslint/parser": [".ts", ".tsx"]
+    },
+    "import/resolver": {
+      "typescript": {
+        "alwaysTryTypes": true
+      }
+    }
+  },
+  "ignorePatterns": ["**/core/common/**", "*.js"],
+  "reportUnusedDisableDirectives": true
 }

.github/ISSUE_TEMPLATE/bug.md

@@ -1,23 +0,0 @@
----
-name: Bug report
-about: Create a report to help us be foamier
-labels: bug
----
-
-- Foam version: <!-- Check in the VSCode extension tab. -->
-- Platform: Windows | Mac | Linux
-- Issue occur on the [foam template](https://github.com/foambubble/foam-template) repo: Yes | No
-
-**Summary**
-<!-- A clear and concise description of what the bug is.-->
-
-**Steps to reproduce**
-1.
-2.
-
-**Additional information**
-<!-- Add any other context about the problem here. -->
-Feel free to attach any of the following that might help with debugging the issue:
-- screenshots
-- a zip with a minimal repo to reproduce the issue
-- the Foam log in VsCode (see [instructions](https://github.com/foambubble/foam/blob/master/docs/features/foam-logging-in-vscode.md))

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,97 @@
+name: 'Bug report'
+description: Create a report to help us improve
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thank you for reporting an issue :pray:.
+
+        This issue tracker is for reporting bugs found in `foam` (https://github.com/foambubble).
+        If you have a question about how to achieve something and are struggling, please post a question
+        inside of either of the following places:
+          - Foam's Discussion's tab: https://github.com/foambubble/foam/discussions
+          - Foam's Discord channel: https://foambubble.github.io/join-discord/g
+          
+
+        Before submitting a new bug/issue, please check the links below to see if there is a solution or question posted there already:
+         - Foam's Issue's tab: https://github.com/foambubble/foam/pulls?q=is%3Apr+is%3Aopen+sort%3Aupdated-desc
+         - Foam's closed issues tab: https://github.com/foambubble/foam/issues?q=is%3Aissue+sort%3Aupdated-desc+is%3Aclosed
+         - Foam's Discussions tab: https://github.com/foambubble/foam/discussions
+
+        The more information you fill in, the better the community can help you.
+  - type: textarea
+    id: description
+    attributes:
+      label: Describe the bug
+      description: Provide a clear and concise description of the challenge you are running into.
+    validations:
+      required: true
+  - type: input
+    id: reproducible_example
+    attributes:
+      label: Small Reproducible Example
+      description: |
+        Note:
+        - Your bug will may get fixed much faster if there is a way we can somehow run your example or code.
+        - To create a shareable example, consider cloning the following Foam Github template: https://github.com/foambubble/foam-template
+        - Please read these tips for providing a minimal example: https://stackoverflow.com/help/mcve.
+      placeholder: |
+        e.g. Link to your github repository containing a small reproducible example that the team can run.
+    validations:
+      required: false
+  - type: textarea
+    id: steps
+    attributes:
+      label: Steps to Reproduce the Bug or Issue
+      description: Describe the steps we have to take to reproduce the behavior.
+      placeholder: |
+        1. Go to '...'
+        2. Click on '....'
+        3. Scroll down to '....'
+        4. See error
+    validations:
+      required: true
+  - type: textarea
+    id: expected
+    attributes:
+      label: Expected behavior
+      description: Provide a clear and concise description of what you expected to happen.
+      placeholder: |
+        As a user, I expected ___ behavior but i am seeing ___
+    validations:
+      required: true
+  - type: textarea
+    id: screenshots_or_videos
+    attributes:
+      label: Screenshots or Videos
+      description: |
+        If applicable, add screenshots or a video to help explain your problem.
+        For more information on the supported file image/file types and the file size limits, please refer
+        to the following link: https://docs.github.com/en/github/writing-on-github/working-with-advanced-formatting/attaching-files
+      placeholder: |
+        You can drag your video or image files inside of this editor ↓
+  - type: input
+    id: os
+    attributes:
+      label: Operating System Version
+      description: What opearting system are you using?
+      placeholder: |
+        - OS: [e.g. macOS, Windows, Linux]
+    validations:
+      required: true
+  - type: input
+    id: vscode_version 
+    attributes:
+      label: Visual Studio Code Version
+      description: |
+        What version of Visual Studio Code are you using?
+        How to find Visual Studio Code Version: https://code.visualstudio.com/docs/supporting/FAQ#_how-do-i-find-the-version
+    validations:
+      required: true
+  - type: textarea
+    id: additional
+    attributes:
+      label: Additional context
+      description: | 
+        Add any other context about the problem here.
+        The Foam log output for VSCode can be found here: https://github.com/foambubble/foam/blob/master/docs/features/foam-logging-in-vscode.md

.github/ISSUE_TEMPLATE/feature.md

@@ -1,6 +0,0 @@
----
-name: Feature request
-about: Suggest an idea to help us be foamier
----
-
-<!-- Describe the feature you'd like. -->

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,42 @@
+name: Feature request
+description: Suggest an idea for the `Foam` project
+body:
+  - type: markdown
+    attributes:
+      value: |
+        This issue form is for requesting features only!
+        If you want to report a bug, please use the [bug report](https://github.com/foambubble/foam/issues/new?assignees=&labels=&template=bug_report.yml) form.
+  - type: textarea
+    validations:
+      required: true
+    attributes:
+      label: Is your feature request related to a problem? Please describe.
+      description: A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+  - type: textarea
+    validations:
+      required: true
+    attributes:
+      label: Describe the solution you'd like
+      description: A clear and concise description of what you want to happen.
+      placeholder: |
+        As a user, I expected ___ behavior but ___ ...
+        
+        Ideal Steps I would like to see:
+        1. Go to '...'
+        2. Click on '....'
+        3. ....
+  - type: textarea
+    validations:
+      required: true
+    attributes:
+      label: Describe alternatives you've considered
+      description: A clear and concise description of any alternative solutions or features you've considered.
+  - type: textarea
+    attributes:
+      label: Screenshots or Videos
+      description: |
+        If applicable, add screenshots or a video to help explain your problem.
+        For more information on the supported file image/file types and the file size limits, please refer
+        to the following link: https://docs.github.com/en/github/writing-on-github/working-with-advanced-formatting/attaching-files
+      placeholder: |
+        You can drag your video or image files inside of this editor ↓

.gitignore

@@ -9,3 +9,4 @@ dist
 docs/_site
 docs/.sass-cache
 docs/.jekyll-metadata
+.test-workspace

.vscode/launch.json

@@ -6,15 +6,20 @@
   "version": "0.2.0",
   "configurations": [
     {
-      "type": "node",
       "name": "Debug Jest Tests",
+      "type": "extensionHost",
       "request": "launch",
-      "runtimeArgs": ["workspace", "foam-vscode", "run", "test"], // ${yarnWorkspaceName} is what we're missing
-      "args": ["--runInBand"],
-      "runtimeExecutable": "yarn",
-      "console": "integratedTerminal",
-      "internalConsoleOptions": "neverOpen",
-      "disableOptimisticBPs": true
+      "args": [
+        "${workspaceFolder}/packages/foam-vscode/.test-workspace",
+        "--disable-extensions",
+        "--disable-workspace-trust",
+        "--extensionDevelopmentPath=${workspaceFolder}/packages/foam-vscode",
+        "--extensionTestsPath=${workspaceFolder}/packages/foam-vscode/out/test/suite"
+      ],
+      "outFiles": [
+        "${workspaceFolder}/packages/foam-vscode/out/**/*.js"
+      ],
+      "preLaunchTask": "${defaultBuildTask}"
     },
     {
       "name": "Run VSCode Extension",
@@ -24,8 +29,25 @@
       "args": [
         "--extensionDevelopmentPath=${workspaceFolder}/packages/foam-vscode"
       ],
-      "outFiles": ["${workspaceFolder}/packages/foam-vscode/out/**/*.js"],
+      "outFiles": [
+        "${workspaceFolder}/packages/foam-vscode/out/**/*.js"
+      ],
       "preLaunchTask": "${defaultBuildTask}"
+    },
+    {
+      "type": "node",
+      "name": "vscode-jest-tests",
+      "request": "launch",
+      "console": "integratedTerminal",
+      "internalConsoleOptions": "neverOpen",
+      "disableOptimisticBPs": true,
+      "cwd": "${workspaceFolder}/packages/foam-vscode",
+      "runtimeExecutable": "yarn",
+      "args": [
+        "jest",
+        "--runInBand",
+        "--watchAll=false"
+      ]
     }
   ]
 }

.vscode/settings.json

@@ -20,13 +20,13 @@
     "**/node_modules/**/*",
     "packages/**/*"
   ],
-  "editor.defaultFormatter": "esbenp.prettier-vscode",
-  "prettier.requireConfig": true,
-  "editor.formatOnSave": true,
   "editor.tabSize": 2,
-  "jest.debugCodeLens.showWhenTestStateIn": ["fail", "unknown", "pass"],
+  "editor.formatOnSave": true,
+  "editor.formatOnSaveMode": "file",
+  "editor.defaultFormatter": "esbenp.prettier-vscode",
+  "jest.autoRun": "off",
+  "jest.rootPath": "packages/foam-vscode",
+  "jest.jestCommandLine": "yarn jest",
   "gitdoc.enabled": false,
-  "jest.autoEnable": false,
-  "jest.runAllTestsFirst": false,
   "search.mode": "reuseEditor"
 }

.yarnrc

@@ -0,0 +1 @@
+--ignore-engines true

docs/dev/releasing-foam.md

@@ -0,0 +1,27 @@
+# Releasing Foam
+
+1. Get to the latest code
+   - `git checkout master && git fetch && git rebase`
+2. Sanity checks
+   - `yarn reset`
+   - `yarn test`
+3. Update change log 
+   - `./packages/foam-vscode/CHANGELOG.md`
+   - `git add *`
+   - `git commit -m"Preparation for next release"`
+4. Update version
+   - `$ cd packages/foam-vscode`
+   - `foam-vscode$ yarn lerna version <version>` (where `version` is `patch/minor/major`) 
+   - `cd ../..`
+5. Package extension
+   - `$ yarn vscode:package-extension`
+6. Publish extension
+   - `$ yarn vscode:publish-extension`
+7. Update the release notes in GitHub
+   - in GitHub, top right, click on "releases"
+   - select "tags" in top left
+   - select the tag that was just released, click "edit" and copy release information from changelog
+   - publish (no need to attach artifacts)
+8. Annouce on Discord
+
+Steps 1 to 6 should really be replaced by a GitHub action...

docs/features/backlinking.md

@@ -1,6 +1,6 @@
 # Backlinking
 
-When using [[wikilinks]], you can find all notes that link to a specific note in the [VS Code Markdown Notes](https://marketplace.visualstudio.com/items?itemName=kortina.vscode-markdown-notes) **Backlinks Explorer**
+When using [[wikilinks]], you can find all notes that link to a specific note in the **Backlinks Explorer**
 
 - Run `Cmd` + `Shift` + `P` (`Ctrl` + `Shift` + `P` for Windows), type "backlinks" and run the **Explorer: Focus on Backlinks** view.
 - Keep this pane always visible to discover relationships between your thoughts

docs/features/note-templates.md

@@ -45,10 +45,9 @@ In addition, you can also use variables provided by Foam:
 | -------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | `FOAM_SELECTED_TEXT` | Foam will fill it with selected text when creating a new note, if any text is selected. Selected text will be replaced with a wikilink to the new note.                                                                     |
 | `FOAM_TITLE`         | The title of the note. If used, Foam will prompt you to enter a title for the note.                                                                                                                                         |
+| `FOAM_SLUG`          | The sluggified title of the note (using the default github slug method). If used, Foam will prompt you to enter a title for the note unless `FOAM_TITLE` has already caused the prompt.                                     |
 | `FOAM_DATE_*`        | `FOAM_DATE_YEAR`, `FOAM_DATE_MONTH`, etc. Foam-specific versions of [VS Code's datetime snippet variables](https://code.visualstudio.com/docs/editor/userdefinedsnippets#_variables). Prefer these versions over VS Code's. |
 
-**Note:** neither the defaulting feature (eg. `${variable:default}`) nor the format feature (eg. `${variable/(.*)/${1:/upcase}/}`) (available to other variables) are available for these Foam-provided variables. See [#693](https://github.com/foambubble/foam/issues/693).
-
 ### `FOAM_DATE_*` variables
 
 Foam defines its own set of datetime variables that have a similar behaviour as [VS Code's datetime snippet variables](https://code.visualstudio.com/docs/editor/userdefinedsnippets#_variables).

docs/index.md

@@ -218,6 +218,15 @@ If that sounds like something you're interested in, I'd love to have you along o
   </tr>
   <tr>
     <td align="center"><a href="https://github.com/AndreiD049"><img src="https://avatars.githubusercontent.com/u/52671223?v=4?s=60" width="60px;" alt=""/><br /><sub><b>AndreiD049</b></sub></a><br /><a href="https://github.com/foambubble/foam/commits?author=AndreiD049" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/iam-yan"><img src="https://avatars.githubusercontent.com/u/48427014?v=4?s=60" width="60px;" alt=""/><br /><sub><b>Yan</b></sub></a><br /><a href="https://github.com/foambubble/foam/commits?author=iam-yan" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://WikiEducator.org/User:JimTittsler"><img src="https://avatars.githubusercontent.com/u/180326?v=4?s=60" width="60px;" alt=""/><br /><sub><b>Jim Tittsler</b></sub></a><br /><a href="https://github.com/foambubble/foam/commits?author=jimt" title="Documentation">📖</a></td>
+    <td align="center"><a href="http://malcolmmielle.wordpress.com/"><img src="https://avatars.githubusercontent.com/u/4457840?v=4?s=60" width="60px;" alt=""/><br /><sub><b>Malcolm Mielle</b></sub></a><br /><a href="https://github.com/foambubble/foam/commits?author=MalcolmMielle" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://snippets.page/"><img src="https://avatars.githubusercontent.com/u/74916913?v=4?s=60" width="60px;" alt=""/><br /><sub><b>Veesar</b></sub></a><br /><a href="https://github.com/foambubble/foam/commits?author=veesar" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/bentongxyz"><img src="https://avatars.githubusercontent.com/u/60358804?v=4?s=60" width="60px;" alt=""/><br /><sub><b>bentongxyz</b></sub></a><br /><a href="https://github.com/foambubble/foam/commits?author=bentongxyz" title="Code">💻</a></td>
+    <td align="center"><a href="https://brianjdevries.com"><img src="https://avatars.githubusercontent.com/u/42778030?v=4?s=60" width="60px;" alt=""/><br /><sub><b>Brian DeVries</b></sub></a><br /><a href="https://github.com/foambubble/foam/commits?author=techCarpenter" title="Code">💻</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="http://Cliffordfajardo.com"><img src="https://avatars.githubusercontent.com/u/6743796?v=4?s=60" width="60px;" alt=""/><br /><sub><b>Clifford Fajardo </b></sub></a><br /><a href="#tool-cliffordfajardo" title="Tools">🔧</a></td>
   </tr>
 </table>
 

docs/proposals/wikilinks-in-foam.md

@@ -6,7 +6,7 @@ Wikilinks can refer to any note or attachment in the repo: `[[note.md]]`, `[[doc
 
 The usual wikilink syntax without extension refers to notes: `[[wikilink]]` and `[[wikilink.md]]` are equivalent.
 
-The goal of wikilinks is to uniquily identify a file in a repo, no matter in which directory it lives.
+The goal of wikilinks is to uniquely identify a file in a repo, no matter in which directory it lives.
 
 Sometimes in a repo you can have files with the same name in different directories.
 Foam allows you to identify those files using the minimum effort needed to disambiguate them.
@@ -67,10 +67,6 @@ Basically we could say as a rule:
 
 ## Compatibility with other apps
 
-Foam's identifiers are a super set of Obsidian's: all Obsidian links are supported by Foam, but Foam multi-part identifier (scenario 6) is only supported by Foam.
-
-To improve compatibility this option should either be behind a configuration key, or it should be easily updated e.g. via the janitor.
-
 | Scenario                    | Obsidian                        | Foam                            |
 | --------------------------- | ------------------------------- | ------------------------------- |
 | 1 `[[notes]]`               | ✔ unique identifier in repo     | ✔ unique identifier in repo     |
@@ -78,7 +74,7 @@ To improve compatibility this option should either be behind a configuration key
 | 3 `[[work/notes]]`          | ✔ valid path from repo root     | ✔ valid identifier in repo      |
 | 4 `[[project/house/todo]]`  | ✔ valid path from repo root     | ✔ valid unique identifier       |
 | 5 `[[/project/house/todo]]` | ✔ valid path from repo root     | ✔ valid path from repo root     |
-| 6 `[[house/todo]]`          | ✘ incorrect path from repo root | ✔ valid unique identifier       |
+| 6 `[[house/todo]]`          | ✔ valid unique identifier       | ✔ valid unique identifier       |
 | 7 `[[todo]]`                | ✘ ambiguous identifier          | ✘ ambiguous identifier          |
 | 8 `[[/house/todo]]`         | ✘ incorrect path from repo root | ✘ incorrect path from repo root |
 

docs/publishing/publish-to-github-pages.md

@@ -1,10 +1,10 @@
 # GitHub Pages
 
-- In VSCode workspace settings set `"foam.edit.linkReferenceDefinitions": "withoutExtensions"`
-- Execute the “Foam: Run Janitor” command from the command palette.
-- [Turn **GitHub Pages** on in your repository settings](https://guides.github.com/features/pages/).
-- The default GitHub Pages template is called [Primer](https://github.com/pages-themes/primer). See Primer docs for how to customise html layouts and templates.
-- GitHub Pages is built on [Jekyll](https://jekyllrb.com/), so it supports things like permalinks, front matter metadata etc.
+1. In VSCode workspace settings set `"foam.edit.linkReferenceDefinitions": "withoutExtensions"`
+2. Execute the “Foam: Run Janitor” command from the command palette.
+3. [Turn **GitHub Pages** on in your repository settings](https://guides.github.com/features/pages/).
+   - The default GitHub Pages template is called [Primer](https://github.com/pages-themes/primer). See Primer docs for how to customise html layouts and templates.
+   - GitHub Pages is built on [Jekyll](https://jekyllrb.com/), so it supports things like permalinks, front matter metadata etc.
 
 ## How to publish locally
 

docs/publishing/publish-to-gitlab-pages.md

@@ -2,13 +2,175 @@
 
 You don't have to use GitHub to serve Foam pages. You can also use GitLab.
 
+Gitlab pages can be kept private for private repo, so that your notes are still private.
+
 ## Setup a project
 
 ### Generate the directory from GitHub
 
-Generate a solution using the [Foam template].
+Generate a solution using the [Foam template](https://github.com/foambubble/foam-template).
 
-Change the remote to GitLab, or copy all the files into a new GitLab repo.
+Change the remote to GitLab, or copy all the files into a new GitLab repo
+
+## Publishing pages with Gatsby
+
+### Setup the Gatsby config
+
+Add a .gatsby-config.js file where:
+
+* `$REPO_NAME` correspond to the name of your gtlab repo.
+* `$USER_NAME` correspond to your gitlab username.
+
+```js
+const path = require("path");
+const pathPrefix = `/$REPO_NAME`;
+
+// Change me
+const siteMetadata = {
+  title: "A title",
+  shortName: "A short name",
+  description: "",
+  imageUrl: "/graph-visualisation.jpg",
+  siteUrl: "https://$USER_NAME.gitlab.io",
+};
+module.exports = {
+  siteMetadata,
+  pathPrefix,
+  flags: {
+    DEV_SSR: true,
+  },
+  plugins: [
+    `gatsby-plugin-sharp`,
+    {
+      resolve: "gatsby-theme-primer-wiki",
+      options: {
+        defaultColorMode: "night",
+        icon: "./path_to/logo.png",
+        sidebarComponents: ["tag", "category"],
+        nav: [
+          {
+            title: "Github",
+            url: "https://github.com/$USER_NAME/",
+          },
+          {
+            title: "Gitlab",
+            url: "https://gitlab.com/$USER_NAME/",
+          },
+        ],
+        editUrl:
+          "https://gitlab.com/$USER_NAME/$REPO_NAME/tree/main/",
+      },
+    },
+    {
+      resolve: "gatsby-source-filesystem",
+      options: {
+        name: "content",
+        path: `${__dirname}`,
+        ignore: [`**/\.*/**/*`],
+      },
+    },
+
+    {
+      resolve: "gatsby-plugin-manifest",
+      options: {
+        name: siteMetadata.title,
+        short_name: siteMetadata.shortName,
+        start_url: pathPrefix,
+        background_color: `#f7f0eb`,
+        display: `standalone`,
+        icon: path.resolve(__dirname, "./path_to/logo.png"),
+      },
+    },
+    {
+      resolve: `gatsby-plugin-sitemap`,
+    },
+    {
+      resolve: "gatsby-plugin-robots-txt",
+      options: {
+        host: siteMetadata.siteUrl,
+        sitemap: `${siteMetadata.siteUrl}/sitemap/sitemap-index.xml`,
+        policy: [{ userAgent: "*", allow: "/" }],
+      },
+    },
+  ],
+};
+```
+
+And a `package.json` file containing:
+
+```json
+{
+    "private": true,
+    "name": "wiki",
+    "version": "1.0.0",
+    "license": "MIT",
+    "scripts": {
+        "develop": "gatsby develop -H 0.0.0.0",
+        "start": "gatsby develop -H 0.0.0.0",
+        "build": "gatsby build",
+        "clean": "gatsby clean",
+        "serve": "gatsby serve",
+        "test": "echo test"
+    },
+    "dependencies": {
+        "@primer/react": "^34.1.0",
+        "@primer/css": "^17.5.0",
+        "foam-cli": "^0.11.0",
+        "gatsby": "^3.12.0",
+        "gatsby-plugin-manifest": "^3.12.0",
+        "gatsby-plugin-robots-txt": "^1.6.9",
+        "gatsby-plugin-sitemap": "^5.4.0",
+        "gatsby-source-filesystem": "^3.12.0",
+        "gatsby-theme-primer-wiki": "^1.14.5",
+        "react": "^17.0.2",
+        "react-dom": "^17.0.2"
+    }
+}
+```
+
+The theme will be based on [gatsby-theme-primer-wiki](https://github.com/theowenyoung/gatsby-theme-primer-wiki).
+
+To test the theme locally first run `yarn install` and then use `gatsby develop` to serve the website.
+See gatsby documentation for more details.
+
+### Set-up the CI for deployment
+
+Create a `.gitlab-ci.yml` file containing:
+
+```yml
+# To contribute improvements to CI/CD templates, please follow the Development guide at:
+# https://docs.gitlab.com/ee/development/cicd/templates.html
+# This specific template is located at:
+# https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Pages/Gatsby.gitlab-ci.yml
+
+image: node:latest
+
+stages:
+  - deploy
+
+pages:
+  stage: deploy
+  # This folder is cached between builds
+  # https://docs.gitlab.com/ee/ci/yaml/index.html#cache
+  cache:
+    paths:
+      - node_modules/
+      # Enables git-lab CI caching. Both .cache and public must be cached, otherwise builds will fail.
+      - .cache/
+      - public/
+  script:
+    - yarn install
+    - ./node_modules/.bin/gatsby build --prefix-paths
+  artifacts:
+    paths:
+      - public
+  rules:
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+```
+
+This pipeline will now serve your website on every push to the main branch of your project.
+
+## Publish with Jekyll
 
 ### Add a _config.yaml
 
@@ -47,14 +209,14 @@ gem "jekyll-optional-front-matter"
 
 Commit the file and push it to gitlab.
 
-## Setup CI/CD
+### Setup CI/CD
 
 1. From the project home in GitLab click `Set up CI/CD`
 2. Choose `Jekyll` as your template from the template dropdown
 3. Click `commit`
 4. Now when you go to CI / CD > Pipelines, you should see the code running
 
-## Troubleshooting
+### Troubleshooting
 
 - *Could not locate Gemfile* - You didn't follow the steps above to [#Add a Gemlock file]
 - *Conversion error: Jekyll::Converters::Scss encountered an error while converting* You need to reference a theme.

docs/recipes/diagrams-in-markdown.md

@@ -11,8 +11,6 @@ We have two alternative #recipe for displaying diagrams in markdown:
 
 You can use [Mermaid](https://marketplace.visualstudio.com/items?itemName=bierner.markdown-mermaid) plugin to draw and preview diagrams in your content.
 
-⚠️ Be aware that Mermaid diagrams don't automatically get rendered in published Foams in [[publish-to-github-pages]], and would require you to eject to another static site generation approach that supports Mermaid plugins.
-
 ## Draw.io
 
 [Draw.io](https://marketplace.visualstudio.com/items?itemName=hediet.vscode-drawio) extension allows you to create, edit, and display your diagrams without leaving Visual Studio Code. The `.drawio.svg` or `.drawio.png` files can be automatically embedded and displayed in published Foams, no export needed. FYI, the diagram below was made using Draw.io! You can check the diagram [here](../assets/images/diagram-drawio-demo.drawio.svg).

docs/recipes/web-clipper.md

@@ -9,3 +9,6 @@ There are a couple of options when it comes to clipping web pages:
 
 - [Markdown Clipper](https://github.com/deathau/markdownload)
   - A Firefox and Google Chrome extension to clip websites and download them into a readable markdown file.
+
+- [Web Clipper](https://clipper.website/)
+  - A Firefox, Chrome and Edge extension to clip websites and save them directly to the GitHub repository into a readable markdown file.

docs/wikilinks.md

@@ -10,6 +10,10 @@ Foam enables you to Link pages together using `[[file-name]]` annotations (i.e.
 
 > If the `F12` shortcut feels unnatural you can rebind it at File > Preferences > Keyboard Shortcuts by searching for `editor.action.revealDefinition`.
 
+## Support for sections
+
+Foam supports autocompletion, navigation, embedding and diagnostics for note sections. Just use the standard wiki syntax of `[[resource#Section Title]]`.
+
 ## Markdown compatibility
 
 The [Foam for VSCode](https://marketplace.visualstudio.com/items?itemName=foam.foam-vscode) extension automatically generates [[link-reference-definitions]] at the bottom of the file to make wikilinks compatible with Markdown tools and parsers.

lerna.json

@@ -4,5 +4,5 @@
   ],
   "npmClient": "yarn",
   "useWorkspaces": true,
-  "version": "0.16.1"
+  "version": "0.17.7"
 }

packages/foam-vscode/CHANGELOG.md

@@ -4,6 +4,65 @@ All notable changes to the "foam-vscode" extension will be documented in this fi
 
 Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how to structure this file.
 
+## [0.17.7] - 2022-03-29
+
+Fixes and Improvements:
+- Include links with sections in backlinks (#895)
+- Improved navigation when document editor is already open
+
+## [0.17.6] - 2022-03-03
+
+Fixes and Improvements:
+- Don't fail on error when scannig workspace (#943 - thanks @develmusa)
+
+## [0.17.5] - 2022-02-22
+
+Fixes and Improvements:
+- Added FOAM_SLUG template variable (#865 - Thanks @techCarpenter)
+
+## [0.17.4] - 2022-02-13
+
+Fixes and Improvements:
+- Improvements to Foam variables in templates (#882 - thanks @movermeyer)
+  - Foam variables can now be used just any other VS Code variables, including in combination with placeholders and transformers
+
+## [0.17.3] - 2022-01-14
+
+Fixes and Improvements:
+- Fixed autocompletion with tags (#885 - thanks @memeplex)
+- Improved "Open Daily Note" to be usabled in tasks (#897 - thanks @MCluck90)
+
+## [0.17.2] - 2021-12-22
+
+Fixes and Improvements:
+- Improved support for wikilinks in titles (#878)
+- Use syntax injection for wikilinks (#876 - thanks @memeplex)
+- Fix when applying text edits in last line 
+
+Internal:
+- DX: Clean up of testing setup (#881 - thanks @memeplex)
+
+## [0.17.1] - 2021-12-16
+
+Fixes and Improvements:
+- Decorate markdown files only (#857)
+- Fix template placeholders issue (#859)
+- Improved replacement range for link completion
+
+Internal:
+- Major URI/path handling refactoring (#858 - thanks @memeplex)
+
+## [0.17.0] - 2021-12-08
+
+Features:
+
+- Added first class support for sections (#856)
+  - Sections can be referred to in wikilinks
+  - Sections can be embedded
+  - Autocompletion for sections
+  - Diagnostic for sections
+  - Embed sections
+
 ## [0.16.1] - 2021-11-30
 
 Fixes and Improvements:

packages/foam-vscode/README.md

@@ -58,6 +58,11 @@ Embed the content from other notes.
 
 ![Note Embed](./assets/screenshots/feature-note-embed.gif)
 
+### Support for sections
+
+Foam supports autocompletion, navigation, embedding and diagnostics for note sections.
+Just use the standard wiki syntax of `[[resource#Section Title]]`.
+
 ### Link Alias
 
 Foam supports link aliasing, so you can have a `[[wikilink]]`, or a `[[wikilink|alias]]`.

packages/foam-vscode/babel.config.js

@@ -1,7 +0,0 @@
-module.exports = {
-  presets: [
-    ["@babel/preset-env", { targets: { node: "current" } }],
-    "@babel/preset-typescript"
-  ],
-  plugins: [["@babel/plugin-transform-runtime", { helpers: false }]]
-};

packages/foam-vscode/jest.config.js

@@ -82,7 +82,7 @@ module.exports = {
   // moduleNameMapper: {},
 
   // An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
-  // modulePathIgnorePatterns: [],
+  modulePathIgnorePatterns: ['.vscode-test'],
 
   // Activates notifications for test results
   // notify: false,
@@ -91,7 +91,7 @@ module.exports = {
   // notifyMode: "failure-change",
 
   // A preset that is used as a base for Jest's configuration
-  // preset: undefined,
+  preset: 'ts-jest',
 
   // Run tests from one or more projects
   // projects: undefined,
@@ -126,13 +126,13 @@ module.exports = {
   // setupFiles: [],
 
   // A list of paths to modules that run some code to configure or set up the testing framework before each test
-  // setupFilesAfterEnv: [],
+  setupFilesAfterEnv: ['jest-extended'],
 
   // A list of paths to snapshot serializer modules Jest should use for snapshot testing
   // snapshotSerializers: [],
 
   // The test environment that will be used for testing
-  testEnvironment: "node"
+  testEnvironment: 'node',
 
   // Options that will be passed to the testEnvironment
   // testEnvironmentOptions: {},
@@ -152,7 +152,10 @@ module.exports = {
   // ],
 
   // The regexp pattern or array of patterns that Jest uses to detect test files
-  // testRegex: [],
+  // This is overridden in every runCLI invocation but it's here as the default
+  // for vscode-jest. We only want unit tests in the test explorer (sidebar),
+  // since spec tests require the entire extension host to be launched before.
+  testRegex: ['\\.test\\.ts$'],
 
   // This option allows the use of a custom results processor
   // testResultsProcessor: undefined,

packages/foam-vscode/package.json

@@ -8,7 +8,7 @@
     "type": "git"
   },
   "homepage": "https://github.com/foambubble/foam",
-  "version": "0.16.1",
+  "version": "0.17.7",
   "license": "MIT",
   "publisher": "foam",
   "engines": {
@@ -37,6 +37,26 @@
     "markdown.previewStyles": [
       "./static/preview/style.css"
     ],
+    "grammars": [
+      {
+        "path": "./syntaxes/injection.json",
+        "scopeName": "foam.wikilink.injection",
+        "injectTo": [
+          "text.html.markdown"
+        ]
+      }
+    ],
+    "colors": [
+      {
+        "id": "foam.placeholder",
+        "description": "Color of foam placeholders.",
+        "defaults": {
+          "dark": "editorWarning.foreground",
+          "light": "editorWarning.foreground",
+          "highContrast": "editorWarning.foreground"
+        }
+      }
+    ],
     "views": {
       "explorer": [
         {
@@ -356,7 +376,9 @@
     "build": "tsc -p ./",
     "pretest": "yarn build",
     "test": "node ./out/test/run-tests.js",
+    "pretest:unit": "yarn build",
     "test:unit": "node ./out/test/run-tests.js --unit",
+    "pretest:e2e": "yarn build",
     "test:e2e": "node ./out/test/run-tests.js --e2e",
     "lint": "tsdx lint src",
     "clean": "rimraf out",
@@ -372,12 +394,7 @@
     "publish-extension": "yarn publish-extension-vscode && yarn publish-extension-openvsx && yarn npm-cleanup"
   },
   "devDependencies": {
-    "@babel/core": "^7.11.0",
-    "@babel/plugin-transform-runtime": "^7.10.4",
-    "@babel/preset-env": "^7.11.0",
-    "@babel/preset-typescript": "^7.10.4",
     "@types/dateformat": "^3.0.1",
-    "@types/github-slugger": "^1.3.0",
     "@types/glob": "^7.1.1",
     "@types/lodash": "^4.14.157",
     "@types/markdown-it": "^12.0.1",
@@ -388,12 +405,12 @@
     "@types/vscode": "^1.47.1",
     "@typescript-eslint/eslint-plugin": "^2.30.0",
     "@typescript-eslint/parser": "^2.30.0",
-    "babel-jest": "^26.2.2",
     "eslint": "^6.8.0",
+    "eslint-import-resolver-typescript": "^2.5.0",
     "eslint-plugin-import": "^2.24.2",
+    "eslint-plugin-jest": "^25.3.0",
     "husky": "^4.2.5",
     "jest": "^26.2.2",
-    "jest-environment-vscode": "^1.0.0",
     "jest-extended": "^0.11.5",
     "markdown-it": "^12.0.4",
     "rimraf": "^3.0.2",
@@ -407,7 +424,7 @@
     "dateformat": "^3.0.3",
     "detect-newline": "^3.1.0",
     "fast-array-diff": "^1.0.1",
-    "github-slugger": "^1.3.0",
+    "github-slugger": "^1.4.0",
     "glob": "^7.1.6",
     "gray-matter": "^4.0.2",
     "lodash": "^4.17.21",

packages/foam-vscode/src/core/common/snippetParser.test.ts

@@ -0,0 +1,811 @@
+/*---------------------------------------------------------------------------------------------
+ *  Originally taken from https://github.com/microsoft/vscode/blob/d31496c866683bdbccfc85bc11a3107d6c789b52/src/vs/editor/contrib/snippet/test/snippetParser.test.ts
+ *  Here was the license:
+ *
+ *  MIT License
+ *
+ *	Copyright (c) 2015 - present Microsoft Corporation
+ *
+ *	Permission is hereby granted, free of charge, to any person obtaining a copy
+ *	of this software and associated documentation files (the "Software"), to deal
+ *	in the Software without restriction, including without limitation the rights
+ *	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *	copies of the Software, and to permit persons to whom the Software is
+ *	furnished to do so, subject to the following conditions:
+ *
+ *	The above copyright notice and this permission notice shall be included in all
+ *	copies or substantial portions of the Software.
+ *
+ *	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *	SOFTWARE.
+ *
+ *--------------------------------------------------------------------------------------------*/
+
+import * as assert from 'assert';
+import { Choice, FormatString, Marker, Placeholder, Scanner, SnippetParser, Text, TextmateSnippet, TokenType, Transform, Variable } from './snippetParser';
+
+describe('SnippetParser', () => {
+
+	test('Scanner', () => {
+
+		const scanner = new Scanner();
+		assert.strictEqual(scanner.next().type, TokenType.EOF);
+
+		scanner.text('abc');
+		assert.strictEqual(scanner.next().type, TokenType.VariableName);
+		assert.strictEqual(scanner.next().type, TokenType.EOF);
+
+		scanner.text('{{abc}}');
+		assert.strictEqual(scanner.next().type, TokenType.CurlyOpen);
+		assert.strictEqual(scanner.next().type, TokenType.CurlyOpen);
+		assert.strictEqual(scanner.next().type, TokenType.VariableName);
+		assert.strictEqual(scanner.next().type, TokenType.CurlyClose);
+		assert.strictEqual(scanner.next().type, TokenType.CurlyClose);
+		assert.strictEqual(scanner.next().type, TokenType.EOF);
+
+		scanner.text('abc() ');
+		assert.strictEqual(scanner.next().type, TokenType.VariableName);
+		assert.strictEqual(scanner.next().type, TokenType.Format);
+		assert.strictEqual(scanner.next().type, TokenType.EOF);
+
+		scanner.text('abc 123');
+		assert.strictEqual(scanner.next().type, TokenType.VariableName);
+		assert.strictEqual(scanner.next().type, TokenType.Format);
+		assert.strictEqual(scanner.next().type, TokenType.Int);
+		assert.strictEqual(scanner.next().type, TokenType.EOF);
+
+		scanner.text('$foo');
+		assert.strictEqual(scanner.next().type, TokenType.Dollar);
+		assert.strictEqual(scanner.next().type, TokenType.VariableName);
+		assert.strictEqual(scanner.next().type, TokenType.EOF);
+
+		scanner.text('$foo_bar');
+		assert.strictEqual(scanner.next().type, TokenType.Dollar);
+		assert.strictEqual(scanner.next().type, TokenType.VariableName);
+		assert.strictEqual(scanner.next().type, TokenType.EOF);
+
+		scanner.text('$foo-bar');
+		assert.strictEqual(scanner.next().type, TokenType.Dollar);
+		assert.strictEqual(scanner.next().type, TokenType.VariableName);
+		assert.strictEqual(scanner.next().type, TokenType.Dash);
+		assert.strictEqual(scanner.next().type, TokenType.VariableName);
+		assert.strictEqual(scanner.next().type, TokenType.EOF);
+
+		scanner.text('${foo}');
+		assert.strictEqual(scanner.next().type, TokenType.Dollar);
+		assert.strictEqual(scanner.next().type, TokenType.CurlyOpen);
+		assert.strictEqual(scanner.next().type, TokenType.VariableName);
+		assert.strictEqual(scanner.next().type, TokenType.CurlyClose);
+		assert.strictEqual(scanner.next().type, TokenType.EOF);
+
+		scanner.text('${1223:foo}');
+		assert.strictEqual(scanner.next().type, TokenType.Dollar);
+		assert.strictEqual(scanner.next().type, TokenType.CurlyOpen);
+		assert.strictEqual(scanner.next().type, TokenType.Int);
+		assert.strictEqual(scanner.next().type, TokenType.Colon);
+		assert.strictEqual(scanner.next().type, TokenType.VariableName);
+		assert.strictEqual(scanner.next().type, TokenType.CurlyClose);
+		assert.strictEqual(scanner.next().type, TokenType.EOF);
+
+		scanner.text('\\${}');
+		assert.strictEqual(scanner.next().type, TokenType.Backslash);
+		assert.strictEqual(scanner.next().type, TokenType.Dollar);
+		assert.strictEqual(scanner.next().type, TokenType.CurlyOpen);
+		assert.strictEqual(scanner.next().type, TokenType.CurlyClose);
+
+		scanner.text('${foo/regex/format/option}');
+		assert.strictEqual(scanner.next().type, TokenType.Dollar);
+		assert.strictEqual(scanner.next().type, TokenType.CurlyOpen);
+		assert.strictEqual(scanner.next().type, TokenType.VariableName);
+		assert.strictEqual(scanner.next().type, TokenType.Forwardslash);
+		assert.strictEqual(scanner.next().type, TokenType.VariableName);
+		assert.strictEqual(scanner.next().type, TokenType.Forwardslash);
+		assert.strictEqual(scanner.next().type, TokenType.VariableName);
+		assert.strictEqual(scanner.next().type, TokenType.Forwardslash);
+		assert.strictEqual(scanner.next().type, TokenType.VariableName);
+		assert.strictEqual(scanner.next().type, TokenType.CurlyClose);
+		assert.strictEqual(scanner.next().type, TokenType.EOF);
+	});
+
+	function assertText(value: string, expected: string) {
+		const p = new SnippetParser();
+		const actual = p.text(value);
+		assert.strictEqual(actual, expected);
+	}
+
+	function assertMarker(input: TextmateSnippet | Marker[] | string, ...ctors: Function[]) {
+		let marker: Marker[];
+		if (input instanceof TextmateSnippet) {
+			marker = input.children;
+		} else if (typeof input === 'string') {
+			const p = new SnippetParser();
+			marker = p.parse(input).children;
+		} else {
+			marker = input;
+		}
+		while (marker.length > 0) {
+			let m = marker.pop();
+			let ctor = ctors.pop()!;
+			assert.ok(m instanceof ctor);
+		}
+		assert.strictEqual(marker.length, ctors.length);
+		assert.strictEqual(marker.length, 0);
+	}
+
+	function assertTextAndMarker(value: string, escaped: string, ...ctors: Function[]) {
+		assertText(value, escaped);
+		assertMarker(value, ...ctors);
+	}
+
+	function assertEscaped(value: string, expected: string) {
+		const actual = SnippetParser.escape(value);
+		assert.strictEqual(actual, expected);
+	}
+
+	test('Parser, escaped', function () {
+		assertEscaped('foo$0', 'foo\\$0');
+		assertEscaped('foo\\$0', 'foo\\\\\\$0');
+		assertEscaped('f$1oo$0', 'f\\$1oo\\$0');
+		assertEscaped('${1:foo}$0', '\\${1:foo\\}\\$0');
+		assertEscaped('$', '\\$');
+	});
+
+	test('Parser, text', () => {
+		assertText('$', '$');
+		assertText('\\\\$', '\\$');
+		assertText('{', '{');
+		assertText('\\}', '}');
+		assertText('\\abc', '\\abc');
+		assertText('foo${f:\\}}bar', 'foo}bar');
+		assertText('\\{', '\\{');
+		assertText('I need \\\\\\$', 'I need \\$');
+		assertText('\\', '\\');
+		assertText('\\{{', '\\{{');
+		assertText('{{', '{{');
+		assertText('{{dd', '{{dd');
+		assertText('}}', '}}');
+		assertText('ff}}', 'ff}}');
+
+		assertText('farboo', 'farboo');
+		assertText('far{{}}boo', 'far{{}}boo');
+		assertText('far{{123}}boo', 'far{{123}}boo');
+		assertText('far\\{{123}}boo', 'far\\{{123}}boo');
+		assertText('far{{id:bern}}boo', 'far{{id:bern}}boo');
+		assertText('far{{id:bern {{basel}}}}boo', 'far{{id:bern {{basel}}}}boo');
+		assertText('far{{id:bern {{id:basel}}}}boo', 'far{{id:bern {{id:basel}}}}boo');
+		assertText('far{{id:bern {{id2:basel}}}}boo', 'far{{id:bern {{id2:basel}}}}boo');
+	});
+
+
+	test('Parser, TM text', () => {
+		assertTextAndMarker('foo${1:bar}}', 'foobar}', Text, Placeholder, Text);
+		assertTextAndMarker('foo${1:bar}${2:foo}}', 'foobarfoo}', Text, Placeholder, Placeholder, Text);
+
+		assertTextAndMarker('foo${1:bar\\}${2:foo}}', 'foobar}foo', Text, Placeholder);
+
+		let [, placeholder] = new SnippetParser().parse('foo${1:bar\\}${2:foo}}').children;
+		let { children } = (<Placeholder>placeholder);
+
+		assert.strictEqual((<Placeholder>placeholder).index, 1);
+		assert.ok(children[0] instanceof Text);
+		assert.strictEqual(children[0].toString(), 'bar}');
+		assert.ok(children[1] instanceof Placeholder);
+		assert.strictEqual(children[1].toString(), 'foo');
+	});
+
+	test('Parser, placeholder', () => {
+		assertTextAndMarker('farboo', 'farboo', Text);
+		assertTextAndMarker('far{{}}boo', 'far{{}}boo', Text);
+		assertTextAndMarker('far{{123}}boo', 'far{{123}}boo', Text);
+		assertTextAndMarker('far\\{{123}}boo', 'far\\{{123}}boo', Text);
+	});
+
+	test('Parser, literal code', () => {
+		assertTextAndMarker('far`123`boo', 'far`123`boo', Text);
+		assertTextAndMarker('far\\`123\\`boo', 'far\\`123\\`boo', Text);
+	});
+
+	test('Parser, variables/tabstop', () => {
+		assertTextAndMarker('$far-boo', '-boo', Variable, Text);
+		assertTextAndMarker('\\$far-boo', '$far-boo', Text);
+		assertTextAndMarker('far$farboo', 'far', Text, Variable);
+		assertTextAndMarker('far${farboo}', 'far', Text, Variable);
+		assertTextAndMarker('$123', '', Placeholder);
+		assertTextAndMarker('$farboo', '', Variable);
+		assertTextAndMarker('$far12boo', '', Variable);
+		assertTextAndMarker('000_${far}_000', '000__000', Text, Variable, Text);
+		assertTextAndMarker('FFF_${TM_SELECTED_TEXT}_FFF$0', 'FFF__FFF', Text, Variable, Text, Placeholder);
+	});
+
+	test('Parser, variables/placeholder with defaults', () => {
+		assertTextAndMarker('${name:value}', 'value', Variable);
+		assertTextAndMarker('${1:value}', 'value', Placeholder);
+		assertTextAndMarker('${1:bar${2:foo}bar}', 'barfoobar', Placeholder);
+
+		assertTextAndMarker('${name:value', '${name:value', Text);
+		assertTextAndMarker('${1:bar${2:foobar}', '${1:barfoobar', Text, Placeholder);
+	});
+
+	test('Parser, variable transforms', function () {
+		assertTextAndMarker('${foo///}', '', Variable);
+		assertTextAndMarker('${foo/regex/format/gmi}', '', Variable);
+		assertTextAndMarker('${foo/([A-Z][a-z])/format/}', '', Variable);
+
+		// invalid regex
+		assertTextAndMarker('${foo/([A-Z][a-z])/format/GMI}', '${foo/([A-Z][a-z])/format/GMI}', Text);
+		assertTextAndMarker('${foo/([A-Z][a-z])/format/funky}', '${foo/([A-Z][a-z])/format/funky}', Text);
+		assertTextAndMarker('${foo/([A-Z][a-z]/format/}', '${foo/([A-Z][a-z]/format/}', Text);
+
+		// tricky regex
+		assertTextAndMarker('${foo/m\\/atch/$1/i}', '', Variable);
+		assertMarker('${foo/regex\/format/options}', Text);
+
+		// incomplete
+		assertTextAndMarker('${foo///', '${foo///', Text);
+		assertTextAndMarker('${foo/regex/format/options', '${foo/regex/format/options', Text);
+
+		// format string
+		assertMarker('${foo/.*/${0:fooo}/i}', Variable);
+		assertMarker('${foo/.*/${1}/i}', Variable);
+		assertMarker('${foo/.*/$1/i}', Variable);
+		assertMarker('${foo/.*/This-$1-encloses/i}', Variable);
+		assertMarker('${foo/.*/complex${1:else}/i}', Variable);
+		assertMarker('${foo/.*/complex${1:-else}/i}', Variable);
+		assertMarker('${foo/.*/complex${1:+if}/i}', Variable);
+		assertMarker('${foo/.*/complex${1:?if:else}/i}', Variable);
+		assertMarker('${foo/.*/complex${1:/upcase}/i}', Variable);
+
+	});
+
+	test('Parser, placeholder transforms', function () {
+		assertTextAndMarker('${1///}', '', Placeholder);
+		assertTextAndMarker('${1/regex/format/gmi}', '', Placeholder);
+		assertTextAndMarker('${1/([A-Z][a-z])/format/}', '', Placeholder);
+
+		// tricky regex
+		assertTextAndMarker('${1/m\\/atch/$1/i}', '', Placeholder);
+		assertMarker('${1/regex\/format/options}', Text);
+
+		// incomplete
+		assertTextAndMarker('${1///', '${1///', Text);
+		assertTextAndMarker('${1/regex/format/options', '${1/regex/format/options', Text);
+	});
+
+	test('No way to escape forward slash in snippet regex #36715', function () {
+		assertMarker('${TM_DIRECTORY/src\\//$1/}', Variable);
+	});
+
+	test('No way to escape forward slash in snippet format section #37562', function () {
+		assertMarker('${TM_SELECTED_TEXT/a/\\/$1/g}', Variable);
+		assertMarker('${TM_SELECTED_TEXT/a/in\\/$1ner/g}', Variable);
+		assertMarker('${TM_SELECTED_TEXT/a/end\\//g}', Variable);
+	});
+
+	test('Parser, placeholder with choice', () => {
+
+		assertTextAndMarker('${1|one,two,three|}', 'one', Placeholder);
+		assertTextAndMarker('${1|one|}', 'one', Placeholder);
+		assertTextAndMarker('${1|one1,two2|}', 'one1', Placeholder);
+		assertTextAndMarker('${1|one1\\,two2|}', 'one1,two2', Placeholder);
+		assertTextAndMarker('${1|one1\\|two2|}', 'one1|two2', Placeholder);
+		assertTextAndMarker('${1|one1\\atwo2|}', 'one1\\atwo2', Placeholder);
+		assertTextAndMarker('${1|one,two,three,|}', '${1|one,two,three,|}', Text);
+		assertTextAndMarker('${1|one,', '${1|one,', Text);
+
+		const p = new SnippetParser();
+		const snippet = p.parse('${1|one,two,three|}');
+		assertMarker(snippet, Placeholder);
+		const expected = [Placeholder, Text, Text, Text];
+		snippet.walk(marker => {
+			assert.strictEqual(marker, expected.shift());
+			return true;
+		});
+	});
+
+	test('Snippet choices: unable to escape comma and pipe, #31521', function () {
+		assertTextAndMarker('console.log(${1|not\\, not, five, 5, 1   23|});', 'console.log(not, not);', Text, Placeholder, Text);
+	});
+
+	test('Marker, toTextmateString()', function () {
+
+		function assertTextsnippetString(input: string, expected: string): void {
+			const snippet = new SnippetParser().parse(input);
+			const actual = snippet.toTextmateString();
+			assert.strictEqual(actual, expected);
+		}
+
+		assertTextsnippetString('$1', '$1');
+		assertTextsnippetString('\\$1', '\\$1');
+		assertTextsnippetString('console.log(${1|not\\, not, five, 5, 1   23|});', 'console.log(${1|not\\, not, five, 5, 1   23|});');
+		assertTextsnippetString('console.log(${1|not\\, not, \\| five, 5, 1   23|});', 'console.log(${1|not\\, not, \\| five, 5, 1   23|});');
+		assertTextsnippetString('this is text', 'this is text');
+		assertTextsnippetString('this ${1:is ${2:nested with $var}}', 'this ${1:is ${2:nested with ${var}}}');
+		assertTextsnippetString('this ${1:is ${2:nested with $var}}}', 'this ${1:is ${2:nested with ${var}}}\\}');
+	});
+
+	test('Marker, toTextmateString() <-> identity', function () {
+
+		function assertIdent(input: string): void {
+			// full loop: (1) parse input, (2) generate textmate string, (3) parse, (4) ensure both trees are equal
+			const snippet = new SnippetParser().parse(input);
+			const input2 = snippet.toTextmateString();
+			const snippet2 = new SnippetParser().parse(input2);
+
+			function checkCheckChildren(marker1: Marker, marker2: Marker) {
+				assert.ok(marker1 instanceof Object.getPrototypeOf(marker2).constructor);
+				assert.ok(marker2 instanceof Object.getPrototypeOf(marker1).constructor);
+
+				assert.strictEqual(marker1.children.length, marker2.children.length);
+				assert.strictEqual(marker1.toString(), marker2.toString());
+
+				for (let i = 0; i < marker1.children.length; i++) {
+					checkCheckChildren(marker1.children[i], marker2.children[i]);
+				}
+			}
+
+			checkCheckChildren(snippet, snippet2);
+		}
+
+		assertIdent('$1');
+		assertIdent('\\$1');
+		assertIdent('console.log(${1|not\\, not, five, 5, 1   23|});');
+		assertIdent('console.log(${1|not\\, not, \\| five, 5, 1   23|});');
+		assertIdent('this is text');
+		assertIdent('this ${1:is ${2:nested with $var}}');
+		assertIdent('this ${1:is ${2:nested with $var}}}');
+		assertIdent('this ${1:is ${2:nested with $var}} and repeating $1');
+	});
+
+	test('Parser, choise marker', () => {
+		const { placeholders } = new SnippetParser().parse('${1|one,two,three|}');
+
+		assert.strictEqual(placeholders.length, 1);
+		assert.ok(placeholders[0].choice instanceof Choice);
+		assert.ok(placeholders[0].children[0] instanceof Choice);
+		assert.strictEqual((<Choice>placeholders[0].children[0]).options.length, 3);
+
+		assertText('${1|one,two,three|}', 'one');
+		assertText('\\${1|one,two,three|}', '${1|one,two,three|}');
+		assertText('${1\\|one,two,three|}', '${1\\|one,two,three|}');
+		assertText('${1||}', '${1||}');
+	});
+
+	test('Backslash character escape in choice tabstop doesn\'t work #58494', function () {
+
+		const { placeholders } = new SnippetParser().parse('${1|\\,,},$,\\|,\\\\|}');
+		assert.strictEqual(placeholders.length, 1);
+		assert.ok(placeholders[0].choice instanceof Choice);
+	});
+
+	test('Parser, only textmate', () => {
+		const p = new SnippetParser();
+		assertMarker(p.parse('far{{}}boo'), Text);
+		assertMarker(p.parse('far{{123}}boo'), Text);
+		assertMarker(p.parse('far\\{{123}}boo'), Text);
+
+		assertMarker(p.parse('far$0boo'), Text, Placeholder, Text);
+		assertMarker(p.parse('far${123}boo'), Text, Placeholder, Text);
+		assertMarker(p.parse('far\\${123}boo'), Text);
+	});
+
+	test('Parser, real world', () => {
+		let marker = new SnippetParser().parse('console.warn(${1: $TM_SELECTED_TEXT })').children;
+
+		assert.strictEqual(marker[0].toString(), 'console.warn(');
+		assert.ok(marker[1] instanceof Placeholder);
+		assert.strictEqual(marker[2].toString(), ')');
+
+		const placeholder = <Placeholder>marker[1];
+		assert.strictEqual(placeholder.index, 1);
+		assert.strictEqual(placeholder.children.length, 3);
+		assert.ok(placeholder.children[0] instanceof Text);
+		assert.ok(placeholder.children[1] instanceof Variable);
+		assert.ok(placeholder.children[2] instanceof Text);
+		assert.strictEqual(placeholder.children[0].toString(), ' ');
+		assert.strictEqual(placeholder.children[1].toString(), '');
+		assert.strictEqual(placeholder.children[2].toString(), ' ');
+
+		const nestedVariable = <Variable>placeholder.children[1];
+		assert.strictEqual(nestedVariable.name, 'TM_SELECTED_TEXT');
+		assert.strictEqual(nestedVariable.children.length, 0);
+
+		marker = new SnippetParser().parse('$TM_SELECTED_TEXT').children;
+		assert.strictEqual(marker.length, 1);
+		assert.ok(marker[0] instanceof Variable);
+	});
+
+	test('Parser, transform example', () => {
+		let { children } = new SnippetParser().parse('${1:name} : ${2:type}${3/\\s:=(.*)/${1:+ :=}${1}/};\n$0');
+
+		//${1:name}
+		assert.ok(children[0] instanceof Placeholder);
+		assert.strictEqual(children[0].children.length, 1);
+		assert.strictEqual(children[0].children[0].toString(), 'name');
+		assert.strictEqual((<Placeholder>children[0]).transform, undefined);
+
+		// :
+		assert.ok(children[1] instanceof Text);
+		assert.strictEqual(children[1].toString(), ' : ');
+
+		//${2:type}
+		assert.ok(children[2] instanceof Placeholder);
+		assert.strictEqual(children[2].children.length, 1);
+		assert.strictEqual(children[2].children[0].toString(), 'type');
+
+		//${3/\\s:=(.*)/${1:+ :=}${1}/}
+		assert.ok(children[3] instanceof Placeholder);
+		assert.strictEqual(children[3].children.length, 0);
+		assert.notStrictEqual((<Placeholder>children[3]).transform, undefined);
+		let transform = (<Placeholder>children[3]).transform!;
+		assert.deepStrictEqual(transform.regexp.source, /\s:=(.*)/.source);
+		assert.strictEqual(transform.children.length, 2);
+		assert.ok(transform.children[0] instanceof FormatString);
+		assert.strictEqual((<FormatString>transform.children[0]).index, 1);
+		assert.strictEqual((<FormatString>transform.children[0]).ifValue, ' :=');
+		assert.ok(transform.children[1] instanceof FormatString);
+		assert.strictEqual((<FormatString>transform.children[1]).index, 1);
+		assert.ok(children[4] instanceof Text);
+		assert.strictEqual(children[4].toString(), ';\n');
+
+	});
+
+	// TODO @jrieken making this strictEqul causes circular json conversion errors
+	test('Parser, default placeholder values', () => {
+
+		assertMarker('errorContext: `${1:err}`, error: $1', Text, Placeholder, Text, Placeholder);
+
+		const [, p1, , p2] = new SnippetParser().parse('errorContext: `${1:err}`, error:$1').children;
+
+		assert.strictEqual((<Placeholder>p1).index, 1);
+		assert.strictEqual((<Placeholder>p1).children.length, 1);
+		assert.strictEqual((<Text>(<Placeholder>p1).children[0]).toString(), 'err');
+
+		assert.strictEqual((<Placeholder>p2).index, 1);
+		assert.strictEqual((<Placeholder>p2).children.length, 1);
+		assert.strictEqual((<Text>(<Placeholder>p2).children[0]).toString(), 'err');
+	});
+
+	// TODO @jrieken making this strictEqul causes circular json conversion errors
+	test('Parser, default placeholder values and one transform', () => {
+
+		assertMarker('errorContext: `${1:err}`, error: ${1/err/ok/}', Text, Placeholder, Text, Placeholder);
+
+		const [, p3, , p4] = new SnippetParser().parse('errorContext: `${1:err}`, error:${1/err/ok/}').children;
+
+		assert.strictEqual((<Placeholder>p3).index, 1);
+		assert.strictEqual((<Placeholder>p3).children.length, 1);
+		assert.strictEqual((<Text>(<Placeholder>p3).children[0]).toString(), 'err');
+		assert.strictEqual((<Placeholder>p3).transform, undefined);
+
+		assert.strictEqual((<Placeholder>p4).index, 1);
+		assert.strictEqual((<Placeholder>p4).children.length, 1);
+		assert.strictEqual((<Text>(<Placeholder>p4).children[0]).toString(), 'err');
+		assert.notStrictEqual((<Placeholder>p4).transform, undefined);
+	});
+
+	test('Repeated snippet placeholder should always inherit, #31040', function () {
+		assertText('${1:foo}-abc-$1', 'foo-abc-foo');
+		assertText('${1:foo}-abc-${1}', 'foo-abc-foo');
+		assertText('${1:foo}-abc-${1:bar}', 'foo-abc-foo');
+		assertText('${1}-abc-${1:foo}', 'foo-abc-foo');
+	});
+
+	test('backspace esapce in TM only, #16212', () => {
+		const actual = new SnippetParser().text('Foo \\\\${abc}bar');
+		assert.strictEqual(actual, 'Foo \\bar');
+	});
+
+	test('colon as variable/placeholder value, #16717', () => {
+		let actual = new SnippetParser().text('${TM_SELECTED_TEXT:foo:bar}');
+		assert.strictEqual(actual, 'foo:bar');
+
+		actual = new SnippetParser().text('${1:foo:bar}');
+		assert.strictEqual(actual, 'foo:bar');
+	});
+
+	test('incomplete placeholder', () => {
+		assertTextAndMarker('${1:}', '', Placeholder);
+	});
+
+	test('marker#len', () => {
+
+		function assertLen(template: string, ...lengths: number[]): void {
+			const snippet = new SnippetParser().parse(template, true);
+			snippet.walk(m => {
+				const expected = lengths.shift();
+				assert.strictEqual(m.len(), expected);
+				return true;
+			});
+			assert.strictEqual(lengths.length, 0);
+		}
+
+		assertLen('text$0', 4, 0);
+		assertLen('$1text$0', 0, 4, 0);
+		assertLen('te$1xt$0', 2, 0, 2, 0);
+		assertLen('errorContext: `${1:err}`, error: $0', 15, 0, 3, 10, 0);
+		assertLen('errorContext: `${1:err}`, error: $1$0', 15, 0, 3, 10, 0, 3, 0);
+		assertLen('$TM_SELECTED_TEXT$0', 0, 0);
+		assertLen('${TM_SELECTED_TEXT:def}$0', 0, 3, 0);
+	});
+
+	test('parser, parent node', function () {
+		let snippet = new SnippetParser().parse('This ${1:is ${2:nested}}$0', true);
+
+		assert.strictEqual(snippet.placeholders.length, 3);
+		let [first, second] = snippet.placeholders;
+		assert.strictEqual(first.index, 1);
+		assert.strictEqual(second.index, 2);
+		assert.ok(second.parent === first);
+		assert.ok(first.parent === snippet);
+
+		snippet = new SnippetParser().parse('${VAR:default${1:value}}$0', true);
+		assert.strictEqual(snippet.placeholders.length, 2);
+		[first] = snippet.placeholders;
+		assert.strictEqual(first.index, 1);
+
+		assert.ok(snippet.children[0] instanceof Variable);
+		assert.ok(first.parent === snippet.children[0]);
+	});
+
+	test('TextmateSnippet#enclosingPlaceholders', () => {
+		let snippet = new SnippetParser().parse('This ${1:is ${2:nested}}$0', true);
+		let [first, second] = snippet.placeholders;
+
+		assert.deepStrictEqual(snippet.enclosingPlaceholders(first), []);
+		assert.deepStrictEqual(snippet.enclosingPlaceholders(second), [first]);
+	});
+
+	test('TextmateSnippet#offset', () => {
+		let snippet = new SnippetParser().parse('te$1xt', true);
+		assert.strictEqual(snippet.offset(snippet.children[0]), 0);
+		assert.strictEqual(snippet.offset(snippet.children[1]), 2);
+		assert.strictEqual(snippet.offset(snippet.children[2]), 2);
+
+		snippet = new SnippetParser().parse('${TM_SELECTED_TEXT:def}', true);
+		assert.strictEqual(snippet.offset(snippet.children[0]), 0);
+		assert.strictEqual(snippet.offset((<Variable>snippet.children[0]).children[0]), 0);
+
+		// forgein marker
+		assert.strictEqual(snippet.offset(new Text('foo')), -1);
+	});
+
+	test('TextmateSnippet#placeholder', () => {
+		let snippet = new SnippetParser().parse('te$1xt$0', true);
+		let placeholders = snippet.placeholders;
+		assert.strictEqual(placeholders.length, 2);
+
+		snippet = new SnippetParser().parse('te$1xt$1$0', true);
+		placeholders = snippet.placeholders;
+		assert.strictEqual(placeholders.length, 3);
+
+
+		snippet = new SnippetParser().parse('te$1xt$2$0', true);
+		placeholders = snippet.placeholders;
+		assert.strictEqual(placeholders.length, 3);
+
+		snippet = new SnippetParser().parse('${1:bar${2:foo}bar}$0', true);
+		placeholders = snippet.placeholders;
+		assert.strictEqual(placeholders.length, 3);
+	});
+
+	test('TextmateSnippet#replace 1/2', function () {
+		let snippet = new SnippetParser().parse('aaa${1:bbb${2:ccc}}$0', true);
+
+		assert.strictEqual(snippet.placeholders.length, 3);
+		const [, second] = snippet.placeholders;
+		assert.strictEqual(second.index, 2);
+
+		const enclosing = snippet.enclosingPlaceholders(second);
+		assert.strictEqual(enclosing.length, 1);
+		assert.strictEqual(enclosing[0].index, 1);
+
+		let nested = new SnippetParser().parse('ddd$1eee$0', true);
+		snippet.replace(second, nested.children);
+
+		assert.strictEqual(snippet.toString(), 'aaabbbdddeee');
+		assert.strictEqual(snippet.placeholders.length, 4);
+		assert.strictEqual(snippet.placeholders[0].index, 1);
+		assert.strictEqual(snippet.placeholders[1].index, 1);
+		assert.strictEqual(snippet.placeholders[2].index, 0);
+		assert.strictEqual(snippet.placeholders[3].index, 0);
+
+		const newEnclosing = snippet.enclosingPlaceholders(snippet.placeholders[1]);
+		assert.ok(newEnclosing[0] === snippet.placeholders[0]);
+		assert.strictEqual(newEnclosing.length, 1);
+		assert.strictEqual(newEnclosing[0].index, 1);
+	});
+
+	test('TextmateSnippet#replace 2/2', function () {
+		let snippet = new SnippetParser().parse('aaa${1:bbb${2:ccc}}$0', true);
+
+		assert.strictEqual(snippet.placeholders.length, 3);
+		const [, second] = snippet.placeholders;
+		assert.strictEqual(second.index, 2);
+
+		let nested = new SnippetParser().parse('dddeee$0', true);
+		snippet.replace(second, nested.children);
+
+		assert.strictEqual(snippet.toString(), 'aaabbbdddeee');
+		assert.strictEqual(snippet.placeholders.length, 3);
+	});
+
+	test('Snippet order for placeholders, #28185', function () {
+
+		const _10 = new Placeholder(10);
+		const _2 = new Placeholder(2);
+
+		assert.strictEqual(Placeholder.compareByIndex(_10, _2), 1);
+	});
+
+	test('Maximum call stack size exceeded, #28983', function () {
+		new SnippetParser().parse('${1:${foo:${1}}}');
+	});
+
+	test('Snippet can freeze the editor, #30407', function () {
+
+		const seen = new Set<Marker>();
+
+		seen.clear();
+		new SnippetParser().parse('class ${1:${TM_FILENAME/(?:\\A|_)([A-Za-z0-9]+)(?:\\.rb)?/(?2::\\u$1)/g}} < ${2:Application}Controller\n  $3\nend').walk(marker => {
+			assert.ok(!seen.has(marker));
+			seen.add(marker);
+			return true;
+		});
+
+		seen.clear();
+		new SnippetParser().parse('${1:${FOO:abc$1def}}').walk(marker => {
+			assert.ok(!seen.has(marker));
+			seen.add(marker);
+			return true;
+		});
+	});
+
+	test('Snippets: make parser ignore `${0|choice|}`, #31599', function () {
+		assertTextAndMarker('${0|foo,bar|}', '${0|foo,bar|}', Text);
+		assertTextAndMarker('${1|foo,bar|}', 'foo', Placeholder);
+	});
+
+
+	test('Transform -> FormatString#resolve', function () {
+
+		// shorthand functions
+		assert.strictEqual(new FormatString(1, 'upcase').resolve('foo'), 'FOO');
+		assert.strictEqual(new FormatString(1, 'downcase').resolve('FOO'), 'foo');
+		assert.strictEqual(new FormatString(1, 'capitalize').resolve('bar'), 'Bar');
+		assert.strictEqual(new FormatString(1, 'capitalize').resolve('bar no repeat'), 'Bar no repeat');
+		assert.strictEqual(new FormatString(1, 'pascalcase').resolve('bar-foo'), 'BarFoo');
+		assert.strictEqual(new FormatString(1, 'pascalcase').resolve('bar-42-foo'), 'Bar42Foo');
+		assert.strictEqual(new FormatString(1, 'camelcase').resolve('bar-foo'), 'barFoo');
+		assert.strictEqual(new FormatString(1, 'camelcase').resolve('bar-42-foo'), 'bar42Foo');
+		assert.strictEqual(new FormatString(1, 'notKnown').resolve('input'), 'input');
+
+		// if
+		assert.strictEqual(new FormatString(1, undefined, 'foo', undefined).resolve(undefined), '');
+		assert.strictEqual(new FormatString(1, undefined, 'foo', undefined).resolve(''), '');
+		assert.strictEqual(new FormatString(1, undefined, 'foo', undefined).resolve('bar'), 'foo');
+
+		// else
+		assert.strictEqual(new FormatString(1, undefined, undefined, 'foo').resolve(undefined), 'foo');
+		assert.strictEqual(new FormatString(1, undefined, undefined, 'foo').resolve(''), 'foo');
+		assert.strictEqual(new FormatString(1, undefined, undefined, 'foo').resolve('bar'), 'bar');
+
+		// if-else
+		assert.strictEqual(new FormatString(1, undefined, 'bar', 'foo').resolve(undefined), 'foo');
+		assert.strictEqual(new FormatString(1, undefined, 'bar', 'foo').resolve(''), 'foo');
+		assert.strictEqual(new FormatString(1, undefined, 'bar', 'foo').resolve('baz'), 'bar');
+	});
+
+	test('Snippet variable transformation doesn\'t work if regex is complicated and snippet body contains \'$$\' #55627', function () {
+		const snippet = new SnippetParser().parse('const fileName = "${TM_FILENAME/(.*)\\..+$/$1/}"');
+		assert.strictEqual(snippet.toTextmateString(), 'const fileName = "${TM_FILENAME/(.*)\\..+$/${1}/}"');
+	});
+
+	test('[BUG] HTML attribute suggestions: Snippet session does not have end-position set, #33147', function () {
+
+		const { placeholders } = new SnippetParser().parse('src="$1"', true);
+		const [first, second] = placeholders;
+
+		assert.strictEqual(placeholders.length, 2);
+		assert.strictEqual(first.index, 1);
+		assert.strictEqual(second.index, 0);
+
+	});
+
+	test('Snippet optional transforms are not applied correctly when reusing the same variable, #37702', function () {
+
+		const transform = new Transform();
+		transform.appendChild(new FormatString(1, 'upcase'));
+		transform.appendChild(new FormatString(2, 'upcase'));
+		transform.regexp = /^(.)|-(.)/g;
+
+		assert.strictEqual(transform.resolve('my-file-name'), 'MyFileName');
+
+		const clone = transform.clone();
+		assert.strictEqual(clone.resolve('my-file-name'), 'MyFileName');
+	});
+
+	test('problem with snippets regex #40570', function () {
+
+		const snippet = new SnippetParser().parse('${TM_DIRECTORY/.*src[\\/](.*)/$1/}');
+		assertMarker(snippet, Variable);
+	});
+
+	test('Variable transformation doesn\'t work if undefined variables are used in the same snippet #51769', function () {
+		let transform = new Transform();
+		transform.appendChild(new Text('bar'));
+		transform.regexp = new RegExp('foo', 'gi');
+		assert.strictEqual(transform.toTextmateString(), '/foo/bar/ig');
+	});
+
+	test('Snippet parser freeze #53144', function () {
+		let snippet = new SnippetParser().parse('${1/(void$)|(.+)/${1:?-\treturn nil;}/}');
+		assertMarker(snippet, Placeholder);
+	});
+
+	test('snippets variable not resolved in JSON proposal #52931', function () {
+		assertTextAndMarker('FOO${1:/bin/bash}', 'FOO/bin/bash', Text, Placeholder);
+	});
+
+	test('Mirroring sequence of nested placeholders not selected properly on backjumping #58736', function () {
+		let snippet = new SnippetParser().parse('${3:nest1 ${1:nest2 ${2:nest3}}} $3');
+		assert.strictEqual(snippet.children.length, 3);
+		assert.ok(snippet.children[0] instanceof Placeholder);
+		assert.ok(snippet.children[1] instanceof Text);
+		assert.ok(snippet.children[2] instanceof Placeholder);
+
+		function assertParent(marker: Marker) {
+			marker.children.forEach(assertParent);
+			if (!(marker instanceof Placeholder)) {
+				return;
+			}
+			let found = false;
+			let m: Marker = marker;
+			while (m && !found) {
+				if (m.parent === snippet) {
+					found = true;
+				}
+				m = m.parent;
+			}
+			assert.ok(found);
+		}
+		let [, , clone] = snippet.children;
+		assertParent(clone);
+	});
+
+	test('Backspace can\'t be escaped in snippet variable transforms #65412', function () {
+
+		let snippet = new SnippetParser().parse('namespace ${TM_DIRECTORY/[\\/]/\\\\/g};');
+		assertMarker(snippet, Text, Variable, Text);
+	});
+
+	test('Snippet cannot escape closing bracket inside conditional insertion variable replacement #78883', function () {
+
+		let snippet = new SnippetParser().parse('${TM_DIRECTORY/(.+)/${1:+import { hello \\} from world}/}');
+		let variable = <Variable>snippet.children[0];
+		assert.strictEqual(snippet.children.length, 1);
+		assert.ok(variable instanceof Variable);
+		assert.ok(variable.transform);
+		assert.strictEqual(variable.transform!.children.length, 1);
+		assert.ok(variable.transform!.children[0] instanceof FormatString);
+		assert.strictEqual((<FormatString>variable.transform!.children[0]).ifValue, 'import { hello } from world');
+		assert.strictEqual((<FormatString>variable.transform!.children[0]).elseValue, undefined);
+	});
+
+	test('Snippet escape backslashes inside conditional insertion variable replacement #80394', function () {
+
+		let snippet = new SnippetParser().parse('${CURRENT_YEAR/(.+)/${1:+\\\\}/}');
+		let variable = <Variable>snippet.children[0];
+		assert.strictEqual(snippet.children.length, 1);
+		assert.ok(variable instanceof Variable);
+		assert.ok(variable.transform);
+		assert.strictEqual(variable.transform!.children.length, 1);
+		assert.ok(variable.transform!.children[0] instanceof FormatString);
+		assert.strictEqual((<FormatString>variable.transform!.children[0]).ifValue, '\\');
+		assert.strictEqual((<FormatString>variable.transform!.children[0]).elseValue, undefined);
+	});
+});

packages/foam-vscode/src/core/janitor/apply-text-edit.ts

@@ -13,8 +13,8 @@ export const applyTextEdit = (text: string, textEdit: TextEdit): string => {
   const eol = detectNewline(text) || os.EOL;
   const lines = text.split(eol);
   const characters = text.split('');
-  let startOffset = getOffset(lines, textEdit.range.start, eol);
-  let endOffset = getOffset(lines, textEdit.range.end, eol);
+  const startOffset = getOffset(lines, textEdit.range.start, eol);
+  const endOffset = getOffset(lines, textEdit.range.end, eol);
   const deleteCount = endOffset - startOffset;
 
   const textToAppend = `${textEdit.newText}`;
@@ -34,5 +34,5 @@ const getOffset = (
     offset = offset + lines[i].length + eolLen;
     i++;
   }
-  return offset + Math.min(position.character, lines[i].length);
+  return offset + Math.min(position.character, lines[i]?.length ?? 0);
 };

packages/foam-vscode/src/core/janitor/generateHeadings.test.ts

@@ -1,10 +1,9 @@
 import { generateHeading } from '.';
 import { TEST_DATA_DIR } from '../../test/test-utils';
-import { MarkdownResourceProvider } from '../markdown-provider';
+import { MarkdownResourceProvider } from '../services/markdown-provider';
 import { bootstrap } from '../model/foam';
 import { Resource } from '../model/note';
 import { Range } from '../model/range';
-import { URI } from '../model/uri';
 import { FoamWorkspace } from '../model/workspace';
 import { FileDataStore, Matcher } from '../services/datastore';
 import { Logger } from '../utils/log';
@@ -16,11 +15,11 @@ describe('generateHeadings', () => {
   const findBySlug = (slug: string): Resource => {
     return _workspace
       .list()
-      .find(res => URI.getBasename(res.uri) === slug) as Resource;
+      .find(res => res.uri.getName() === slug) as Resource;
   };
 
   beforeAll(async () => {
-    const matcher = new Matcher([URI.joinPath(TEST_DATA_DIR, '__scaffold__')]);
+    const matcher = new Matcher([TEST_DATA_DIR.joinPath('__scaffold__')]);
     const mdProvider = new MarkdownResourceProvider(matcher);
     const foam = await bootstrap(matcher, new FileDataStore(), [mdProvider]);
     _workspace = foam.workspace;

packages/foam-vscode/src/core/janitor/generateLinkReferences.test.ts

@@ -1,10 +1,9 @@
 import { generateLinkReferences } from '.';
 import { TEST_DATA_DIR } from '../../test/test-utils';
-import { MarkdownResourceProvider } from '../markdown-provider';
+import { MarkdownResourceProvider } from '../services/markdown-provider';
 import { bootstrap } from '../model/foam';
 import { Resource } from '../model/note';
 import { Range } from '../model/range';
-import { URI } from '../model/uri';
 import { FoamWorkspace } from '../model/workspace';
 import { FileDataStore, Matcher } from '../services/datastore';
 import { Logger } from '../utils/log';
@@ -13,14 +12,15 @@ Logger.setLevel('error');
 
 describe('generateLinkReferences', () => {
   let _workspace: FoamWorkspace;
+  // TODO slug must be reserved for actual slugs, not file names
   const findBySlug = (slug: string): Resource => {
     return _workspace
       .list()
-      .find(res => URI.getBasename(res.uri) === slug) as Resource;
+      .find(res => res.uri.getName() === slug) as Resource;
   };
 
   beforeAll(async () => {
-    const matcher = new Matcher([URI.joinPath(TEST_DATA_DIR, '__scaffold__')]);
+    const matcher = new Matcher([TEST_DATA_DIR.joinPath('__scaffold__')]);
     const mdProvider = new MarkdownResourceProvider(matcher);
     const foam = await bootstrap(matcher, new FileDataStore(), [mdProvider]);
     _workspace = foam.workspace;

packages/foam-vscode/src/core/janitor/index.ts

@@ -1,19 +1,15 @@
-import GithubSlugger from 'github-slugger';
 import { Resource } from '../model/note';
 import { Range } from '../model/range';
 import {
   createMarkdownReferences,
   stringifyMarkdownLinkReferenceDefinition,
-} from '../markdown-provider';
+} from '../services/markdown-provider';
 import { getHeadingFromFileName } from '../utils';
 import { FoamWorkspace } from '../model/workspace';
-import { uriToSlug } from '../utils/slug';
 
 export const LINK_REFERENCE_DEFINITION_HEADER = `[//begin]: # "Autogenerated link references for markdown compatibility"`;
 export const LINK_REFERENCE_DEFINITION_FOOTER = `[//end]: # "Autogenerated link references"`;
 
-const slugger = new GithubSlugger();
-
 export interface TextEdit {
   range: Range;
   newText: string;
@@ -60,7 +56,7 @@ export const generateLinkReferences = (
     const first = note.definitions[0];
     const last = note.definitions[note.definitions.length - 1];
 
-    var nonGeneratedReferenceDefinitions = note.definitions;
+    let nonGeneratedReferenceDefinitions = note.definitions;
 
     // if we have more definitions then referenced pages AND the page refers to a page
     // we expect non-generated link definitions to be present
@@ -119,7 +115,7 @@ export const generateLinkReferences = (
       return null;
     }
 
-    var fullReferences = `${newReferences}`;
+    let fullReferences = `${newReferences}`;
     // If there are any non-generated definitions, add those to the output as well
     if (
       nonGeneratedReferenceDefinitions.length > 0 &&
@@ -168,7 +164,7 @@ export const generateHeading = (note: Resource): TextEdit | null => {
 
   return {
     newText: `${paddingStart}# ${getHeadingFromFileName(
-      uriToSlug(note.uri)
+      note.uri.getName()
     )}${paddingEnd}`,
     range: Range.createFromPosition(
       note.source.contentStart,
@@ -176,14 +172,3 @@ export const generateHeading = (note: Resource): TextEdit | null => {
     ),
   };
 };
-
-/**
- *
- * @param fileName
- * @returns null if file name is already in kebab case otherise returns
- * the kebab cased file name
- */
-export const getKebabCaseFileName = (fileName: string) => {
-  const kebabCasedFileName = slugger.slug(fileName);
-  return kebabCasedFileName === fileName ? null : kebabCasedFileName;
-};

packages/foam-vscode/src/core/markdown-provider.test.ts

@@ -1,492 +0,0 @@
-import {
-  createMarkdownParser,
-  createMarkdownReferences,
-  ParserPlugin,
-} from './markdown-provider';
-import { DirectLink, WikiLink } from './model/note';
-import { Logger } from './utils/log';
-import { uriToSlug } from './utils/slug';
-import { URI } from './model/uri';
-import { FoamGraph } from './model/graph';
-import { Range } from './model/range';
-import { createTestWorkspace } from '../test/test-utils';
-
-Logger.setLevel('error');
-
-const pageA = `
-# Page A
-
-## Section
-- [[page-b]]
-- [[page-c]]
-- [[Page D]]
-- [[page e]]
-`;
-
-const pageB = `
-# Page B
-
-This references [[page-a]]`;
-
-const pageC = `
-# Page C
-`;
-
-const pageD = `
-# Page D
-`;
-
-const pageE = `
-# Page E
-`;
-
-const createNoteFromMarkdown = (path: string, content: string) =>
-  createMarkdownParser([]).parse(URI.file(path), content);
-
-describe('Markdown loader', () => {
-  it('Converts markdown to notes', () => {
-    const workspace = createTestWorkspace();
-    workspace.set(createNoteFromMarkdown('/page-a.md', pageA));
-    workspace.set(createNoteFromMarkdown('/page-b.md', pageB));
-    workspace.set(createNoteFromMarkdown('/page-c.md', pageC));
-    workspace.set(createNoteFromMarkdown('/page-d.md', pageD));
-    workspace.set(createNoteFromMarkdown('/page-e.md', pageE));
-
-    expect(
-      workspace
-        .list()
-        .map(n => n.uri)
-        .map(uriToSlug)
-        .sort()
-    ).toEqual(['page-a', 'page-b', 'page-c', 'page-d', 'page-e']);
-  });
-
-  it('Ingores external links', () => {
-    const note = createNoteFromMarkdown(
-      '/path/to/page-a.md',
-      `
-this is a [link to google](https://www.google.com)
-`
-    );
-    expect(note.links.length).toEqual(0);
-  });
-
-  it('Ignores references to sections in the same file', () => {
-    const note = createNoteFromMarkdown(
-      '/path/to/page-a.md',
-      `
-this is a [link to intro](#introduction)
-`
-    );
-    expect(note.links.length).toEqual(0);
-  });
-
-  it('Parses internal links correctly', () => {
-    const note = createNoteFromMarkdown(
-      '/path/to/page-a.md',
-      'this is a [link to page b](../doc/page-b.md)'
-    );
-    expect(note.links.length).toEqual(1);
-    const link = note.links[0] as DirectLink;
-    expect(link.type).toEqual('link');
-    expect(link.label).toEqual('link to page b');
-    expect(link.target).toEqual('../doc/page-b.md');
-  });
-
-  it('Parses links that have formatting in label', () => {
-    const note = createNoteFromMarkdown(
-      '/path/to/page-a.md',
-      'this is [**link** with __formatting__](../doc/page-b.md)'
-    );
-    expect(note.links.length).toEqual(1);
-    const link = note.links[0] as DirectLink;
-    expect(link.type).toEqual('link');
-    expect(link.label).toEqual('link with formatting');
-    expect(link.target).toEqual('../doc/page-b.md');
-  });
-
-  it('Parses wikilinks correctly', () => {
-    const workspace = createTestWorkspace();
-    const noteA = createNoteFromMarkdown('/page-a.md', pageA);
-    const noteB = createNoteFromMarkdown('/page-b.md', pageB);
-    const noteC = createNoteFromMarkdown('/page-c.md', pageC);
-    const noteD = createNoteFromMarkdown('/Page D.md', pageD);
-    const noteE = createNoteFromMarkdown('/page e.md', pageE);
-
-    workspace
-      .set(noteA)
-      .set(noteB)
-      .set(noteC)
-      .set(noteD)
-      .set(noteE);
-    const graph = FoamGraph.fromWorkspace(workspace);
-
-    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([
-      noteA.uri,
-    ]);
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([
-      noteB.uri,
-      noteC.uri,
-      noteD.uri,
-      noteE.uri,
-    ]);
-  });
-
-  it('Parses backlinks with an alias', () => {
-    const note = createNoteFromMarkdown(
-      '/path/to/page-a.md',
-      'this is [[link|link alias]]. A link with spaces [[other link | spaced]]'
-    );
-    expect(note.links.length).toEqual(2);
-    let link = note.links[0] as WikiLink;
-    expect(link.type).toEqual('wikilink');
-    expect(link.rawText).toEqual('[[link|link alias]]');
-    expect(link.label).toEqual('link alias');
-    expect(link.target).toEqual('link');
-    link = note.links[1] as WikiLink;
-    expect(link.type).toEqual('wikilink');
-    expect(link.rawText).toEqual('[[other link | spaced]]');
-    expect(link.label).toEqual('spaced');
-    expect(link.target).toEqual('other link');
-  });
-
-  it('Skips wikilinks in codeblocks', () => {
-    const noteA = createNoteFromMarkdown(
-      '/dir1/page-a.md',
-      `
-this is some text with our [[first-wikilink]].
-
-\`\`\`
-this is inside a [[codeblock]]
-\`\`\`
-
-this is some text with our [[second-wikilink]].
-    `
-    );
-    expect(noteA.links.map(l => l.label)).toEqual([
-      'first-wikilink',
-      'second-wikilink',
-    ]);
-  });
-
-  it('Skips wikilinks in inlined codeblocks', () => {
-    const noteA = createNoteFromMarkdown(
-      '/dir1/page-a.md',
-      `
-this is some text with our [[first-wikilink]].
-
-this is \`inside a [[codeblock]]\`
-
-this is some text with our [[second-wikilink]].
-    `
-    );
-    expect(noteA.links.map(l => l.label)).toEqual([
-      'first-wikilink',
-      'second-wikilink',
-    ]);
-  });
-});
-
-describe('Note Title', () => {
-  it('should initialize note title if heading exists', () => {
-    const note = createNoteFromMarkdown(
-      '/page-a.md',
-      `
-# Page A
-this note has a title
-    `
-    );
-    expect(note.title).toBe('Page A');
-  });
-
-  it('should default to file name if heading does not exist', () => {
-    const note = createNoteFromMarkdown(
-      '/page-d.md',
-      `
-This file has no heading.
-      `
-    );
-
-    expect(note.title).toEqual('page-d');
-  });
-
-  it('should give precedence to frontmatter title over other headings', () => {
-    const note = createNoteFromMarkdown(
-      '/page-e.md',
-      `
----
-title: Note Title
-date: 20-12-12
----
-
-# Other Note Title
-      `
-    );
-
-    expect(note.title).toBe('Note Title');
-  });
-
-  it('should support numbers', () => {
-    const note1 = createNoteFromMarkdown('/157.md', `hello`);
-    expect(note1.title).toBe('157');
-
-    const note2 = createNoteFromMarkdown('/157.md', `# 158`);
-    expect(note2.title).toBe('158');
-
-    const note3 = createNoteFromMarkdown(
-      '/157.md',
-      `
----
-title: 159
----
-
-# 158
-`
-    );
-    expect(note3.title).toBe('159');
-  });
-
-  it('should not break on empty titles (see #276)', () => {
-    const note = createNoteFromMarkdown(
-      '/Hello Page.md',
-      `
-#
-
-this note has an empty title line
-    `
-    );
-    expect(note.title).toEqual('Hello Page');
-  });
-});
-
-describe('frontmatter', () => {
-  it('should parse yaml frontmatter', () => {
-    const note = createNoteFromMarkdown(
-      '/page-e.md',
-      `
----
-title: Note Title
-date: 20-12-12
----
-
-# Other Note Title`
-    );
-
-    expect(note.properties.title).toBe('Note Title');
-    expect(note.properties.date).toBe('20-12-12');
-  });
-
-  it('should parse empty frontmatter', () => {
-    const note = createNoteFromMarkdown(
-      '/page-f.md',
-      `
----
----
-
-# Empty Frontmatter
-`
-    );
-
-    expect(note.properties).toEqual({});
-  });
-
-  it('should not fail when there are issues with parsing frontmatter', () => {
-    const note = createNoteFromMarkdown(
-      '/page-f.md',
-      `
----
-title: - one
- - two
- - #
----
-
-`
-    );
-
-    expect(note.properties).toEqual({});
-  });
-});
-
-describe('wikilinks definitions', () => {
-  it('can generate links without file extension when includeExtension = false', () => {
-    const workspace = createTestWorkspace();
-    const noteA = createNoteFromMarkdown('/dir1/page-a.md', pageA);
-    workspace
-      .set(noteA)
-      .set(createNoteFromMarkdown('/dir1/page-b.md', pageB))
-      .set(createNoteFromMarkdown('/dir1/page-c.md', pageC));
-
-    const noExtRefs = createMarkdownReferences(workspace, noteA.uri, false);
-    expect(noExtRefs.map(r => r.url)).toEqual(['page-b', 'page-c']);
-  });
-
-  it('can generate links with file extension when includeExtension = true', () => {
-    const workspace = createTestWorkspace();
-    const noteA = createNoteFromMarkdown('/dir1/page-a.md', pageA);
-    workspace
-      .set(noteA)
-      .set(createNoteFromMarkdown('/dir1/page-b.md', pageB))
-      .set(createNoteFromMarkdown('/dir1/page-c.md', pageC));
-
-    const extRefs = createMarkdownReferences(workspace, noteA.uri, true);
-    expect(extRefs.map(r => r.url)).toEqual(['page-b.md', 'page-c.md']);
-  });
-
-  it('use relative paths', () => {
-    const workspace = createTestWorkspace();
-    const noteA = createNoteFromMarkdown('/dir1/page-a.md', pageA);
-    workspace
-      .set(noteA)
-      .set(createNoteFromMarkdown('/dir2/page-b.md', pageB))
-      .set(createNoteFromMarkdown('/dir3/page-c.md', pageC));
-
-    const extRefs = createMarkdownReferences(workspace, noteA.uri, true);
-    expect(extRefs.map(r => r.url)).toEqual([
-      '../dir2/page-b.md',
-      '../dir3/page-c.md',
-    ]);
-  });
-});
-
-describe('tags plugin', () => {
-  it('can find tags in the text of the note', () => {
-    const noteA = createNoteFromMarkdown(
-      '/dir1/page-a.md',
-      `
-# this is a #heading
-#this is some #text that includes #tags we #care-about.
-    `
-    );
-    expect(noteA.tags).toEqual([
-      { label: 'heading', range: Range.create(1, 12, 1, 20) },
-      { label: 'this', range: Range.create(2, 0, 2, 5) },
-      { label: 'text', range: Range.create(2, 14, 2, 19) },
-      { label: 'tags', range: Range.create(2, 34, 2, 39) },
-      { label: 'care-about', range: Range.create(2, 43, 2, 54) },
-    ]);
-  });
-
-  it('will skip tags in codeblocks', () => {
-    const noteA = createNoteFromMarkdown(
-      '/dir1/page-a.md',
-      `
-this is some #text that includes #tags we #care-about.
-
-\`\`\`
-this is a #codeblock
-\`\`\`
-    `
-    );
-    expect(noteA.tags.map(t => t.label)).toEqual([
-      'text',
-      'tags',
-      'care-about',
-    ]);
-  });
-
-  it('will skip tags in inlined codeblocks', () => {
-    const noteA = createNoteFromMarkdown(
-      '/dir1/page-a.md',
-      `
-this is some #text that includes #tags we #care-about.
-this is a \`inlined #codeblock\`
-    `
-    );
-    expect(noteA.tags.map(t => t.label)).toEqual([
-      'text',
-      'tags',
-      'care-about',
-    ]);
-  });
-  it('can find tags as text in yaml', () => {
-    const noteA = createNoteFromMarkdown(
-      '/dir1/page-a.md',
-      `
----
-tags: hello, world  this_is_good
----
-# this is a heading
-this is some #text that includes #tags we #care-about.
-    `
-    );
-    expect(noteA.tags.map(t => t.label)).toEqual([
-      'hello',
-      'world',
-      'this_is_good',
-      'text',
-      'tags',
-      'care-about',
-    ]);
-  });
-
-  it('can find tags as array in yaml', () => {
-    const noteA = createNoteFromMarkdown(
-      '/dir1/page-a.md',
-      `
----
-tags: [hello, world,  this_is_good]
----
-# this is a heading
-this is some #text that includes #tags we #care-about.
-    `
-    );
-    expect(noteA.tags.map(t => t.label)).toEqual([
-      'hello',
-      'world',
-      'this_is_good',
-      'text',
-      'tags',
-      'care-about',
-    ]);
-  });
-
-  it('provides rough range for tags in yaml', () => {
-    // For now it's enough to just get the YAML block range
-    // in the future we might want to be more specific
-
-    const noteA = createNoteFromMarkdown(
-      '/dir1/page-a.md',
-      `
----
-tags: [hello, world, this_is_good]
----
-# this is a heading
-this is some text
-    `
-    );
-    expect(noteA.tags[0]).toEqual({
-      label: 'hello',
-      range: Range.create(1, 0, 3, 3),
-    });
-  });
-});
-
-describe('parser plugins', () => {
-  const testPlugin: ParserPlugin = {
-    visit: (node, note) => {
-      if (node.type === 'heading') {
-        note.properties.hasHeading = true;
-      }
-    },
-  };
-  const parser = createMarkdownParser([testPlugin]);
-
-  it('can augment the parsing of the file', () => {
-    const note1 = parser.parse(
-      URI.file('/path/to/a'),
-      `
-This is a test note without headings.
-But with some content.
-`
-    );
-    expect(note1.properties.hasHeading).toBeUndefined();
-
-    const note2 = parser.parse(
-      URI.file('/path/to/a'),
-      `
-# This is a note with header
-and some content`
-    );
-    expect(note2.properties.hasHeading).toBeTruthy();
-  });
-});

packages/foam-vscode/src/core/model/foam.ts

@@ -4,7 +4,7 @@ import { FoamWorkspace } from './workspace';
 import { FoamGraph } from './graph';
 import { ResourceParser } from './note';
 import { ResourceProvider } from './provider';
-import { createMarkdownParser } from '../markdown-provider';
+import { createMarkdownParser } from '../services/markdown-parser';
 import { FoamTags } from './tags';
 
 export interface Services {

packages/foam-vscode/src/core/model/graph.test.ts

@@ -0,0 +1,681 @@
+import { createTestNote, createTestWorkspace } from '../../test/test-utils';
+import { FoamGraph } from './graph';
+import { URI } from './uri';
+
+describe('Graph', () => {
+  it('should use wikilink slugs to connect nodes', () => {
+    const workspace = createTestWorkspace();
+    const noteA = createTestNote({
+      uri: '/page-a.md',
+      links: [
+        { slug: 'page-b' },
+        { slug: 'page-c' },
+        { slug: 'Page D' },
+        { slug: 'page e' },
+      ],
+    });
+    const noteB = createTestNote({
+      uri: '/page-b.md',
+      links: [{ slug: 'page-a' }],
+    });
+    const noteC = createTestNote({ uri: '/page-c.md' });
+    const noteD = createTestNote({ uri: '/Page D.md' });
+    const noteE = createTestNote({ uri: '/page e.md' });
+
+    workspace
+      .set(noteA)
+      .set(noteB)
+      .set(noteC)
+      .set(noteD)
+      .set(noteE);
+    const graph = FoamGraph.fromWorkspace(workspace);
+
+    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([
+      noteA.uri,
+    ]);
+    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([
+      noteB.uri,
+      noteC.uri,
+      noteD.uri,
+      noteE.uri,
+    ]);
+  });
+
+  it('should include resources and placeholders', () => {
+    const ws = createTestWorkspace();
+    ws.set(
+      createTestNote({
+        uri: '/page-a.md',
+        links: [{ slug: 'placeholder-link' }],
+      })
+    );
+    ws.set(createTestNote({ uri: '/file.pdf' }));
+
+    const graph = FoamGraph.fromWorkspace(ws);
+
+    expect(
+      graph
+        .getAllNodes()
+        .map(uri => uri.path)
+        .sort()
+    ).toEqual(['/file.pdf', '/page-a.md', 'placeholder-link']);
+  });
+
+  it('should support multiple connections between the same resources', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/note-a.md',
+    });
+    const noteB = createTestNote({
+      uri: '/note-b.md',
+      links: [{ to: noteA.uri.path }, { to: noteA.uri.path }],
+    });
+    const ws = createTestWorkspace()
+      .set(noteA)
+      .set(noteB);
+    const graph = FoamGraph.fromWorkspace(ws);
+    expect(graph.getBacklinks(noteA.uri)).toEqual([
+      {
+        source: noteB.uri,
+        target: noteA.uri,
+        link: expect.objectContaining({ type: 'link' }),
+      },
+      {
+        source: noteB.uri,
+        target: noteA.uri,
+        link: expect.objectContaining({ type: 'link' }),
+      },
+    ]);
+  });
+
+  it('should keep the connection when removing a single link amongst several between two resources', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/note-a.md',
+    });
+    const noteB = createTestNote({
+      uri: '/note-b.md',
+      links: [{ to: noteA.uri.path }, { to: noteA.uri.path }],
+    });
+    const ws = createTestWorkspace()
+      .set(noteA)
+      .set(noteB);
+    const graph = FoamGraph.fromWorkspace(ws, true);
+
+    expect(graph.getBacklinks(noteA.uri).length).toEqual(2);
+
+    const noteBBis = createTestNote({
+      uri: '/note-b.md',
+      links: [{ to: noteA.uri.path }],
+    });
+    ws.set(noteBBis);
+    expect(graph.getBacklinks(noteA.uri).length).toEqual(1);
+
+    ws.dispose();
+    graph.dispose();
+  });
+
+  it('should create inbound connections for target note', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ slug: 'page-b' }],
+    });
+    const ws = createTestWorkspace()
+      .set(noteA)
+      .set(
+        createTestNote({
+          uri: '/somewhere/page-b.md',
+          links: [{ slug: 'page-a' }],
+        })
+      )
+      .set(
+        createTestNote({
+          uri: '/path/another/page-c.md',
+          links: [{ slug: '/path/to/page-a' }],
+        })
+      )
+      .set(
+        createTestNote({
+          uri: '/absolute/path/page-d.md',
+          links: [{ slug: '../to/page-a.md' }],
+        })
+      );
+    const graph = FoamGraph.fromWorkspace(ws);
+
+    expect(
+      graph
+        .getBacklinks(noteA.uri)
+        .map(link => link.source.path)
+        .sort()
+    ).toEqual(['/path/another/page-c.md', '/somewhere/page-b.md']);
+  });
+
+  it('should support attachments', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [
+        // wikilink with extension
+        { slug: 'attachment-a.pdf' },
+        // wikilink without extension
+        { slug: 'attachment-b' },
+      ],
+    });
+    const attachmentA = createTestNote({
+      uri: '/path/to/more/attachment-a.pdf',
+    });
+    const attachmentB = createTestNote({
+      uri: '/path/to/more/attachment-b.pdf',
+    });
+    const ws = createTestWorkspace();
+    ws.set(noteA)
+      .set(attachmentA)
+      .set(attachmentB);
+    const graph = FoamGraph.fromWorkspace(ws);
+
+    expect(graph.getBacklinks(attachmentA.uri).map(l => l.source)).toEqual([
+      noteA.uri,
+    ]);
+    // Attachments require extension
+    expect(graph.getBacklinks(attachmentB.uri).map(l => l.source)).toEqual([]);
+  });
+
+  it('should resolve conflicts alphabetically - part 1', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ slug: 'attachment-a.pdf' }],
+    });
+    const attachmentA = createTestNote({
+      uri: '/path/to/more/attachment-a.pdf',
+    });
+    const attachmentABis = createTestNote({
+      uri: '/path/to/attachment-a.pdf',
+    });
+    const ws = createTestWorkspace();
+    ws.set(noteA)
+      .set(attachmentA)
+      .set(attachmentABis);
+    const graph = FoamGraph.fromWorkspace(ws);
+
+    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([
+      attachmentABis.uri,
+    ]);
+  });
+
+  it('should resolve conflicts alphabetically - part 2', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ slug: 'attachment-a.pdf' }],
+    });
+    const attachmentA = createTestNote({
+      uri: '/path/to/more/attachment-a.pdf',
+    });
+    const attachmentABis = createTestNote({
+      uri: '/path/to/attachment-a.pdf',
+    });
+    const ws = createTestWorkspace();
+    ws.set(noteA)
+      .set(attachmentABis)
+      .set(attachmentA);
+    const graph = FoamGraph.fromWorkspace(ws);
+
+    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([
+      attachmentABis.uri,
+    ]);
+  });
+});
+
+describe('Placeholders', () => {
+  it('should treat direct links to non-existing files as placeholders', () => {
+    const ws = createTestWorkspace();
+    const noteA = createTestNote({
+      uri: '/somewhere/from/page-a.md',
+      links: [{ to: '../page-b.md' }, { to: '/path/to/page-c.md' }],
+    });
+    ws.set(noteA);
+    const graph = FoamGraph.fromWorkspace(ws);
+
+    expect(graph.getAllConnections()[0]).toEqual({
+      source: noteA.uri,
+      target: URI.placeholder('/somewhere/page-b.md'),
+      link: expect.objectContaining({ type: 'link' }),
+    });
+    expect(graph.getAllConnections()[1]).toEqual({
+      source: noteA.uri,
+      target: URI.placeholder('/path/to/page-c.md'),
+      link: expect.objectContaining({ type: 'link' }),
+    });
+  });
+
+  it('should treat wikilinks without matching file as placeholders', () => {
+    const ws = createTestWorkspace();
+    const noteA = createTestNote({
+      uri: '/somewhere/page-a.md',
+      links: [{ slug: 'page-b' }],
+    });
+    ws.set(noteA);
+    const graph = FoamGraph.fromWorkspace(ws);
+
+    expect(graph.getAllConnections()[0]).toEqual({
+      source: noteA.uri,
+      target: URI.placeholder('page-b'),
+      link: expect.objectContaining({ type: 'wikilink' }),
+    });
+  });
+
+  it('should treat wikilink with definition to non-existing file as placeholders', () => {
+    const ws = createTestWorkspace();
+    const noteA = createTestNote({
+      uri: '/somewhere/page-a.md',
+      links: [{ slug: 'page-b' }, { slug: 'page-c' }],
+    });
+    noteA.definitions.push({
+      label: 'page-b',
+      url: './page-b.md',
+    });
+    noteA.definitions.push({
+      label: 'page-c',
+      url: '/path/to/page-c.md',
+    });
+    ws.set(noteA).set(
+      createTestNote({ uri: '/different/location/for/note-b.md' })
+    );
+    const graph = FoamGraph.fromWorkspace(ws);
+
+    expect(graph.getAllConnections()[0]).toEqual({
+      source: noteA.uri,
+      target: URI.placeholder('/somewhere/page-b.md'),
+      link: expect.objectContaining({ type: 'wikilink' }),
+    });
+    expect(graph.getAllConnections()[1]).toEqual({
+      source: noteA.uri,
+      target: URI.placeholder('/path/to/page-c.md'),
+      link: expect.objectContaining({ type: 'wikilink' }),
+    });
+  });
+
+  it('should work with a placeholder named like a JS prototype property', () => {
+    const ws = createTestWorkspace();
+    const noteA = createTestNote({
+      uri: '/page-a.md',
+      links: [{ slug: 'constructor' }],
+    });
+    ws.set(noteA);
+    const graph = FoamGraph.fromWorkspace(ws);
+
+    expect(
+      graph
+        .getAllNodes()
+        .map(uri => uri.path)
+        .sort()
+    ).toEqual(['/page-a.md', 'constructor']);
+  });
+});
+
+describe('Regenerating graph after workspace changes', () => {
+  it('should update links when modifying a resource', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ slug: 'page-b' }],
+    });
+    const noteB = createTestNote({
+      uri: '/path/to/another/page-b.md',
+      links: [{ slug: 'page-c' }],
+    });
+    const noteC = createTestNote({
+      uri: '/path/to/more/page-c.md',
+    });
+    const ws = createTestWorkspace();
+    ws.set(noteA)
+      .set(noteB)
+      .set(noteC);
+    let graph = FoamGraph.fromWorkspace(ws);
+
+    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteB.uri]);
+    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([
+      noteA.uri,
+    ]);
+    expect(graph.getBacklinks(noteC.uri).map(l => l.source)).toEqual([
+      noteB.uri,
+    ]);
+
+    // update the note
+    const noteABis = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ slug: 'page-c' }],
+    });
+    ws.set(noteABis);
+    // change is not propagated immediately
+    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteB.uri]);
+    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([
+      noteA.uri,
+    ]);
+    expect(graph.getBacklinks(noteC.uri).map(l => l.source)).toEqual([
+      noteB.uri,
+    ]);
+
+    // recompute the links
+    graph = FoamGraph.fromWorkspace(ws);
+    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteC.uri]);
+    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([]);
+    expect(
+      graph
+        .getBacklinks(noteC.uri)
+        .map(link => link.source.path)
+        .sort()
+    ).toEqual(['/path/to/another/page-b.md', '/path/to/page-a.md']);
+    graph.dispose();
+    ws.dispose();
+  });
+
+  it('should produce a placeholder for wikilinks pointing to a removed resource', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ slug: 'page-b' }],
+    });
+    const noteB = createTestNote({
+      uri: '/path/to/another/page-b.md',
+    });
+    const ws = createTestWorkspace();
+    ws.set(noteA).set(noteB);
+    const graph = FoamGraph.fromWorkspace(ws);
+
+    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteB.uri]);
+    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([
+      noteA.uri,
+    ]);
+    expect(ws.get(noteB.uri).type).toEqual('note');
+
+    // remove note-b
+    ws.delete(noteB.uri);
+    const graph2 = FoamGraph.fromWorkspace(ws);
+
+    expect(() => ws.get(noteB.uri)).toThrow();
+    expect(graph2.contains(URI.placeholder('page-b'))).toBeTruthy();
+  });
+
+  it('should turn a placeholder into a connection when adding a resource matching a wikilink', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ slug: 'page-b' }],
+    });
+    const ws = createTestWorkspace();
+    ws.set(noteA);
+    const graph = FoamGraph.fromWorkspace(ws);
+
+    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([
+      URI.placeholder('page-b'),
+    ]);
+    expect(graph.contains(URI.placeholder('page-b'))).toBeTruthy();
+
+    // add note-b
+    const noteB = createTestNote({
+      uri: '/path/to/another/page-b.md',
+    });
+
+    ws.set(noteB);
+    FoamGraph.fromWorkspace(ws);
+
+    expect(() => ws.get(URI.placeholder('page-b'))).toThrow();
+    expect(ws.get(noteB.uri).type).toEqual('note');
+  });
+
+  it('should produce a placeholder for direct links pointing to a removed resource', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ to: '/path/to/another/page-b.md' }],
+    });
+    const noteB = createTestNote({
+      uri: '/path/to/another/page-b.md',
+    });
+    const ws = createTestWorkspace();
+    ws.set(noteA).set(noteB);
+    const graph = FoamGraph.fromWorkspace(ws);
+
+    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteB.uri]);
+    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([
+      noteA.uri,
+    ]);
+    expect(ws.get(noteB.uri).type).toEqual('note');
+
+    // remove note-b
+    ws.delete(noteB.uri);
+    const graph2 = FoamGraph.fromWorkspace(ws);
+
+    expect(() => ws.get(noteB.uri)).toThrow();
+    expect(
+      graph2.contains(URI.placeholder('/path/to/another/page-b.md'))
+    ).toBeTruthy();
+  });
+
+  it('should turn a placeholder into a connection when adding a resource matching a direct link', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ to: '/path/to/another/page-b.md' }],
+    });
+    const ws = createTestWorkspace();
+    ws.set(noteA);
+    const graph = FoamGraph.fromWorkspace(ws);
+
+    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([
+      URI.placeholder('/path/to/another/page-b.md'),
+    ]);
+    expect(() =>
+      ws.get(URI.placeholder('/path/to/another/page-b.md'))
+    ).toThrow();
+
+    // add note-b
+    const noteB = createTestNote({
+      uri: '/path/to/another/page-b.md',
+    });
+
+    ws.set(noteB);
+    FoamGraph.fromWorkspace(ws);
+
+    expect(() => ws.get(URI.placeholder('page-b'))).toThrow();
+    expect(ws.get(noteB.uri).type).toEqual('note');
+  });
+
+  it('should remove the placeholder from graph when removing all links to it', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ to: '/path/to/another/page-b.md' }],
+    });
+    const ws = createTestWorkspace().set(noteA);
+    const graph = FoamGraph.fromWorkspace(ws);
+    expect(
+      graph.contains(URI.placeholder('/path/to/another/page-b.md'))
+    ).toBeTruthy();
+
+    // update the note
+    const noteABis = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [],
+    });
+    ws.set(noteABis);
+    const graph2 = FoamGraph.fromWorkspace(ws);
+
+    expect(
+      graph2.contains(URI.placeholder('/path/to/another/page-b.md'))
+    ).toBeFalsy();
+  });
+});
+
+describe('Updating graph on workspace state', () => {
+  it('should automatically update the links when modifying a resource', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ slug: 'page-b' }],
+    });
+    const noteB = createTestNote({
+      uri: '/path/to/another/page-b.md',
+      links: [{ slug: 'page-c' }],
+    });
+    const noteC = createTestNote({
+      uri: '/path/to/more/page-c.md',
+    });
+    const ws = createTestWorkspace();
+    ws.set(noteA)
+      .set(noteB)
+      .set(noteC);
+    const graph = FoamGraph.fromWorkspace(ws, true);
+
+    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteB.uri]);
+    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([
+      noteA.uri,
+    ]);
+    expect(graph.getBacklinks(noteC.uri).map(l => l.source)).toEqual([
+      noteB.uri,
+    ]);
+
+    // update the note
+    const noteABis = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ slug: 'page-c' }],
+    });
+    ws.set(noteABis);
+
+    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteC.uri]);
+    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([]);
+    expect(
+      graph
+        .getBacklinks(noteC.uri)
+        .map(link => link.source.path)
+        .sort()
+    ).toEqual(['/path/to/another/page-b.md', '/path/to/page-a.md']);
+    ws.dispose();
+    graph.dispose();
+  });
+
+  it('should produce a placeholder for wikilinks pointing to a removed resource', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ slug: 'page-b' }],
+    });
+    const noteB = createTestNote({
+      uri: '/path/to/another/page-b.md',
+    });
+    const ws = createTestWorkspace();
+    ws.set(noteA).set(noteB);
+    const graph = FoamGraph.fromWorkspace(ws, true);
+
+    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteB.uri]);
+    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([
+      noteA.uri,
+    ]);
+    expect(ws.get(noteB.uri).type).toEqual('note');
+
+    // remove note-b
+    ws.delete(noteB.uri);
+
+    expect(() => ws.get(noteB.uri)).toThrow();
+    ws.dispose();
+    graph.dispose();
+  });
+
+  it('should turn a placeholder into a connection when adding a resource matching a wikilink', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ slug: 'page-b' }],
+    });
+    const ws = createTestWorkspace();
+    ws.set(noteA);
+    const graph = FoamGraph.fromWorkspace(ws, true);
+
+    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([
+      URI.placeholder('page-b'),
+    ]);
+
+    // add note-b
+    const noteB = createTestNote({
+      uri: '/path/to/another/page-b.md',
+    });
+
+    ws.set(noteB);
+
+    expect(() => ws.get(URI.placeholder('page-b'))).toThrow();
+    expect(ws.get(noteB.uri).type).toEqual('note');
+    ws.dispose();
+    graph.dispose();
+  });
+
+  it('should produce a placeholder for direct links pointing to a removed resource', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ to: '/path/to/another/page-b.md' }],
+    });
+    const noteB = createTestNote({
+      uri: '/path/to/another/page-b.md',
+    });
+    const ws = createTestWorkspace();
+    ws.set(noteA).set(noteB);
+    const graph = FoamGraph.fromWorkspace(ws, true);
+
+    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteB.uri]);
+    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([
+      noteA.uri,
+    ]);
+    expect(ws.get(noteB.uri).type).toEqual('note');
+
+    // remove note-b
+    ws.delete(noteB.uri);
+
+    expect(() => ws.get(noteB.uri)).toThrow();
+    expect(
+      graph.contains(URI.placeholder('/path/to/another/page-b.md'))
+    ).toBeTruthy();
+    ws.dispose();
+    graph.dispose();
+  });
+
+  it('should turn a placeholder into a connection when adding a resource matching a direct link', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ to: '/path/to/another/page-b.md' }],
+    });
+    const ws = createTestWorkspace();
+    ws.set(noteA);
+    const graph = FoamGraph.fromWorkspace(ws, true);
+
+    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([
+      URI.placeholder('/path/to/another/page-b.md'),
+    ]);
+    expect(
+      graph.contains(URI.placeholder('/path/to/another/page-b.md'))
+    ).toBeTruthy();
+
+    // add note-b
+    const noteB = createTestNote({
+      uri: '/path/to/another/page-b.md',
+    });
+
+    ws.set(noteB);
+
+    expect(() => ws.get(URI.placeholder('page-b'))).toThrow();
+    expect(ws.get(noteB.uri).type).toEqual('note');
+    ws.dispose();
+    graph.dispose();
+  });
+
+  it('should remove the placeholder from graph when removing all links to it', () => {
+    const noteA = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [{ to: '/path/to/another/page-b.md' }],
+    });
+    const ws = createTestWorkspace();
+    ws.set(noteA);
+    const graph = FoamGraph.fromWorkspace(ws, true);
+    expect(
+      graph.contains(URI.placeholder('/path/to/another/page-b.md'))
+    ).toBeTruthy();
+
+    // update the note
+    const noteABis = createTestNote({
+      uri: '/path/to/page-a.md',
+      links: [],
+    });
+    ws.set(noteABis);
+    expect(
+      graph.contains(URI.placeholder('/path/to/another/page-b.md'))
+    ).toBeFalsy();
+    ws.dispose();
+    graph.dispose();
+  });
+});

packages/foam-vscode/src/core/model/graph.ts

@@ -76,9 +76,9 @@ export class FoamGraph implements IDisposable {
    */
   public static fromWorkspace(
     workspace: FoamWorkspace,
-    keepMonitoring: boolean = false
+    keepMonitoring = false
   ): FoamGraph {
-    let graph = new FoamGraph(workspace);
+    const graph = new FoamGraph(workspace);
 
     workspace.list().forEach(resource => graph.resolveResource(resource));
     if (keepMonitoring) {
@@ -99,15 +99,18 @@ export class FoamGraph implements IDisposable {
 
   private updateLinksRelatedToAddedResource(resource: Resource) {
     // check if any existing connection can be filled by new resource
-    let resourcesToUpdate: Resource[] = [];
+    const resourcesToUpdate: URI[] = [];
     for (const placeholderId of this.placeholders.keys()) {
       // quick and dirty check for affected resources
       if (resource.uri.path.endsWith(placeholderId + '.md')) {
-        resourcesToUpdate.push(resource);
+        resourcesToUpdate.push(
+          ...this.backlinks.get(placeholderId).map(c => c.source)
+        );
+        // resourcesToUpdate.push(resource);
       }
     }
     resourcesToUpdate.forEach(res =>
-      this.resolveResource(this.workspace.get(res.uri))
+      this.resolveResource(this.workspace.get(res))
     );
     // resolve the resource
     this.resolveResource(resource);
@@ -170,7 +173,7 @@ export class FoamGraph implements IDisposable {
 
     this.backlinks.get(target.path)?.push(connection);
 
-    if (URI.isPlaceholder(target)) {
+    if (target.isPlaceholder()) {
       this.placeholders.set(uriToPlaceholderId(target), target);
     }
     return this;
@@ -190,7 +193,7 @@ export class FoamGraph implements IDisposable {
     const connectionsToKeep =
       link === true
         ? (c: Connection) =>
-            !URI.isEqual(source, c.source) || !URI.isEqual(target, c.target)
+            !source.isEqual(c.source) || !target.isEqual(c.target)
         : (c: Connection) => !isSameConnection({ source, target, link }, c);
 
     this.links.set(
@@ -206,7 +209,7 @@ export class FoamGraph implements IDisposable {
     );
     if (this.backlinks.get(target.path)?.length === 0) {
       this.backlinks.delete(target.path);
-      if (URI.isPlaceholder(target)) {
+      if (target.isPlaceholder()) {
         this.placeholders.delete(uriToPlaceholderId(target));
       }
     }
@@ -232,8 +235,8 @@ export class FoamGraph implements IDisposable {
 // TODO move these utility fns to appropriate places
 
 const isSameConnection = (a: Connection, b: Connection) =>
-  URI.isEqual(a.source, b.source) &&
-  URI.isEqual(a.target, b.target) &&
+  a.source.isEqual(b.source) &&
+  a.target.isEqual(b.target) &&
   isSameLink(a.link, b.link);
 
 const isSameLink = (a: ResourceLink, b: ResourceLink) =>

packages/foam-vscode/src/core/model/note.ts

@@ -9,23 +9,14 @@ export interface NoteSource {
   eol: string;
 }
 
-export interface WikiLink {
-  type: 'wikilink';
+export interface ResourceLink {
+  type: 'wikilink' | 'link';
   target: string;
   label: string;
   rawText: string;
   range: Range;
 }
 
-export interface DirectLink {
-  type: 'link';
-  label: string;
-  target: string;
-  range: Range;
-}
-
-export type ResourceLink = WikiLink | DirectLink;
-
 export interface NoteLinkDefinition {
   label: string;
   url: string;
@@ -38,12 +29,17 @@ export interface Tag {
   range: Range;
 }
 
+export interface Section {
+  label: string;
+  range: Range;
+}
+
 export interface Resource {
   uri: URI;
   type: string;
   title: string;
   properties: any;
-  // sections: NoteSection[]
+  sections: Section[];
   tags: Tag[];
   links: ResourceLink[];
 
@@ -66,7 +62,7 @@ export abstract class Resource {
       return false;
     }
     return (
-      URI.isUri((thing as Resource).uri) &&
+      (thing as Resource).uri instanceof URI &&
       typeof (thing as Resource).title === 'string' &&
       typeof (thing as Resource).type === 'string' &&
       typeof (thing as Resource).properties === 'object' &&
@@ -74,4 +70,11 @@ export abstract class Resource {
       typeof (thing as Resource).links === 'object'
     );
   }
+
+  public static findSection(resource: Resource, label: string): Section | null {
+    if (label) {
+      return resource.sections.find(s => s.label === label) ?? null;
+    }
+    return null;
+  }
 }

packages/foam-vscode/src/core/model/tags.ts

@@ -20,9 +20,9 @@ export class FoamTags implements IDisposable {
    */
   public static fromWorkspace(
     workspace: FoamWorkspace,
-    keepMonitoring: boolean = false
+    keepMonitoring = false
   ): FoamTags {
-    let tags = new FoamTags();
+    const tags = new FoamTags();
 
     workspace
       .list()
@@ -68,7 +68,7 @@ export class FoamTags implements IDisposable {
       if (this.tags.has(tag)) {
         const remainingLocations = this.tags
           .get(tag)
-          ?.filter(uri => !URI.isEqual(uri, resource.uri));
+          ?.filter(uri => !uri.isEqual(resource.uri));
 
         if (remainingLocations && remainingLocations.length > 0) {
           this.tags.set(tag, remainingLocations);

packages/foam-vscode/src/core/model/uri.test.ts

@@ -1,5 +1,4 @@
 import { Logger } from '../utils/log';
-import { uriToSlug } from '../utils/slug';
 import { URI } from './uri';
 
 Logger.setLevel('error');
@@ -11,13 +10,13 @@ describe('Foam URI', () => {
       ['https://www.google.com', URI.parse('https://www.google.com')],
       ['/path/to/a/file.md', URI.file('/path/to/a/file.md')],
       ['../relative/file.md', URI.file('/path/relative/file.md')],
-      ['#section', URI.create({ ...base, fragment: 'section' })],
+      ['#section', base.withFragment('section')],
       [
         '../relative/file.md#section',
         URI.parse('file:/path/relative/file.md#section'),
       ],
     ])('URI Parsing (%s)', (input, exp) => {
-      const result = URI.resolve(input, base);
+      const result = base.resolve(input);
       expect(result.scheme).toEqual(exp.scheme);
       expect(result.authority).toEqual(exp.authority);
       expect(result.path).toEqual(exp.path);
@@ -30,8 +29,8 @@ describe('Foam URI', () => {
       const lowerCase = URI.parse('file:///c:/this/is/a/Path');
       expect(upperCase.path).toEqual('/C:/this/is/a/Path');
       expect(lowerCase.path).toEqual('/C:/this/is/a/Path');
-      expect(URI.toFsPath(upperCase)).toEqual('C:\\this\\is\\a\\Path');
-      expect(URI.toFsPath(lowerCase)).toEqual('C:\\this\\is\\a\\Path');
+      expect(upperCase.toFsPath()).toEqual('C:\\this\\is\\a\\Path');
+      expect(lowerCase.toFsPath()).toEqual('C:\\this\\is\\a\\Path');
     });
 
     it('consistently parses file paths', () => {
@@ -48,13 +47,13 @@ describe('Foam URI', () => {
       const winUri = URI.file('c:\\this\\is\\a\\path');
       const unixUri = URI.file('/this/is/a/path');
       expect(winUri).toEqual(
-        URI.create({
+        new URI({
           scheme: 'file',
           path: '/C:/this/is/a/path',
         })
       );
       expect(unixUri).toEqual(
-        URI.create({
+        new URI({
           scheme: 'file',
           path: '/this/is/a/path',
         })
@@ -63,26 +62,14 @@ describe('Foam URI', () => {
   });
 
   it('supports computing relative paths', () => {
-    expect(
-      URI.computeRelativeURI(URI.file('/my/file.md'), '../hello.md')
-    ).toEqual(URI.file('/hello.md'));
-    expect(URI.computeRelativeURI(URI.file('/my/file.md'), '../hello')).toEqual(
+    expect(URI.file('/my/file.md').resolve('../hello.md')).toEqual(
       URI.file('/hello.md')
     );
-    expect(
-      URI.computeRelativeURI(URI.file('/my/file.markdown'), '../hello')
-    ).toEqual(URI.file('/hello.markdown'));
-  });
-
-  it('can be slugified', () => {
-    expect(uriToSlug(URI.file('/this/is/a/path.md'))).toEqual('path');
-    expect(uriToSlug(URI.file('../a/relative/path.md'))).toEqual('path');
-    expect(uriToSlug(URI.file('another/relative/path.md'))).toEqual('path');
-    expect(uriToSlug(URI.file('no-directory.markdown'))).toEqual(
-      'no-directory'
+    expect(URI.file('/my/file.md').resolve('../hello')).toEqual(
+      URI.file('/hello.md')
     );
-    expect(uriToSlug(URI.file('many.dots.name.markdown'))).toEqual(
-      'manydotsname'
+    expect(URI.file('/my/file.markdown').resolve('../hello')).toEqual(
+      URI.file('/hello.markdown')
     );
   });
 });

packages/foam-vscode/src/core/model/uri.ts

@@ -4,8 +4,8 @@
 // Some code in this file comes from https://github.com/microsoft/vscode/main/src/vs/base/common/uri.ts
 // See LICENSE for details
 
-import * as paths from 'path';
 import { CharCode } from '../common/charCode';
+import * as pathUtils from '../utils/path';
 
 /**
  * Uniform Resource Identifier (URI) http://tools.ietf.org/html/rfc3986.
@@ -23,248 +23,141 @@ import { CharCode } from '../common/charCode';
  *       urn:example:animal:ferret:nose
  * ```
  */
-export interface URI {
-  scheme: string;
-  authority: string;
-  path: string;
-  query: string;
-  fragment: string;
-}
 
-const { posix } = paths;
 const _empty = '';
 const _slash = '/';
 const _regexp = /^(([^:/?#]{2,}?):)?(\/\/([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?/;
 
-export abstract class URI {
-  static create(from: Partial<URI>): URI {
-    // When using this method we assume the path is already posix
-    // so we don't check whether it's a Windows path, nor we do any
-    // conversion
-    return {
-      scheme: from.scheme ?? _empty,
-      authority: from.authority ?? _empty,
-      path: from.path ?? _empty,
-      query: from.query ?? _empty,
-      fragment: from.fragment ?? _empty,
-    };
+export class URI {
+  readonly scheme: string;
+  readonly authority: string;
+  readonly path: string;
+  readonly query: string;
+  readonly fragment: string;
+
+  constructor(from: Partial<URI> = {}) {
+    this.scheme = from.scheme ?? _empty;
+    this.authority = from.authority ?? _empty;
+    this.path = from.path ?? _empty; // We assume the path is already posix
+    this.query = from.query ?? _empty;
+    this.fragment = from.fragment ?? _empty;
   }
 
   static parse(value: string): URI {
     const match = _regexp.exec(value);
     if (!match) {
-      return URI.create({});
+      return new URI();
     }
-    let path = percentDecode(match[5] ?? _empty);
-    if (URI.isWindowsPath(path)) {
-      path = windowsPathToUriPath(path);
-    }
-    return URI.create({
+    return new URI({
       scheme: match[2] || 'file',
       authority: percentDecode(match[4] ?? _empty),
-      path: path,
+      path: pathUtils.fromFsPath(percentDecode(match[5] ?? _empty))[0],
       query: percentDecode(match[7] ?? _empty),
       fragment: percentDecode(match[9] ?? _empty),
     });
   }
 
-  /**
-   * Parses a URI from value, taking into consideration possible relative paths.
-   *
-   * @param reference the URI to use as reference in case value is a relative path
-   * @param value the value to parse for a URI
-   * @returns the URI from the given value. In case of a relative path, the URI will take into account
-   * the reference from which it is computed
-   */
-  static resolve(value: string, reference: URI): URI {
-    let uri = URI.parse(value);
-    if (uri.scheme === 'file' && !value.startsWith('/')) {
-      const [path, fragment] = value.split('#');
-      uri =
-        path.length > 0 ? URI.computeRelativeURI(reference, path) : reference;
-      if (fragment) {
-        uri = URI.create({
-          ...uri,
-          fragment: fragment,
-        });
+  static file(value: string): URI {
+    const [path, authority] = pathUtils.fromFsPath(value);
+    return new URI({ scheme: 'file', authority, path });
+  }
+
+  static placeholder(path: string): URI {
+    return new URI({ scheme: 'placeholder', path: path });
+  }
+
+  resolve(value: string | URI, isDirectory = false): URI {
+    const uri = value instanceof URI ? value : URI.parse(value);
+    if (!uri.isAbsolute()) {
+      if (uri.scheme === 'file' || uri.scheme === 'placeholder') {
+        let newUri = this.withFragment(uri.fragment);
+        if (uri.path) {
+          newUri = (isDirectory ? newUri : newUri.getDirectory())
+            .joinPath(uri.path)
+            .changeExtension('', this.getExtension());
+        }
+        return newUri;
       }
     }
     return uri;
   }
 
-  static computeRelativeURI(reference: URI, relativeSlug: string): URI {
-    // if no extension is provided, use the same extension as the source file
-    const slug =
-      posix.extname(relativeSlug) !== ''
-        ? relativeSlug
-        : `${relativeSlug}${posix.extname(reference.path)}`;
-    return URI.create({
-      ...reference,
-      path: posix.join(posix.dirname(reference.path), slug),
-    });
+  isAbsolute(): boolean {
+    return pathUtils.isAbsolute(this.path);
   }
 
-  static file(path: string): URI {
-    let authority = _empty;
-
-    // normalize to fwd-slashes on windows,
-    // on other systems bwd-slashes are valid
-    // filename character, eg /f\oo/ba\r.txt
-    if (URI.isWindowsPath(path)) {
-      path = windowsPathToUriPath(path);
-    }
-
-    // check for authority as used in UNC shares
-    // or use the path as given
-    if (path[0] === _slash && path[1] === _slash) {
-      const idx = path.indexOf(_slash, 2);
-      if (idx === -1) {
-        authority = path.substring(2);
-        path = _slash;
-      } else {
-        authority = path.substring(2, idx);
-        path = path.substring(idx) || _slash;
-      }
-    }
-
-    return URI.create({ scheme: 'file', authority, path });
+  getDirectory(): URI {
+    const path = pathUtils.getDirectory(this.path);
+    return new URI({ ...this, path });
   }
 
-  static placeholder(key: string): URI {
-    return URI.create({
-      scheme: 'placeholder',
-      path: key,
-    });
+  getBasename(): string {
+    return pathUtils.getBasename(this.path);
   }
 
-  static relativePath(source: URI, target: URI): string {
-    const relativePath = posix.relative(
-      posix.dirname(source.path),
-      target.path
-    );
-    return relativePath;
+  getName(): string {
+    return pathUtils.getName(this.path);
   }
 
-  static getBasename(uri: URI) {
-    return posix.parse(uri.path).name;
+  getExtension(): string {
+    return pathUtils.getExtension(this.path);
   }
 
-  static getDir(uri: URI) {
-    return URI.file(posix.dirname(uri.path));
+  changeExtension(from: string, to: string): URI {
+    const path = pathUtils.changeExtension(this.path, from, to);
+    return new URI({ ...this, path });
   }
 
-  static getFileNameWithoutExtension(uri: URI) {
-    return URI.getBasename(uri).replace(/\.[^.]+$/, '');
+  joinPath(...paths: string[]) {
+    const path = pathUtils.joinPath(this.path, ...paths);
+    return new URI({ ...this, path });
+  }
+
+  relativeTo(uri: URI) {
+    const path = pathUtils.relativeTo(this.path, uri.path);
+    return new URI({ ...this, path });
+  }
+
+  withFragment(fragment: string): URI {
+    return new URI({ ...this, fragment });
   }
 
   /**
-   * Uses a placeholder URI, and a reference directory, to generate
-   * the URI of the corresponding resource
-   *
-   * @param placeholderUri the placeholder URI
-   * @param basedir the dir to be used as reference
-   * @returns the target resource URI
+   * Returns a URI without the fragment and query information
    */
-  static createResourceUriFromPlaceholder(
-    basedir: URI,
-    placeholderUri: URI
-  ): URI {
-    const tokens = placeholderUri.path.split('/');
-    const path = tokens.slice(0, -1);
-    const filename = tokens.slice(-1);
-    return URI.joinPath(basedir, ...path, `${filename}.md`);
+  asPlain(): URI {
+    return new URI({ ...this, fragment: '', query: '' });
   }
 
-  /**
-   * Join a URI path with path fragments and normalizes the resulting path.
-   *
-   * @param uri The input URI.
-   * @param pathFragment The path fragment to add to the URI path.
-   * @returns The resulting URI.
-   */
-  static joinPath(uri: URI, ...pathFragment: string[]): URI {
-    if (!uri.path) {
-      throw new Error(`[UriError]: cannot call joinPath on URI without path`);
-    }
-    let newPath: string;
-    if (URI.isWindowsPath(uri.path) && uri.scheme === 'file') {
-      newPath = URI.file(paths.win32.join(URI.toFsPath(uri), ...pathFragment))
-        .path;
-    } else {
-      newPath = paths.posix.join(uri.path, ...pathFragment);
-    }
-    return URI.create({ ...uri, path: newPath });
+  isPlaceholder(): boolean {
+    return this.scheme === 'placeholder';
   }
 
-  static toFsPath(uri: URI): string {
-    let value: string;
-    if (uri.authority && uri.path.length > 1 && uri.scheme === 'file') {
-      // unc path: file://shares/c$/far/boo
-      value = `//${uri.authority}${uri.path}`;
-    } else if (
-      uri.path.charCodeAt(0) === CharCode.Slash &&
-      ((uri.path.charCodeAt(1) >= CharCode.A &&
-        uri.path.charCodeAt(1) <= CharCode.Z) ||
-        (uri.path.charCodeAt(1) >= CharCode.a &&
-          uri.path.charCodeAt(1) <= CharCode.z)) &&
-      uri.path.charCodeAt(2) === CharCode.Colon
-    ) {
-      // windows drive letter: file:///C:/far/boo
-      value = uri.path[1].toUpperCase() + uri.path.substr(2);
-    } else {
-      // other path
-      value = uri.path;
-    }
-    if (URI.isWindowsPath(value)) {
-      value = value.replace(/\//g, '\\');
-    }
-    return value;
-  }
-
-  static toString(uri: URI): string {
-    return encode(uri, false);
-  }
-
-  // --- utility
-
-  static isWindowsPath(path: string) {
-    return (
-      (path.length >= 2 && path.charCodeAt(1) === CharCode.Colon) ||
-      (path.length >= 3 &&
-        path.charCodeAt(0) === CharCode.Slash &&
-        path.charCodeAt(2) === CharCode.Colon)
+  toFsPath() {
+    return pathUtils.toFsPath(
+      this.path,
+      this.scheme === 'file' ? this.authority : ''
     );
   }
 
-  static isUri(thing: any): thing is URI {
-    if (!thing) {
-      return false;
-    }
-    return (
-      typeof (thing as URI).authority === 'string' &&
-      typeof (thing as URI).fragment === 'string' &&
-      typeof (thing as URI).path === 'string' &&
-      typeof (thing as URI).query === 'string' &&
-      typeof (thing as URI).scheme === 'string'
-    );
+  toString(): string {
+    return encode(this, false);
   }
 
-  static isPlaceholder(uri: URI): boolean {
-    return uri.scheme === 'placeholder';
+  isMarkdown(): boolean {
+    const ext = this.getExtension();
+    return ext === '.md' || ext === '.markdown';
   }
 
-  static isEqual(a: URI, b: URI): boolean {
+  isEqual(uri: URI): boolean {
     return (
-      a.authority === b.authority &&
-      a.scheme === b.scheme &&
-      a.path === b.path &&
-      a.fragment === b.fragment &&
-      a.query === b.query
+      this.authority === uri.authority &&
+      this.scheme === uri.scheme &&
+      this.path === uri.path &&
+      this.fragment === uri.fragment &&
+      this.query === uri.query
     );
   }
-  static isMarkdownFile(uri: URI): boolean {
-    return uri.path.endsWith('.md');
-  }
 }
 
 // --- encode / decode
@@ -292,33 +185,6 @@ function percentDecode(str: string): string {
   );
 }
 
-/**
- * Converts a windows-like path to standard URI path
- * - Normalize the Windows drive letter to upper case
- * - replace \ with /
- * - always start with /
- *
- * see https://github.com/foambubble/foam/issues/813
- * see https://github.com/microsoft/vscode/issues/43959
- * see https://github.com/microsoft/vscode/issues/116298
- *
- * @param path the path to convert
- * @returns the URI compatible path
- */
-function windowsPathToUriPath(path: string): string {
-  path = path.charCodeAt(0) === CharCode.Slash ? path : `/${path}`;
-  path = path.replace(/\\/g, _slash);
-  const code = path.charCodeAt(1);
-  if (
-    path.charCodeAt(2) === CharCode.Colon &&
-    code >= CharCode.a &&
-    code <= CharCode.z
-  ) {
-    path = `/${String.fromCharCode(code - 32)}:${path.substr(3)}`; // "/C:".length === 3
-  }
-  return path;
-}
-
 /**
  * Create the external version of a uri
  */
@@ -328,6 +194,7 @@ function encode(uri: URI, skipEncoding: boolean): string {
     : encodeURIComponentMinimal;
 
   let res = '';
+  // eslint-disable-next-line prefer-const
   let { scheme, authority, path, query, fragment } = uri;
   if (scheme) {
     res += scheme;

packages/foam-vscode/src/core/model/workspace.test.ts

@@ -1,31 +1,12 @@
-import { FoamWorkspace, getReferenceType } from './workspace';
-import { FoamGraph } from './graph';
+import { FoamWorkspace } from './workspace';
 import { Logger } from '../utils/log';
 import { URI } from './uri';
 import { createTestNote, createTestWorkspace } from '../../test/test-utils';
 
 Logger.setLevel('error');
 
-describe('Reference types', () => {
-  it('Detects absolute references', () => {
-    expect(getReferenceType('/hello')).toEqual('absolute-path');
-    expect(getReferenceType('/hello/there')).toEqual('absolute-path');
-  });
-  it('Detects relative references', () => {
-    expect(getReferenceType('../hello')).toEqual('relative-path');
-    expect(getReferenceType('./hello')).toEqual('relative-path');
-    expect(getReferenceType('./hello/there')).toEqual('relative-path');
-  });
-  it('Detects key references', () => {
-    expect(getReferenceType('hello')).toEqual('key');
-  });
-  it('Detects URIs', () => {
-    expect(getReferenceType(URI.file('/path/to/file.md'))).toEqual('uri');
-  });
-});
-
 describe('Workspace resources', () => {
-  it('Adds notes to workspace', () => {
+  it('should allow adding notes to the workspace', () => {
     const ws = createTestWorkspace();
     ws.set(createTestNote({ uri: '/page-a.md' }));
     ws.set(createTestNote({ uri: '/page-b.md' }));
@@ -39,7 +20,7 @@ describe('Workspace resources', () => {
     ).toEqual(['/page-a.md', '/page-b.md', '/page-c.md']);
   });
 
-  it('Listing resources includes all notes', () => {
+  it('should includes all notes when listing resources', () => {
     const ws = createTestWorkspace();
     ws.set(createTestNote({ uri: '/page-a.md' }));
     ws.set(createTestNote({ uri: '/file.pdf' }));
@@ -52,7 +33,7 @@ describe('Workspace resources', () => {
     ).toEqual(['/file.pdf', '/page-a.md']);
   });
 
-  it('Fails if getting non-existing note', () => {
+  it('should fail when trying to get a non-existing note', () => {
     const noteA = createTestNote({
       uri: '/path/to/page-a.md',
     });
@@ -65,91 +46,46 @@ describe('Workspace resources', () => {
     expect(() => ws.get(uri)).toThrow();
   });
 
-  it('Should work with a resource named like a JS prototype property', () => {
+  it('should work with a resource named like a JS prototype property', () => {
     const ws = createTestWorkspace();
     const noteA = createTestNote({ uri: '/somewhere/constructor.md' });
     ws.set(noteA);
     expect(ws.list()).toEqual([noteA]);
   });
 
-  it('#851 - listing by ID should not return files with same suffix', () => {
+  it('should not return files with same suffix when listing by ID - #851', () => {
     const ws = createTestWorkspace()
       .set(createTestNote({ uri: 'test-file.md' }))
       .set(createTestNote({ uri: 'file.md' }));
-    expect(ws.listById('file').length).toEqual(1);
-  });
-});
-
-describe('Graph', () => {
-  it('contains notes and placeholders', () => {
-    const ws = createTestWorkspace();
-    ws.set(
-      createTestNote({
-        uri: '/page-a.md',
-        links: [{ slug: 'placeholder-link' }],
-      })
-    );
-    ws.set(createTestNote({ uri: '/file.pdf' }));
-
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(
-      graph
-        .getAllNodes()
-        .map(uri => uri.path)
-        .sort()
-    ).toEqual(['/file.pdf', '/page-a.md', 'placeholder-link']);
+    expect(ws.listByIdentifier('file').length).toEqual(1);
   });
 
-  it('Supports multiple connections between the same resources', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/note-a.md',
-    });
-    const noteB = createTestNote({
-      uri: '/note-b.md',
-      links: [{ to: noteA.uri.path }, { to: noteA.uri.path }],
-    });
+  it('should support dendron-style names', () => {
     const ws = createTestWorkspace()
-      .set(noteA)
-      .set(noteB);
-    const graph = FoamGraph.fromWorkspace(ws);
-    expect(graph.getBacklinks(noteA.uri)).toEqual([
-      {
-        source: noteB.uri,
-        target: noteA.uri,
-        link: expect.objectContaining({ type: 'link' }),
-      },
-      {
-        source: noteB.uri,
-        target: noteA.uri,
-        link: expect.objectContaining({ type: 'link' }),
-      },
-    ]);
+      .set(createTestNote({ uri: 'note.pdf' }))
+      .set(createTestNote({ uri: 'note.md' }))
+      .set(createTestNote({ uri: 'note.yo.md' }))
+      .set(createTestNote({ uri: 'note2.md' }));
+    for (const [reference, path] of [
+      ['note', '/note.md'],
+      ['note.md', '/note.md'],
+      ['note.yo', '/note.yo.md'],
+      ['note.yo.md', '/note.yo.md'],
+      ['note.pdf', '/note.pdf'],
+      ['note2', '/note2.md'],
+    ]) {
+      expect(ws.listByIdentifier(reference)[0].uri.path).toEqual(path);
+      expect(ws.find(reference).uri.path).toEqual(path);
+    }
   });
-  it('Supports removing a single link amongst several between two resources', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/note-a.md',
-    });
-    const noteB = createTestNote({
-      uri: '/note-b.md',
-      links: [{ to: noteA.uri.path }, { to: noteA.uri.path }],
-    });
+
+  it('should keep the fragment information when finding a resource', () => {
     const ws = createTestWorkspace()
-      .set(noteA)
-      .set(noteB);
-    const graph = FoamGraph.fromWorkspace(ws, true);
+      .set(createTestNote({ uri: 'test-file.md' }))
+      .set(createTestNote({ uri: 'file.md' }));
 
-    expect(graph.getBacklinks(noteA.uri).length).toEqual(2);
-
-    const noteBBis = createTestNote({
-      uri: '/note-b.md',
-      links: [{ to: noteA.uri.path }],
-    });
-    ws.set(noteBBis);
-    expect(graph.getBacklinks(noteA.uri).length).toEqual(1);
-
-    ws.dispose();
-    graph.dispose();
+    const res = ws.find('test-file#my-section');
+    expect(res.uri.fragment).toEqual('my-section');
   });
 });
 
@@ -173,770 +109,62 @@ describe('Identifier computation', () => {
     expect(ws.getIdentifier(second.uri)).toEqual('way/for/page-a');
     expect(ws.getIdentifier(third.uri)).toEqual('path/for/page-a');
   });
-});
 
-describe('Wikilinks', () => {
-  it('Can be defined with basename, relative path, absolute path, extension', () => {
-    const noteA = createTestNote({
+  it('should support sections in identifier computation', () => {
+    const first = createTestNote({
       uri: '/path/to/page-a.md',
-      links: [
-        // wikilink
-        { slug: 'page-b' },
-        // relative path wikilink
-        { slug: '../another/page-c.md' },
-        // absolute path wikilink
-        { slug: '/absolute/path/page-d' },
-        // wikilink with extension
-        { slug: 'page-e.md' },
-        // wikilink to placeholder
-        { slug: 'placeholder-test' },
-      ],
     });
-    const ws = createTestWorkspace()
-      .set(noteA)
-      .set(createTestNote({ uri: '/somewhere/page-b.md' }))
-      .set(createTestNote({ uri: '/path/another/page-c.md' }))
-      .set(createTestNote({ uri: '/absolute/path/page-d.md' }))
-      .set(createTestNote({ uri: '/absolute/path/page-e.md' }));
-    const graph = FoamGraph.fromWorkspace(ws);
+    const second = createTestNote({
+      uri: '/another/way/for/page-a.md',
+    });
+    const third = createTestNote({
+      uri: '/another/path/for/page-a.md',
+    });
+    const ws = new FoamWorkspace()
+      .set(first)
+      .set(second)
+      .set(third);
 
-    expect(
-      graph
-        .getLinks(noteA.uri)
-        .map(link => link.target.path)
-        .sort()
-    ).toEqual([
-      '/absolute/path/page-d.md',
-      '/absolute/path/page-e.md',
-      '/path/another/page-c.md',
-      '/somewhere/page-b.md',
-      'placeholder-test',
-    ]);
-  });
-
-  it('Creates inbound connections for target note', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ slug: 'page-b' }],
-    });
-    const ws = createTestWorkspace()
-      .set(noteA)
-      .set(
-        createTestNote({
-          uri: '/somewhere/page-b.md',
-          links: [{ slug: 'page-a' }],
-        })
-      )
-      .set(
-        createTestNote({
-          uri: '/path/another/page-c.md',
-          links: [{ slug: '/path/to/page-a' }],
-        })
-      )
-      .set(
-        createTestNote({
-          uri: '/absolute/path/page-d.md',
-          links: [{ slug: '../to/page-a.md' }],
-        })
-      );
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(
-      graph
-        .getBacklinks(noteA.uri)
-        .map(link => link.source.path)
-        .sort()
-    ).toEqual(['/path/another/page-c.md', '/somewhere/page-b.md']);
-  });
-
-  it('Uses wikilink definitions when available to resolve target', () => {
-    const ws = createTestWorkspace();
-    const noteA = createTestNote({
-      uri: '/somewhere/from/page-a.md',
-      links: [{ slug: 'page-b' }],
-    });
-    noteA.definitions.push({
-      label: 'page-b',
-      url: '../to/page-b.md',
-    });
-    const noteB = createTestNote({
-      uri: '/somewhere/to/page-b.md',
-    });
-    ws.set(noteA).set(noteB);
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(graph.getAllConnections()[0]).toEqual({
-      source: noteA.uri,
-      target: noteB.uri,
-      link: expect.objectContaining({ type: 'wikilink', label: 'page-b' }),
-    });
-  });
-
-  it('Resolves wikilink referencing more than one note', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ slug: 'page-b' }],
-    });
-    const noteB1 = createTestNote({ uri: '/path/to/another/page-b.md' });
-    const noteB2 = createTestNote({ uri: '/path/to/more/page-b.md' });
-
-    const ws = createTestWorkspace();
-    ws.set(noteA)
-      .set(noteB1)
-      .set(noteB2);
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(graph.getLinks(noteA.uri)).toEqual([
-      {
-        source: noteA.uri,
-        target: noteB1.uri,
-        link: expect.objectContaining({ type: 'wikilink' }),
-      },
-    ]);
-  });
-
-  it('Resolves path wikilink in case of name conflict', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ slug: './more/page-b' }, { slug: 'yet/page-b' }],
-    });
-    const noteB1 = createTestNote({ uri: '/path/to/another/page-b.md' });
-    const noteB2 = createTestNote({ uri: '/path/to/more/page-b.md' });
-    const noteB3 = createTestNote({ uri: '/path/to/yet/page-b.md' });
-
-    const ws = createTestWorkspace();
-    ws.set(noteA)
-      .set(noteB1)
-      .set(noteB2)
-      .set(noteB3);
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([
-      noteB2.uri,
-      noteB3.uri,
-    ]);
-  });
-
-  it('Supports attachments', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [
-        // wikilink with extension
-        { slug: 'attachment-a.pdf' },
-        // wikilink without extension
-        { slug: 'attachment-b' },
-      ],
-    });
-    const attachmentA = createTestNote({
-      uri: '/path/to/more/attachment-a.pdf',
-    });
-    const attachmentB = createTestNote({
-      uri: '/path/to/more/attachment-b.pdf',
-    });
-    const ws = createTestWorkspace();
-    ws.set(noteA)
-      .set(attachmentA)
-      .set(attachmentB);
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(graph.getBacklinks(attachmentA.uri).map(l => l.source)).toEqual([
-      noteA.uri,
-    ]);
-    // Attachments require extension
-    expect(graph.getBacklinks(attachmentB.uri).map(l => l.source)).toEqual([]);
-  });
-
-  it('Resolves conflicts alphabetically - part 1', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ slug: 'attachment-a.pdf' }],
-    });
-    const attachmentA = createTestNote({
-      uri: '/path/to/more/attachment-a.pdf',
-    });
-    const attachmentABis = createTestNote({
-      uri: '/path/to/attachment-a.pdf',
-    });
-    const ws = createTestWorkspace();
-    ws.set(noteA)
-      .set(attachmentA)
-      .set(attachmentABis);
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([
-      attachmentABis.uri,
-    ]);
-  });
-
-  it('Resolves conflicts alphabetically - part 2', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ slug: 'attachment-a.pdf' }],
-    });
-    const attachmentA = createTestNote({
-      uri: '/path/to/more/attachment-a.pdf',
-    });
-    const attachmentABis = createTestNote({
-      uri: '/path/to/attachment-a.pdf',
-    });
-    const ws = createTestWorkspace();
-    ws.set(noteA)
-      .set(attachmentABis)
-      .set(attachmentA);
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([
-      attachmentABis.uri,
-    ]);
-  });
-
-  it('Allows for dendron-style wikilinks, including a dot', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ slug: 'dendron.style' }],
-    });
-    const noteB1 = createTestNote({ uri: '/path/to/another/dendron.style.md' });
-
-    const ws = createTestWorkspace();
-    ws.set(noteA).set(noteB1);
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteB1.uri]);
-  });
-
-  it('Handles capitalization of files and wikilinks correctly', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [
-        // uppercased filename, lowercased slug
-        { slug: 'page-b' },
-        // lowercased filename, camelcased wikilink
-        { slug: 'Page-C' },
-        // lowercased filename, lowercased wikilink
-        { slug: 'page-d' },
-      ],
-    });
-    const ws = createTestWorkspace()
-      .set(noteA)
-      .set(createTestNote({ uri: '/somewhere/PAGE-B.md' }))
-      .set(createTestNote({ uri: '/path/another/page-c.md' }))
-      .set(createTestNote({ uri: '/path/another/page-d.md' }));
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(
-      graph
-        .getLinks(noteA.uri)
-        .map(link => link.target.path)
-        .sort()
-    ).toEqual([
-      '/path/another/page-c.md',
-      '/path/another/page-d.md',
-      '/somewhere/PAGE-B.md',
-    ]);
-  });
-});
-
-describe('markdown direct links', () => {
-  it('Support absolute and relative path', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ to: './another/page-b.md' }, { to: 'more/page-c.md' }],
-    });
-    const noteB = createTestNote({
-      uri: '/path/to/another/page-b.md',
-      links: [{ to: '../../to/page-a.md' }],
-    });
-    const noteC = createTestNote({
-      uri: '/path/to/more/page-c.md',
-    });
-    const ws = createTestWorkspace();
-    ws.set(noteA)
-      .set(noteB)
-      .set(noteC);
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(
-      graph
-        .getLinks(noteA.uri)
-        .map(link => link.target.path)
-        .sort()
-    ).toEqual(['/path/to/another/page-b.md', '/path/to/more/page-c.md']);
-
-    expect(graph.getLinks(noteB.uri).map(l => l.target)).toEqual([noteA.uri]);
-    expect(graph.getBacklinks(noteA.uri).map(l => l.source)).toEqual([
-      noteB.uri,
-    ]);
-    expect(graph.getConnections(noteA.uri)).toEqual([
-      {
-        source: noteA.uri,
-        target: noteB.uri,
-        link: expect.objectContaining({ type: 'link' }),
-      },
-      {
-        source: noteA.uri,
-        target: noteC.uri,
-        link: expect.objectContaining({ type: 'link' }),
-      },
-      {
-        source: noteB.uri,
-        target: noteA.uri,
-        link: expect.objectContaining({ type: 'link' }),
-      },
-    ]);
-  });
-});
-
-describe('Placeholders', () => {
-  it('Treats direct links to non-existing files as placeholders', () => {
-    const ws = createTestWorkspace();
-    const noteA = createTestNote({
-      uri: '/somewhere/from/page-a.md',
-      links: [{ to: '../page-b.md' }, { to: '/path/to/page-c.md' }],
-    });
-    ws.set(noteA);
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(graph.getAllConnections()[0]).toEqual({
-      source: noteA.uri,
-      target: URI.placeholder('/somewhere/page-b.md'),
-      link: expect.objectContaining({ type: 'link' }),
-    });
-    expect(graph.getAllConnections()[1]).toEqual({
-      source: noteA.uri,
-      target: URI.placeholder('/path/to/page-c.md'),
-      link: expect.objectContaining({ type: 'link' }),
-    });
-  });
-
-  it('Treats wikilinks without matching file as placeholders', () => {
-    const ws = createTestWorkspace();
-    const noteA = createTestNote({
-      uri: '/somewhere/page-a.md',
-      links: [{ slug: 'page-b' }],
-    });
-    ws.set(noteA);
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(graph.getAllConnections()[0]).toEqual({
-      source: noteA.uri,
-      target: URI.placeholder('page-b'),
-      link: expect.objectContaining({ type: 'wikilink' }),
-    });
-  });
-  it('Treats wikilink with definition to non-existing file as placeholders', () => {
-    const ws = createTestWorkspace();
-    const noteA = createTestNote({
-      uri: '/somewhere/page-a.md',
-      links: [{ slug: 'page-b' }, { slug: 'page-c' }],
-    });
-    noteA.definitions.push({
-      label: 'page-b',
-      url: './page-b.md',
-    });
-    noteA.definitions.push({
-      label: 'page-c',
-      url: '/path/to/page-c.md',
-    });
-    ws.set(noteA).set(
-      createTestNote({ uri: '/different/location/for/note-b.md' })
+    expect(ws.getIdentifier(first.uri.withFragment('section name'))).toEqual(
+      'to/page-a#section name'
     );
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(graph.getAllConnections()[0]).toEqual({
-      source: noteA.uri,
-      target: URI.placeholder('/somewhere/page-b.md'),
-      link: expect.objectContaining({ type: 'wikilink' }),
-    });
-    expect(graph.getAllConnections()[1]).toEqual({
-      source: noteA.uri,
-      target: URI.placeholder('/path/to/page-c.md'),
-      link: expect.objectContaining({ type: 'wikilink' }),
-    });
   });
 
-  it('Should work with a placeholder named like a JS prototype property', () => {
-    const ws = createTestWorkspace();
-    const noteA = createTestNote({
-      uri: '/page-a.md',
-      links: [{ slug: 'constructor' }],
-    });
-    ws.set(noteA);
-    const graph = FoamGraph.fromWorkspace(ws);
+  const needle = '/project/car/todo';
 
-    expect(
-      graph
-        .getAllNodes()
-        .map(uri => uri.path)
-        .sort()
-    ).toEqual(['/page-a.md', 'constructor']);
-  });
-});
-
-describe('Updating workspace happy path', () => {
-  it('Update links when modifying note', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ slug: 'page-b' }],
-    });
-    const noteB = createTestNote({
-      uri: '/path/to/another/page-b.md',
-      links: [{ slug: 'page-c' }],
-    });
-    const noteC = createTestNote({
-      uri: '/path/to/more/page-c.md',
-    });
-    const ws = createTestWorkspace();
-    ws.set(noteA)
-      .set(noteB)
-      .set(noteC);
-    let graph = FoamGraph.fromWorkspace(ws);
-
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteB.uri]);
-    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([
-      noteA.uri,
-    ]);
-    expect(graph.getBacklinks(noteC.uri).map(l => l.source)).toEqual([
-      noteB.uri,
-    ]);
-
-    // update the note
-    const noteABis = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ slug: 'page-c' }],
-    });
-    ws.set(noteABis);
-    // change is not propagated immediately
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteB.uri]);
-    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([
-      noteA.uri,
-    ]);
-    expect(graph.getBacklinks(noteC.uri).map(l => l.source)).toEqual([
-      noteB.uri,
-    ]);
-
-    // recompute the links
-    graph = FoamGraph.fromWorkspace(ws);
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteC.uri]);
-    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([]);
-    expect(
-      graph
-        .getBacklinks(noteC.uri)
-        .map(link => link.source.path)
-        .sort()
-    ).toEqual(['/path/to/another/page-b.md', '/path/to/page-a.md']);
-  });
-
-  it('Removing target note should produce placeholder for wikilinks', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ slug: 'page-b' }],
-    });
-    const noteB = createTestNote({
-      uri: '/path/to/another/page-b.md',
-    });
-    const ws = createTestWorkspace();
-    ws.set(noteA).set(noteB);
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteB.uri]);
-    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([
-      noteA.uri,
-    ]);
-    expect(ws.get(noteB.uri).type).toEqual('note');
-
-    // remove note-b
-    ws.delete(noteB.uri);
-    const graph2 = FoamGraph.fromWorkspace(ws);
-
-    expect(() => ws.get(noteB.uri)).toThrow();
-    expect(graph2.contains(URI.placeholder('page-b'))).toBeTruthy();
-  });
-
-  it('Adding note should replace placeholder for wikilinks', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ slug: 'page-b' }],
-    });
-    const ws = createTestWorkspace();
-    ws.set(noteA);
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([
-      URI.placeholder('page-b'),
-    ]);
-    expect(graph.contains(URI.placeholder('page-b'))).toBeTruthy();
-
-    // add note-b
-    const noteB = createTestNote({
-      uri: '/path/to/another/page-b.md',
-    });
-
-    ws.set(noteB);
-    FoamGraph.fromWorkspace(ws);
-
-    expect(() => ws.get(URI.placeholder('page-b'))).toThrow();
-    expect(ws.get(noteB.uri).type).toEqual('note');
-  });
-
-  it('Removing target note should produce placeholder for direct links', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ to: '/path/to/another/page-b.md' }],
-    });
-    const noteB = createTestNote({
-      uri: '/path/to/another/page-b.md',
-    });
-    const ws = createTestWorkspace();
-    ws.set(noteA).set(noteB);
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteB.uri]);
-    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([
-      noteA.uri,
-    ]);
-    expect(ws.get(noteB.uri).type).toEqual('note');
-
-    // remove note-b
-    ws.delete(noteB.uri);
-    const graph2 = FoamGraph.fromWorkspace(ws);
-
-    expect(() => ws.get(noteB.uri)).toThrow();
-    expect(
-      graph2.contains(URI.placeholder('/path/to/another/page-b.md'))
-    ).toBeTruthy();
-  });
-
-  it('Adding note should replace placeholder for direct links', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ to: '/path/to/another/page-b.md' }],
-    });
-    const ws = createTestWorkspace();
-    ws.set(noteA);
-    const graph = FoamGraph.fromWorkspace(ws);
-
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([
-      URI.placeholder('/path/to/another/page-b.md'),
-    ]);
-    expect(() =>
-      ws.get(URI.placeholder('/path/to/another/page-b.md'))
-    ).toThrow();
-
-    // add note-b
-    const noteB = createTestNote({
-      uri: '/path/to/another/page-b.md',
-    });
-
-    ws.set(noteB);
-    FoamGraph.fromWorkspace(ws);
-
-    expect(() => ws.get(URI.placeholder('page-b'))).toThrow();
-    expect(ws.get(noteB.uri).type).toEqual('note');
-  });
-
-  it('removing link to placeholder should remove placeholder', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ to: '/path/to/another/page-b.md' }],
-    });
-    const ws = createTestWorkspace().set(noteA);
-    const graph = FoamGraph.fromWorkspace(ws);
-    expect(
-      graph.contains(URI.placeholder('/path/to/another/page-b.md'))
-    ).toBeTruthy();
-
-    // update the note
-    const noteABis = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [],
-    });
-    ws.set(noteABis);
-    const graph2 = FoamGraph.fromWorkspace(ws);
-
-    expect(
-      graph2.contains(URI.placeholder('/path/to/another/page-b.md'))
-    ).toBeFalsy();
-  });
-});
-
-describe('Monitoring of workspace state', () => {
-  it('Update links when modifying note', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ slug: 'page-b' }],
-    });
-    const noteB = createTestNote({
-      uri: '/path/to/another/page-b.md',
-      links: [{ slug: 'page-c' }],
-    });
-    const noteC = createTestNote({
-      uri: '/path/to/more/page-c.md',
-    });
-    const ws = createTestWorkspace();
-    ws.set(noteA)
-      .set(noteB)
-      .set(noteC);
-    const graph = FoamGraph.fromWorkspace(ws, true);
-
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteB.uri]);
-    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([
-      noteA.uri,
-    ]);
-    expect(graph.getBacklinks(noteC.uri).map(l => l.source)).toEqual([
-      noteB.uri,
-    ]);
-
-    // update the note
-    const noteABis = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ slug: 'page-c' }],
-    });
-    ws.set(noteABis);
-
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteC.uri]);
-    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([]);
-    expect(
-      graph
-        .getBacklinks(noteC.uri)
-        .map(link => link.source.path)
-        .sort()
-    ).toEqual(['/path/to/another/page-b.md', '/path/to/page-a.md']);
-    ws.dispose();
-    graph.dispose();
-  });
-
-  it('Removing target note should produce placeholder for wikilinks', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ slug: 'page-b' }],
-    });
-    const noteB = createTestNote({
-      uri: '/path/to/another/page-b.md',
-    });
-    const ws = createTestWorkspace();
-    ws.set(noteA).set(noteB);
-    const graph = FoamGraph.fromWorkspace(ws, true);
-
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteB.uri]);
-    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([
-      noteA.uri,
-    ]);
-    expect(ws.get(noteB.uri).type).toEqual('note');
-
-    // remove note-b
-    ws.delete(noteB.uri);
-
-    expect(() => ws.get(noteB.uri)).toThrow();
-    ws.dispose();
-    graph.dispose();
-  });
-
-  it('Adding note should replace placeholder for wikilinks', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ slug: 'page-b' }],
-    });
-    const ws = createTestWorkspace();
-    ws.set(noteA);
-    const graph = FoamGraph.fromWorkspace(ws, true);
-
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([
-      URI.placeholder('page-b'),
-    ]);
-
-    // add note-b
-    const noteB = createTestNote({
-      uri: '/path/to/another/page-b.md',
-    });
-
-    ws.set(noteB);
-
-    expect(() => ws.get(URI.placeholder('page-b'))).toThrow();
-    expect(ws.get(noteB.uri).type).toEqual('note');
-    ws.dispose();
-    graph.dispose();
-  });
-
-  it('Removing target note should produce placeholder for direct links', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ to: '/path/to/another/page-b.md' }],
-    });
-    const noteB = createTestNote({
-      uri: '/path/to/another/page-b.md',
-    });
-    const ws = createTestWorkspace();
-    ws.set(noteA).set(noteB);
-    const graph = FoamGraph.fromWorkspace(ws, true);
-
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([noteB.uri]);
-    expect(graph.getBacklinks(noteB.uri).map(l => l.source)).toEqual([
-      noteA.uri,
-    ]);
-    expect(ws.get(noteB.uri).type).toEqual('note');
-
-    // remove note-b
-    ws.delete(noteB.uri);
-
-    expect(() => ws.get(noteB.uri)).toThrow();
-    expect(
-      graph.contains(URI.placeholder('/path/to/another/page-b.md'))
-    ).toBeTruthy();
-    ws.dispose();
-    graph.dispose();
-  });
-
-  it('Adding note should replace placeholder for direct links', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ to: '/path/to/another/page-b.md' }],
-    });
-    const ws = createTestWorkspace();
-    ws.set(noteA);
-    const graph = FoamGraph.fromWorkspace(ws, true);
-
-    expect(graph.getLinks(noteA.uri).map(l => l.target)).toEqual([
-      URI.placeholder('/path/to/another/page-b.md'),
-    ]);
-    expect(
-      graph.contains(URI.placeholder('/path/to/another/page-b.md'))
-    ).toBeTruthy();
-
-    // add note-b
-    const noteB = createTestNote({
-      uri: '/path/to/another/page-b.md',
-    });
-
-    ws.set(noteB);
-
-    expect(() => ws.get(URI.placeholder('page-b'))).toThrow();
-    expect(ws.get(noteB.uri).type).toEqual('note');
-    ws.dispose();
-    graph.dispose();
-  });
-
-  it('removing link to placeholder should remove placeholder', () => {
-    const noteA = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [{ to: '/path/to/another/page-b.md' }],
-    });
-    const ws = createTestWorkspace();
-    ws.set(noteA);
-    const graph = FoamGraph.fromWorkspace(ws, true);
-    expect(
-      graph.contains(URI.placeholder('/path/to/another/page-b.md'))
-    ).toBeTruthy();
-
-    // update the note
-    const noteABis = createTestNote({
-      uri: '/path/to/page-a.md',
-      links: [],
-    });
-    ws.set(noteABis);
-    expect(
-      graph.contains(URI.placeholder('/path/to/another/page-b.md'))
-    ).toBeFalsy();
-    ws.dispose();
-    graph.dispose();
+  test.each([
+    [['/project/home/todo', '/other/todo', '/something/else'], 'car/todo'],
+    [['/family/car/todo', '/other/todo'], 'project/car/todo'],
+    [[], 'todo'],
+  ])('should find shortest identifier', (haystack, id) => {
+    expect(FoamWorkspace.getShortestIdentifier(needle, haystack)).toEqual(id);
+  });
+
+  it('should ignore same string in haystack', () => {
+    const haystack = [
+      needle,
+      '/project/home/todo',
+      '/other/todo',
+      '/something/else',
+    ];
+    const identifier = FoamWorkspace.getShortestIdentifier(needle, haystack);
+    expect(identifier).toEqual('car/todo');
+  });
+
+  it('should return the best guess when no solution is possible', () => {
+    /**
+     * In this case there is no way to uniquely identify the element,
+     * our fallback is to just return the "least wrong" result, basically
+     * a full identifier
+     * This is an edge case that should never happen in a real repo
+     */
+    const haystack = [
+      '/parent/' + needle,
+      '/project/home/todo',
+      '/other/todo',
+      '/something/else',
+    ];
+    const identifier = FoamWorkspace.getShortestIdentifier(needle, haystack);
+    expect(identifier).toEqual('project/car/todo');
   });
 });

packages/foam-vscode/src/core/model/workspace.ts

@@ -1,30 +1,11 @@
 import { Resource, ResourceLink } from './note';
 import { URI } from './uri';
-import { isSome, isNone, getShortestIdentifier } from '../utils';
+import { isAbsolute, getExtension, changeExtension } from '../utils/path';
+import { isSome } from '../utils';
 import { Emitter } from '../common/event';
 import { ResourceProvider } from './provider';
 import { IDisposable } from '../common/lifecycle';
 
-export function getReferenceType(
-  reference: URI | string
-): 'uri' | 'absolute-path' | 'relative-path' | 'key' {
-  if (URI.isUri(reference)) {
-    return 'uri';
-  }
-  if (reference.startsWith('/')) {
-    return 'absolute-path';
-  }
-  if (reference.startsWith('./') || reference.startsWith('../')) {
-    return 'relative-path';
-  }
-  return 'key';
-}
-
-function hasExtension(path: string): boolean {
-  const dotIdx = path.lastIndexOf('.');
-  return dotIdx > 0 && path.length - dotIdx <= 4;
-}
-
 export class FoamWorkspace implements IDisposable {
   private onDidAddEmitter = new Emitter<Resource>();
   private onDidUpdateEmitter = new Emitter<{ old: Resource; new: Resource }>();
@@ -63,9 +44,7 @@ export class FoamWorkspace implements IDisposable {
   }
 
   public exists(uri: URI): boolean {
-    return (
-      !URI.isPlaceholder(uri) && isSome(this.resources.get(normalize(uri.path)))
-    );
+    return isSome(this.find(uri));
   }
 
   public list(): Resource[] {
@@ -81,19 +60,17 @@ export class FoamWorkspace implements IDisposable {
     }
   }
 
-  public listById(resourceId: string): Resource[] {
-    let needle = '/' + resourceId;
-    if (!hasExtension(needle)) {
-      needle = needle + '.md';
-    }
-    needle = normalize(needle);
-    let resources = [];
+  public listByIdentifier(identifier: string): Resource[] {
+    const needle = normalize('/' + identifier);
+    const mdNeedle =
+      getExtension(needle) !== '.md' ? needle + '.md' : undefined;
+    const resources = [];
     for (const key of this.resources.keys()) {
-      if (key.endsWith(needle)) {
+      if ((mdNeedle && key.endsWith(mdNeedle)) || key.endsWith(needle)) {
         resources.push(this.resources.get(normalize(key)));
       }
     }
-    return resources;
+    return resources.sort((a, b) => a.uri.path.localeCompare(b.uri.path));
   }
 
   /**
@@ -103,60 +80,50 @@ export class FoamWorkspace implements IDisposable {
    */
   public getIdentifier(forResource: URI): string {
     const amongst = [];
-    const base = forResource.path.split('/').pop();
+    const basename = forResource.getBasename();
     for (const res of this.resources.values()) {
       // Just a quick optimization to only add the elements that might match
-      if (res.uri.path.endsWith(base)) {
-        if (!URI.isEqual(res.uri, forResource)) {
+      if (res.uri.path.endsWith(basename)) {
+        if (!res.uri.isEqual(forResource)) {
           amongst.push(res.uri);
         }
       }
     }
-    const identifier = getShortestIdentifier(
+    let identifier = FoamWorkspace.getShortestIdentifier(
       forResource.path,
       amongst.map(uri => uri.path)
     );
-
-    return identifier.endsWith('.md') ? identifier.slice(0, -3) : identifier;
+    identifier = changeExtension(identifier, '.md', '');
+    if (forResource.fragment) {
+      identifier += `#${forResource.fragment}`;
+    }
+    return identifier;
   }
 
-  public find(resourceId: URI | string, reference?: URI): Resource | null {
-    const refType = getReferenceType(resourceId);
-    switch (refType) {
-      case 'uri':
-        const uri = resourceId as URI;
-        return this.exists(uri)
-          ? this.resources.get(normalize(uri.path)) ?? null
-          : null;
-
-      case 'key':
-        const resources = this.listById(resourceId as string);
-        const sorted = resources.sort((a, b) =>
-          a.uri.path.localeCompare(b.uri.path)
-        );
-        return sorted[0] ?? null;
-
-      case 'absolute-path':
-        if (!hasExtension(resourceId as string)) {
-          resourceId = resourceId + '.md';
-        }
-        const resourceUri = URI.file(resourceId as string);
-        return this.resources.get(normalize(resourceUri.path)) ?? null;
-
-      case 'relative-path':
-        if (isNone(reference)) {
-          return null;
-        }
-        if (!hasExtension(resourceId as string)) {
-          resourceId = resourceId + '.md';
-        }
-        const relativePath = resourceId as string;
-        const targetUri = URI.computeRelativeURI(reference, relativePath);
-        return this.resources.get(normalize(targetUri.path)) ?? null;
-
-      default:
-        throw new Error('Unexpected reference type: ' + refType);
+  public find(reference: URI | string, baseUri?: URI): Resource | null {
+    if (reference instanceof URI) {
+      return this.resources.get(normalize((reference as URI).path)) ?? null;
     }
+    let resource: Resource | null = null;
+    const [path, fragment] = (reference as string).split('#');
+    if (FoamWorkspace.isIdentifier(path)) {
+      resource = this.listByIdentifier(path)[0];
+    } else {
+      if (isAbsolute(path) || isSome(baseUri)) {
+        if (getExtension(path) !== '.md') {
+          const uri = baseUri.resolve(path + '.md');
+          resource = uri ? this.resources.get(normalize(uri.path)) : null;
+        }
+        if (!resource) {
+          const uri = baseUri.resolve(path);
+          resource = uri ? this.resources.get(normalize(uri.path)) : null;
+        }
+      }
+    }
+    if (resource && fragment) {
+      resource = { ...resource, uri: resource.uri.withFragment(fragment) };
+    }
+    return resource ?? null;
   }
 
   public resolveLink(resource: Resource, link: ResourceLink): URI {
@@ -183,6 +150,51 @@ export class FoamWorkspace implements IDisposable {
     this.onDidDeleteEmitter.dispose();
     this.onDidUpdateEmitter.dispose();
   }
+
+  static isIdentifier(path: string): boolean {
+    return !(
+      path.startsWith('/') ||
+      path.startsWith('./') ||
+      path.startsWith('../')
+    );
+  }
+
+  /**
+   * Returns the minimal identifier for the given string amongst others
+   *
+   * @param forPath the value to compute the identifier for
+   * @param amongst the set of strings within which to find the identifier
+   */
+  static getShortestIdentifier(forPath: string, amongst: string[]): string {
+    const needleTokens = forPath.split('/').reverse();
+    const haystack = amongst
+      .filter(value => value !== forPath)
+      .map(value => value.split('/').reverse());
+
+    let tokenIndex = 0;
+    let res = needleTokens;
+    while (tokenIndex < needleTokens.length) {
+      for (let j = haystack.length - 1; j >= 0; j--) {
+        if (
+          haystack[j].length < tokenIndex ||
+          needleTokens[tokenIndex] !== haystack[j][tokenIndex]
+        ) {
+          haystack.splice(j, 1);
+        }
+      }
+      if (haystack.length === 0) {
+        res = needleTokens.splice(0, tokenIndex + 1);
+        break;
+      }
+      tokenIndex++;
+    }
+    const identifier = res
+      .filter(token => token.trim() !== '')
+      .reverse()
+      .join('/');
+
+    return identifier;
+  }
 }
 
 const normalize = (v: string) => v.toLocaleLowerCase();

packages/foam-vscode/src/core/services/datastore.test.ts

@@ -5,14 +5,14 @@ import { FileDataStore, Matcher, toMatcherPathFormat } from './datastore';
 
 Logger.setLevel('error');
 
-const testFolder = URI.joinPath(TEST_DATA_DIR, 'test-datastore');
+const testFolder = TEST_DATA_DIR.joinPath('test-datastore');
 
 describe('Matcher', () => {
   it('generates globs with the base dir provided', () => {
     const matcher = new Matcher([testFolder], ['*'], []);
     expect(matcher.folders).toEqual([toMatcherPathFormat(testFolder)]);
     expect(matcher.include).toEqual([
-      toMatcherPathFormat(URI.joinPath(testFolder, '*')),
+      toMatcherPathFormat(testFolder.joinPath('*')),
     ]);
   });
 
@@ -20,7 +20,7 @@ describe('Matcher', () => {
     const matcher = new Matcher([testFolder]);
     expect(matcher.exclude).toEqual([]);
     expect(matcher.include).toEqual([
-      toMatcherPathFormat(URI.joinPath(testFolder, '**', '*')),
+      toMatcherPathFormat(testFolder.joinPath('**', '*')),
     ]);
   });
 
@@ -28,32 +28,32 @@ describe('Matcher', () => {
     const matcher = new Matcher([testFolder], ['g1', 'g2'], []);
     expect(matcher.exclude).toEqual([]);
     expect(matcher.include).toEqual([
-      toMatcherPathFormat(URI.joinPath(testFolder, 'g1')),
-      toMatcherPathFormat(URI.joinPath(testFolder, 'g2')),
+      toMatcherPathFormat(testFolder.joinPath('g1')),
+      toMatcherPathFormat(testFolder.joinPath('g2')),
     ]);
   });
 
   it('has a match method to filter strings', () => {
     const matcher = new Matcher([testFolder], ['*.md'], []);
     const files = [
-      URI.joinPath(testFolder, 'file1.md'),
-      URI.joinPath(testFolder, 'file2.md'),
-      URI.joinPath(testFolder, 'file3.mdx'),
-      URI.joinPath(testFolder, 'sub', 'file4.md'),
+      testFolder.joinPath('file1.md'),
+      testFolder.joinPath('file2.md'),
+      testFolder.joinPath('file3.mdx'),
+      testFolder.joinPath('sub', 'file4.md'),
     ];
     expect(matcher.match(files)).toEqual([
-      URI.joinPath(testFolder, 'file1.md'),
-      URI.joinPath(testFolder, 'file2.md'),
+      testFolder.joinPath('file1.md'),
+      testFolder.joinPath('file2.md'),
     ]);
   });
 
   it('has a isMatch method to see whether a file is matched or not', () => {
     const matcher = new Matcher([testFolder], ['*.md'], []);
     const files = [
-      URI.joinPath(testFolder, 'file1.md'),
-      URI.joinPath(testFolder, 'file2.md'),
-      URI.joinPath(testFolder, 'file3.mdx'),
-      URI.joinPath(testFolder, 'sub', 'file4.md'),
+      testFolder.joinPath('file1.md'),
+      testFolder.joinPath('file2.md'),
+      testFolder.joinPath('file3.mdx'),
+      testFolder.joinPath('sub', 'file4.md'),
     ];
     expect(matcher.isMatch(files[0])).toEqual(true);
     expect(matcher.isMatch(files[1])).toEqual(true);
@@ -72,10 +72,10 @@ describe('Matcher', () => {
   it('ignores files in the exclude list', () => {
     const matcher = new Matcher([testFolder], ['*.md'], ['file1.*']);
     const files = [
-      URI.joinPath(testFolder, 'file1.md'),
-      URI.joinPath(testFolder, 'file2.md'),
-      URI.joinPath(testFolder, 'file3.mdx'),
-      URI.joinPath(testFolder, 'sub', 'file4.md'),
+      testFolder.joinPath('file1.md'),
+      testFolder.joinPath('file2.md'),
+      testFolder.joinPath('file3.mdx'),
+      testFolder.joinPath('sub', 'file4.md'),
     ];
     expect(matcher.isMatch(files[0])).toEqual(false);
     expect(matcher.isMatch(files[1])).toEqual(true);

packages/foam-vscode/src/core/services/datastore.ts

@@ -2,11 +2,12 @@ import micromatch from 'micromatch';
 import fs from 'fs';
 import { URI } from '../model/uri';
 import { Logger } from '../utils/log';
-import glob from 'glob';
+import { glob } from 'glob';
 import { promisify } from 'util';
 import { isWindows } from '../common/platform';
 
 const findAllFiles = promisify(glob);
+
 export interface IMatcher {
   /**
    * Filters the given list of URIs, keepin only the ones that
@@ -39,8 +40,8 @@ export interface IMatcher {
  * we convert the fs path on the way in and out
  */
 export const toMatcherPathFormat = isWindows
-  ? (uri: URI) => URI.toFsPath(uri).replace(/\\/g, '/')
-  : (uri: URI) => URI.toFsPath(uri);
+  ? (uri: URI) => uri.toFsPath().replace(/\\/g, '/')
+  : (uri: URI) => uri.toFsPath();
 
 export const toFsPath = isWindows
   ? (path: string): string => path.replace(/\//g, '\\')
@@ -76,7 +77,7 @@ export class Matcher implements IMatcher {
 
   match(files: URI[]) {
     const matches = micromatch(
-      files.map(f => URI.toFsPath(f)),
+      files.map(f => f.toFsPath()),
       this.include,
       {
         ignore: this.exclude,
@@ -117,13 +118,14 @@ export class FileDataStore implements IDataStore {
   async list(glob: string, ignoreGlob?: string | string[]): Promise<URI[]> {
     const res = await findAllFiles(glob, {
       ignore: ignoreGlob,
+      strict: false,
     });
     return res.map(URI.file);
   }
 
   async read(uri: URI) {
     try {
-      return (await fs.promises.readFile(URI.toFsPath(uri))).toString();
+      return (await fs.promises.readFile(uri.toFsPath())).toString();
     } catch (e) {
       Logger.error(
         `FileDataStore: error while reading uri: ${uri.path} - ${e}`

packages/foam-vscode/src/core/services/markdown-parser.test.ts

@@ -0,0 +1,396 @@
+import { createMarkdownParser, ParserPlugin } from './markdown-parser';
+import { ResourceLink } from '../model/note';
+import { Logger } from '../utils/log';
+import { URI } from '../model/uri';
+import { Range } from '../model/range';
+import { getRandomURI } from '../../test/test-utils';
+
+Logger.setLevel('error');
+
+const parser = createMarkdownParser([]);
+const createNoteFromMarkdown = (content: string, path?: string) =>
+  parser.parse(path ? URI.file(path) : getRandomURI(), content);
+
+describe('Markdown parsing', () => {
+  it('should create a Resource from a markdown file', () => {
+    const note = createNoteFromMarkdown('Note content', '/a/path.md');
+    expect(note.uri).toEqual(URI.file('/a/path.md'));
+  });
+
+  describe('Links', () => {
+    it('should skip external links', () => {
+      const note = createNoteFromMarkdown(
+        `this is a [link to google](https://www.google.com)`
+      );
+      expect(note.links.length).toEqual(0);
+    });
+
+    it('should skip links to a section within the file', () => {
+      const note = createNoteFromMarkdown(
+        `this is a [link to intro](#introduction)`
+      );
+      expect(note.links.length).toEqual(0);
+    });
+
+    it('should detect regular markdown links', () => {
+      const note = createNoteFromMarkdown(
+        'this is a [link to page b](../doc/page-b.md)'
+      );
+      expect(note.links.length).toEqual(1);
+      const link = note.links[0];
+      expect(link.type).toEqual('link');
+      expect(link.label).toEqual('link to page b');
+      expect(link.rawText).toEqual('[link to page b](../doc/page-b.md)');
+      expect(link.target).toEqual('../doc/page-b.md');
+    });
+
+    it('should detect links that have formatting in label', () => {
+      const note = createNoteFromMarkdown(
+        'this is [**link** with __formatting__](../doc/page-b.md)'
+      );
+      expect(note.links.length).toEqual(1);
+      const link = note.links[0];
+      expect(link.type).toEqual('link');
+      expect(link.label).toEqual('link with formatting');
+      expect(link.target).toEqual('../doc/page-b.md');
+    });
+
+    it('should detect wikilinks', () => {
+      const note = createNoteFromMarkdown(
+        'Some content and [[a link]] to [[a file]]'
+      );
+      expect(note.links.length).toEqual(2);
+      let link = note.links[0];
+      expect(link.type).toEqual('wikilink');
+      expect(link.rawText).toEqual('[[a link]]');
+      expect(link.label).toEqual('a link');
+      expect(link.target).toEqual('a link');
+      link = note.links[1];
+      expect(link.type).toEqual('wikilink');
+      expect(link.rawText).toEqual('[[a file]]');
+      expect(link.label).toEqual('a file');
+      expect(link.target).toEqual('a file');
+    });
+
+    it('should detect wikilinks that have aliases', () => {
+      const note = createNoteFromMarkdown(
+        'this is [[link|link alias]]. A link with spaces [[other link | spaced]]'
+      );
+      expect(note.links.length).toEqual(2);
+      let link = note.links[0];
+      expect(link.type).toEqual('wikilink');
+      expect(link.rawText).toEqual('[[link|link alias]]');
+      expect(link.label).toEqual('link alias');
+      expect(link.target).toEqual('link');
+      link = note.links[1];
+      expect(link.type).toEqual('wikilink');
+      expect(link.rawText).toEqual('[[other link | spaced]]');
+      expect(link.label).toEqual('spaced');
+      expect(link.target).toEqual('other link');
+    });
+
+    it('should skip wikilinks in codeblocks', () => {
+      const noteA = createNoteFromMarkdown(`
+this is some text with our [[first-wikilink]].
+
+\`\`\`
+this is inside a [[codeblock]]
+\`\`\`
+
+this is some text with our [[second-wikilink]].
+    `);
+      expect(noteA.links.map(l => l.label)).toEqual([
+        'first-wikilink',
+        'second-wikilink',
+      ]);
+    });
+
+    it('should skip wikilinks in inlined codeblocks', () => {
+      const noteA = createNoteFromMarkdown(`
+this is some text with our [[first-wikilink]].
+
+this is \`inside a [[codeblock]]\`
+
+this is some text with our [[second-wikilink]].
+    `);
+      expect(noteA.links.map(l => l.label)).toEqual([
+        'first-wikilink',
+        'second-wikilink',
+      ]);
+    });
+  });
+
+  describe('Note Title', () => {
+    it('should initialize note title if heading exists', () => {
+      const note = createNoteFromMarkdown(`
+# Page A
+this note has a title
+    `);
+      expect(note.title).toBe('Page A');
+    });
+
+    it('should support wikilinks and urls in title', () => {
+      const note = createNoteFromMarkdown(`
+# Page A with [[wikilink]] and a [url](https://google.com)
+this note has a title
+    `);
+      expect(note.title).toBe('Page A with wikilink and a url');
+    });
+
+    it('should default to file name if heading does not exist', () => {
+      const note = createNoteFromMarkdown(
+        `This file has no heading.`,
+        '/page-d.md'
+      );
+
+      expect(note.title).toEqual('page-d');
+    });
+
+    it('should give precedence to frontmatter title over other headings', () => {
+      const note = createNoteFromMarkdown(`
+---
+title: Note Title
+date: 20-12-12
+---
+
+# Other Note Title
+    `);
+
+      expect(note.title).toBe('Note Title');
+    });
+
+    it('should support numbers as title', () => {
+      const note1 = createNoteFromMarkdown(`hello`, '/157.md');
+      expect(note1.title).toBe('157');
+
+      const note2 = createNoteFromMarkdown(`# 158`, '/157.md');
+      expect(note2.title).toBe('158');
+
+      const note3 = createNoteFromMarkdown(
+        `
+---
+title: 159
+---
+
+# 158
+`,
+        '/157.md'
+      );
+      expect(note3.title).toBe('159');
+    });
+
+    it('should support empty titles (see #276)', () => {
+      const note = createNoteFromMarkdown(
+        `
+#
+
+this note has an empty title line
+    `,
+        '/Hello Page.md'
+      );
+      expect(note.title).toEqual('Hello Page');
+    });
+  });
+
+  describe('Frontmatter', () => {
+    it('should parse yaml frontmatter', () => {
+      const note = createNoteFromMarkdown(`
+---
+title: Note Title
+date: 20-12-12
+---
+
+# Other Note Title`);
+
+      expect(note.properties.title).toBe('Note Title');
+      expect(note.properties.date).toBe('20-12-12');
+    });
+
+    it('should parse empty frontmatter', () => {
+      const note = createNoteFromMarkdown(`
+---
+---
+
+# Empty Frontmatter
+`);
+
+      expect(note.properties).toEqual({});
+    });
+
+    it('should not fail when there are issues with parsing frontmatter', () => {
+      const note = createNoteFromMarkdown(`
+---
+title: - one
+ - two
+ - #
+---
+
+`);
+
+      expect(note.properties).toEqual({});
+    });
+  });
+
+  describe('Tags', () => {
+    it('can find tags in the text of the note', () => {
+      const noteA = createNoteFromMarkdown(`
+# this is a #heading
+#this is some #text that includes #tags we #care-about.
+    `);
+      expect(noteA.tags).toEqual([
+        { label: 'heading', range: Range.create(1, 12, 1, 20) },
+        { label: 'this', range: Range.create(2, 0, 2, 5) },
+        { label: 'text', range: Range.create(2, 14, 2, 19) },
+        { label: 'tags', range: Range.create(2, 34, 2, 39) },
+        { label: 'care-about', range: Range.create(2, 43, 2, 54) },
+      ]);
+    });
+
+    it('will skip tags in codeblocks', () => {
+      const noteA = createNoteFromMarkdown(`
+this is some #text that includes #tags we #care-about.
+
+\`\`\`
+this is a #codeblock
+\`\`\`
+    `);
+      expect(noteA.tags.map(t => t.label)).toEqual([
+        'text',
+        'tags',
+        'care-about',
+      ]);
+    });
+
+    it('will skip tags in inlined codeblocks', () => {
+      const noteA = createNoteFromMarkdown(`
+this is some #text that includes #tags we #care-about.
+this is a \`inlined #codeblock\` `);
+      expect(noteA.tags.map(t => t.label)).toEqual([
+        'text',
+        'tags',
+        'care-about',
+      ]);
+    });
+    it('can find tags as text in yaml', () => {
+      const noteA = createNoteFromMarkdown(`
+---
+tags: hello, world  this_is_good
+---
+# this is a heading
+this is some #text that includes #tags we #care-about.
+    `);
+      expect(noteA.tags.map(t => t.label)).toEqual([
+        'hello',
+        'world',
+        'this_is_good',
+        'text',
+        'tags',
+        'care-about',
+      ]);
+    });
+
+    it('can find tags as array in yaml', () => {
+      const noteA = createNoteFromMarkdown(`
+---
+tags: [hello, world,  this_is_good]
+---
+# this is a heading
+this is some #text that includes #tags we #care-about.
+    `);
+      expect(noteA.tags.map(t => t.label)).toEqual([
+        'hello',
+        'world',
+        'this_is_good',
+        'text',
+        'tags',
+        'care-about',
+      ]);
+    });
+
+    it('provides rough range for tags in yaml', () => {
+      // For now it's enough to just get the YAML block range
+      // in the future we might want to be more specific
+
+      const noteA = createNoteFromMarkdown(`
+---
+tags: [hello, world, this_is_good]
+---
+# this is a heading
+this is some text
+    `);
+      expect(noteA.tags[0]).toEqual({
+        label: 'hello',
+        range: Range.create(1, 0, 3, 3),
+      });
+    });
+  });
+
+  describe('Sections', () => {
+    it('should find sections within the note', () => {
+      const note = createNoteFromMarkdown(`
+# Section 1
+
+This is the content of section 1.
+
+## Section 1.1
+
+This is the content of section 1.1.
+
+# Section 2
+
+This is the content of section 2.
+      `);
+      expect(note.sections).toHaveLength(3);
+      expect(note.sections[0].label).toEqual('Section 1');
+      expect(note.sections[0].range).toEqual(Range.create(1, 0, 9, 0));
+      expect(note.sections[1].label).toEqual('Section 1.1');
+      expect(note.sections[1].range).toEqual(Range.create(5, 0, 9, 0));
+      expect(note.sections[2].label).toEqual('Section 2');
+      expect(note.sections[2].range).toEqual(Range.create(9, 0, 13, 0));
+    });
+
+    it('should support wikilinks and links in the section label', () => {
+      const note = createNoteFromMarkdown(`
+# Section with [[wikilink]]
+
+This is the content of section with wikilink
+
+## Section with [url](https://google.com)
+
+This is the content of section with url`);
+      expect(note.sections).toHaveLength(2);
+      expect(note.sections[0].label).toEqual('Section with wikilink');
+      expect(note.sections[1].label).toEqual('Section with url');
+    });
+  });
+
+  describe('Parser plugins', () => {
+    const testPlugin: ParserPlugin = {
+      visit: (node, note) => {
+        if (node.type === 'heading') {
+          note.properties.hasHeading = true;
+        }
+      },
+    };
+    const parser = createMarkdownParser([testPlugin]);
+
+    it('can augment the parsing of the file', () => {
+      const note1 = parser.parse(
+        URI.file('/path/to/a'),
+        `
+This is a test note without headings.
+But with some content.
+`
+      );
+      expect(note1.properties.hasHeading).toBeUndefined();
+
+      const note2 = parser.parse(
+        URI.file('/path/to/a'),
+        `
+# This is a note with header
+and some content`
+      );
+      expect(note2.properties.hasHeading).toBeTruthy();
+    });
+  });
+});

packages/foam-vscode/src/core/services/markdown-parser.ts

@@ -1,37 +1,19 @@
-import { Node, Position as AstPosition } from 'unist';
+// eslint-disable-next-line import/no-extraneous-dependencies
+import { Point, Node, Position as AstPosition } from 'unist';
 import unified from 'unified';
 import markdownParse from 'remark-parse';
 import wikiLinkPlugin from 'remark-wiki-link';
 import frontmatterPlugin from 'remark-frontmatter';
 import { parse as parseYAML } from 'yaml';
 import visit from 'unist-util-visit';
-import { Parent, Point } from 'unist';
 import detectNewline from 'detect-newline';
 import os from 'os';
-import {
-  NoteLinkDefinition,
-  Resource,
-  ResourceLink,
-  WikiLink,
-  ResourceParser,
-} from './model/note';
-import { Position } from './model/position';
-import { Range } from './model/range';
-import {
-  dropExtension,
-  extractHashtags,
-  extractTagsFromProp,
-  isNone,
-  isSome,
-} from './utils';
-import { Logger } from './utils/log';
-import { URI } from './model/uri';
-import { FoamWorkspace } from './model/workspace';
-import { IDataStore, FileDataStore, IMatcher } from './services/datastore';
-import { IDisposable } from './common/lifecycle';
-import { ResourceProvider } from './model/provider';
-
-const ALIAS_DIVIDER_CHAR = '|';
+import { NoteLinkDefinition, Resource, ResourceParser } from '../model/note';
+import { Position } from '../model/position';
+import { Range } from '../model/range';
+import { extractHashtags, extractTagsFromProp, isSome } from '../utils';
+import { Logger } from '../utils/log';
+import { URI } from '../model/uri';
 
 export interface ParserPlugin {
   name?: string;
@@ -43,263 +25,7 @@ export interface ParserPlugin {
   onDidFindProperties?: (properties: any, note: Resource, node: Node) => void;
 }
 
-export class MarkdownResourceProvider implements ResourceProvider {
-  private disposables: IDisposable[] = [];
-
-  constructor(
-    private readonly matcher: IMatcher,
-    private readonly watcherInit?: (triggers: {
-      onDidChange: (uri: URI) => void;
-      onDidCreate: (uri: URI) => void;
-      onDidDelete: (uri: URI) => void;
-    }) => IDisposable[],
-    private readonly parser: ResourceParser = createMarkdownParser([]),
-    private readonly dataStore: IDataStore = new FileDataStore()
-  ) {}
-
-  async init(workspace: FoamWorkspace) {
-    const filesByFolder = await Promise.all(
-      this.matcher.include.map(glob =>
-        this.dataStore.list(glob, this.matcher.exclude)
-      )
-    );
-    const files = this.matcher
-      .match(filesByFolder.flat())
-      .filter(this.supports);
-
-    await Promise.all(
-      files.map(async uri => {
-        Logger.info('Found: ' + URI.toString(uri));
-        const content = await this.dataStore.read(uri);
-        if (isSome(content)) {
-          workspace.set(this.parser.parse(uri, content));
-        }
-      })
-    );
-
-    this.disposables =
-      this.watcherInit?.({
-        onDidChange: async uri => {
-          if (this.matcher.isMatch(uri) && this.supports(uri)) {
-            const content = await this.dataStore.read(uri);
-            isSome(content) &&
-              workspace.set(await this.parser.parse(uri, content));
-          }
-        },
-        onDidCreate: async uri => {
-          if (this.matcher.isMatch(uri) && this.supports(uri)) {
-            const content = await this.dataStore.read(uri);
-            isSome(content) &&
-              workspace.set(await this.parser.parse(uri, content));
-          }
-        },
-        onDidDelete: uri => {
-          this.supports(uri) && workspace.delete(uri);
-        },
-      }) ?? [];
-  }
-
-  supports(uri: URI) {
-    return URI.isMarkdownFile(uri);
-  }
-
-  read(uri: URI): Promise<string | null> {
-    return this.dataStore.read(uri);
-  }
-
-  readAsMarkdown(uri: URI): Promise<string | null> {
-    return this.dataStore.read(uri);
-  }
-
-  async fetch(uri: URI) {
-    const content = await this.read(uri);
-    return isSome(content) ? this.parser.parse(uri, content) : null;
-  }
-
-  resolveLink(
-    workspace: FoamWorkspace,
-    resource: Resource,
-    link: ResourceLink
-  ) {
-    let targetUri: URI | undefined;
-    switch (link.type) {
-      case 'wikilink':
-        const definitionUri = resource.definitions.find(
-          def => def.label === link.target
-        )?.url;
-        if (isSome(definitionUri)) {
-          const definedUri = URI.resolve(definitionUri, resource.uri);
-          targetUri =
-            workspace.find(definedUri, resource.uri)?.uri ??
-            URI.placeholder(definedUri.path);
-        } else {
-          targetUri =
-            workspace.find(link.target, resource.uri)?.uri ??
-            URI.placeholder(link.target);
-        }
-        break;
-
-      case 'link':
-        targetUri =
-          workspace.find(link.target, resource.uri)?.uri ??
-          URI.placeholder(URI.resolve(link.target, resource.uri).path);
-        break;
-    }
-    return targetUri;
-  }
-
-  dispose() {
-    this.disposables.forEach(d => d.dispose());
-  }
-}
-
-/**
- * Traverses all the children of the given node, extracts
- * the text from them, and returns it concatenated.
- *
- * @param root the node from which to start collecting text
- */
-const getTextFromChildren = (root: Node): string => {
-  let text = '';
-  visit(root, 'text', node => {
-    if (node.type === 'text') {
-      text = text + (node as any).value;
-    }
-  });
-  return text;
-};
-
-const tagsPlugin: ParserPlugin = {
-  name: 'tags',
-  onDidFindProperties: (props, note, node) => {
-    if (isSome(props.tags)) {
-      const yamlTags = extractTagsFromProp(props.tags);
-      yamlTags.forEach(t => {
-        note.tags.push({
-          label: t,
-          range: astPositionToFoamRange(node.position!),
-        });
-      });
-    }
-  },
-  visit: (node, note) => {
-    if (node.type === 'text') {
-      const tags = extractHashtags((node as any).value);
-      tags.forEach(tag => {
-        let start = astPointToFoamPosition(node.position!.start);
-        start.character = start.character + tag.offset;
-        const end: Position = {
-          line: start.line,
-          character: start.character + tag.label.length + 1,
-        };
-        note.tags.push({
-          label: tag.label,
-          range: Range.createFromPosition(start, end),
-        });
-      });
-    }
-  },
-};
-
-const titlePlugin: ParserPlugin = {
-  name: 'title',
-  visit: (node, note) => {
-    if (
-      note.title === '' &&
-      node.type === 'heading' &&
-      (node as any).depth === 1
-    ) {
-      note.title =
-        ((node as Parent)!.children?.[0] as any)?.value || note.title;
-    }
-  },
-  onDidFindProperties: (props, note) => {
-    // Give precendence to the title from the frontmatter if it exists
-    note.title = props.title?.toString() ?? note.title;
-  },
-  onDidVisitTree: (tree, note) => {
-    if (note.title === '') {
-      note.title = URI.getBasename(note.uri);
-    }
-  },
-};
-
-const wikilinkPlugin: ParserPlugin = {
-  name: 'wikilink',
-  visit: (node, note, noteSource) => {
-    if (node.type === 'wikiLink') {
-      const text = (node as any).value;
-      const alias = node.data?.alias as string;
-      const literalContent = noteSource.substring(
-        node.position!.start.offset!,
-        node.position!.end.offset!
-      );
-
-      const hasAlias =
-        literalContent !== text && literalContent.includes(ALIAS_DIVIDER_CHAR);
-      note.links.push({
-        type: 'wikilink',
-        rawText: literalContent,
-        label: hasAlias
-          ? alias.trim()
-          : literalContent.substring(2, literalContent.length - 2),
-        target: hasAlias
-          ? literalContent
-              .substring(2, literalContent.indexOf(ALIAS_DIVIDER_CHAR))
-              .replace(/\\/g, '')
-              .trim()
-          : text.trim(),
-        range: astPositionToFoamRange(node.position!),
-      });
-    }
-    if (node.type === 'link') {
-      const targetUri = (node as any).url;
-      const uri = URI.resolve(targetUri, note.uri);
-      if (uri.scheme !== 'file' || uri.path === note.uri.path) {
-        return;
-      }
-      const label = getTextFromChildren(node);
-      note.links.push({
-        type: 'link',
-        target: targetUri,
-        label: label,
-        range: astPositionToFoamRange(node.position!),
-      });
-    }
-  },
-};
-
-const definitionsPlugin: ParserPlugin = {
-  name: 'definitions',
-  visit: (node, note) => {
-    if (node.type === 'definition') {
-      note.definitions.push({
-        label: (node as any).label,
-        url: (node as any).url,
-        title: (node as any).title,
-        range: astPositionToFoamRange(node.position!),
-      });
-    }
-  },
-  onDidVisitTree: (tree, note) => {
-    note.definitions = getFoamDefinitions(note.definitions, note.source.end);
-  },
-};
-
-const handleError = (
-  plugin: ParserPlugin,
-  fnName: string,
-  uri: URI | undefined,
-  e: Error
-): void => {
-  const name = plugin.name || '';
-  Logger.warn(
-    `Error while executing [${fnName}] in plugin [${name}]. ${
-      uri ? 'for file [' + URI.toString(uri) : ']'
-    }.`,
-    e
-  );
-};
+const ALIAS_DIVIDER_CHAR = '|';
 
 export function createMarkdownParser(
   extraPlugins: ParserPlugin[]
@@ -314,6 +40,7 @@ export function createMarkdownParser(
     wikilinkPlugin,
     definitionsPlugin,
     tagsPlugin,
+    sectionsPlugin,
     ...extraPlugins,
   ];
 
@@ -327,7 +54,7 @@ export function createMarkdownParser(
 
   const foamParser: ResourceParser = {
     parse: (uri: URI, markdown: string): Resource => {
-      Logger.debug('Parsing:', URI.toString(uri));
+      Logger.debug('Parsing:', uri.toString());
       markdown = plugins.reduce((acc, plugin) => {
         try {
           return plugin.onWillParseMarkdown?.(acc) || acc;
@@ -339,11 +66,12 @@ export function createMarkdownParser(
       const tree = parser.parse(markdown);
       const eol = detectNewline(markdown) || os.EOL;
 
-      var note: Resource = {
+      const note: Resource = {
         uri: uri,
         type: 'note',
         properties: {},
         title: '',
+        sections: [],
         tags: [],
         links: [],
         definitions: [],
@@ -384,10 +112,7 @@ export function createMarkdownParser(
               }
             }
           } catch (e) {
-            Logger.warn(
-              `Error while parsing YAML for [${URI.toString(uri)}]`,
-              e
-            );
+            Logger.warn(`Error while parsing YAML for [${uri.toString()}]`, e);
           }
         }
 
@@ -413,12 +138,208 @@ export function createMarkdownParser(
   return foamParser;
 }
 
+/**
+ * Traverses all the children of the given node, extracts
+ * the text from them, and returns it concatenated.
+ *
+ * @param root the node from which to start collecting text
+ */
+const getTextFromChildren = (root: Node): string => {
+  let text = '';
+  visit(root, node => {
+    if (node.type === 'text' || node.type === 'wikiLink') {
+      text = text + ((node as any).value || '');
+    }
+  });
+  return text;
+};
+
+const tagsPlugin: ParserPlugin = {
+  name: 'tags',
+  onDidFindProperties: (props, note, node) => {
+    if (isSome(props.tags)) {
+      const yamlTags = extractTagsFromProp(props.tags);
+      yamlTags.forEach(t => {
+        note.tags.push({
+          label: t,
+          range: astPositionToFoamRange(node.position!),
+        });
+      });
+    }
+  },
+  visit: (node, note) => {
+    if (node.type === 'text') {
+      const tags = extractHashtags((node as any).value);
+      tags.forEach(tag => {
+        const start = astPointToFoamPosition(node.position!.start);
+        start.character = start.character + tag.offset;
+        const end: Position = {
+          line: start.line,
+          character: start.character + tag.label.length + 1,
+        };
+        note.tags.push({
+          label: tag.label,
+          range: Range.createFromPosition(start, end),
+        });
+      });
+    }
+  },
+};
+
+let sectionStack: Array<{ label: string; level: number; start: Position }> = [];
+const sectionsPlugin: ParserPlugin = {
+  name: 'section',
+  onWillVisitTree: () => {
+    sectionStack = [];
+  },
+  visit: (node, note) => {
+    if (node.type === 'heading') {
+      const level = (node as any).depth;
+      const label = getTextFromChildren(node);
+      if (!label || !level) {
+        return;
+      }
+      const start = astPositionToFoamRange(node.position!).start;
+
+      // Close all the sections that are not parents of the current section
+      while (
+        sectionStack.length > 0 &&
+        sectionStack[sectionStack.length - 1].level >= level
+      ) {
+        const section = sectionStack.pop();
+        note.sections.push({
+          label: section.label,
+          range: Range.createFromPosition(section.start, start),
+        });
+      }
+
+      // Add the new section to the stack
+      sectionStack.push({ label, level, start });
+    }
+  },
+  onDidVisitTree: (tree, note) => {
+    const end = Position.create(note.source.end.line + 1, 0);
+    // Close all the remainig sections
+    while (sectionStack.length > 0) {
+      const section = sectionStack.pop();
+      note.sections.push({
+        label: section.label,
+        range: { start: section.start, end },
+      });
+    }
+    note.sections.sort((a, b) =>
+      Position.compareTo(a.range.start, b.range.start)
+    );
+  },
+};
+
+const titlePlugin: ParserPlugin = {
+  name: 'title',
+  visit: (node, note) => {
+    if (
+      note.title === '' &&
+      node.type === 'heading' &&
+      (node as any).depth === 1
+    ) {
+      const title = getTextFromChildren(node);
+      note.title = title.length > 0 ? title : note.title;
+    }
+  },
+  onDidFindProperties: (props, note) => {
+    // Give precendence to the title from the frontmatter if it exists
+    note.title = props.title?.toString() ?? note.title;
+  },
+  onDidVisitTree: (tree, note) => {
+    if (note.title === '') {
+      note.title = note.uri.getName();
+    }
+  },
+};
+
+const wikilinkPlugin: ParserPlugin = {
+  name: 'wikilink',
+  visit: (node, note, noteSource) => {
+    if (node.type === 'wikiLink') {
+      const text = (node as any).value;
+      const alias = node.data?.alias as string;
+      const literalContent = noteSource.substring(
+        node.position!.start.offset!,
+        node.position!.end.offset!
+      );
+
+      const hasAlias =
+        literalContent !== text && literalContent.includes(ALIAS_DIVIDER_CHAR);
+      note.links.push({
+        type: 'wikilink',
+        rawText: literalContent,
+        label: hasAlias
+          ? alias.trim()
+          : literalContent.substring(2, literalContent.length - 2),
+        target: hasAlias
+          ? literalContent
+              .substring(2, literalContent.indexOf(ALIAS_DIVIDER_CHAR))
+              .replace(/\\/g, '')
+              .trim()
+          : text.trim(),
+        range: astPositionToFoamRange(node.position!),
+      });
+    }
+    if (node.type === 'link') {
+      const targetUri = (node as any).url;
+      const uri = note.uri.resolve(targetUri);
+      if (uri.scheme !== 'file' || uri.path === note.uri.path) {
+        return;
+      }
+      const label = getTextFromChildren(node);
+      note.links.push({
+        type: 'link',
+        target: targetUri,
+        label: label,
+        rawText: `[${label}](${targetUri})`,
+        range: astPositionToFoamRange(node.position!),
+      });
+    }
+  },
+};
+
+const definitionsPlugin: ParserPlugin = {
+  name: 'definitions',
+  visit: (node, note) => {
+    if (node.type === 'definition') {
+      note.definitions.push({
+        label: (node as any).label,
+        url: (node as any).url,
+        title: (node as any).title,
+        range: astPositionToFoamRange(node.position!),
+      });
+    }
+  },
+  onDidVisitTree: (tree, note) => {
+    note.definitions = getFoamDefinitions(note.definitions, note.source.end);
+  },
+};
+
+const handleError = (
+  plugin: ParserPlugin,
+  fnName: string,
+  uri: URI | undefined,
+  e: Error
+): void => {
+  const name = plugin.name || '';
+  Logger.warn(
+    `Error while executing [${fnName}] in plugin [${name}]. ${
+      uri ? 'for file [' + uri.toString() : ']'
+    }.`,
+    e
+  );
+};
+
 function getFoamDefinitions(
   defs: NoteLinkDefinition[],
   fileEndPoint: Position
 ): NoteLinkDefinition[] {
   let previousLine = fileEndPoint.line;
-  let foamDefinitions = [];
+  const foamDefinitions = [];
 
   // walk through each definition in reverse order
   // (last one first)
@@ -438,71 +359,6 @@ function getFoamDefinitions(
   return foamDefinitions;
 }
 
-export function stringifyMarkdownLinkReferenceDefinition(
-  definition: NoteLinkDefinition
-) {
-  let url =
-    definition.url.indexOf(' ') > 0 ? `<${definition.url}>` : definition.url;
-  let text = `[${definition.label}]: ${url}`;
-  if (definition.title) {
-    text = `${text} "${definition.title}"`;
-  }
-
-  return text;
-}
-export function createMarkdownReferences(
-  workspace: FoamWorkspace,
-  noteUri: URI,
-  includeExtension: boolean
-): NoteLinkDefinition[] {
-  const source = workspace.find(noteUri);
-  // Should never occur since we're already in a file,
-  if (source?.type !== 'note') {
-    console.warn(
-      `Note ${URI.toString(
-        noteUri
-      )} note found in workspace when attempting to generate markdown reference list`
-    );
-    return [];
-  }
-
-  return source.links
-    .filter(isWikilink)
-    .map(link => {
-      const targetUri = workspace.resolveLink(source, link);
-      const target = workspace.find(targetUri);
-      if (isNone(target)) {
-        Logger.warn(
-          `Link ${URI.toString(targetUri)} in ${URI.toString(
-            noteUri
-          )} is not valid.`
-        );
-        return null;
-      }
-      if (target.type === 'placeholder') {
-        // no need to create definitions for placeholders
-        return null;
-      }
-
-      const relativePath = URI.relativePath(noteUri, target.uri);
-      const pathToNote = includeExtension
-        ? relativePath
-        : dropExtension(relativePath);
-
-      // [wikilink-text]: path/to/file.md "Page title"
-      return {
-        label:
-          link.rawText.indexOf('[[') > -1
-            ? link.rawText.substring(2, link.rawText.length - 2)
-            : link.rawText || link.label,
-        url: pathToNote,
-        title: target.title,
-      };
-    })
-    .filter(isSome)
-    .sort();
-}
-
 /**
  * Converts the 1-index Point object into the VS Code 0-index Position object
  * @param point ast Point (1-indexed)
@@ -524,7 +380,3 @@ const astPositionToFoamRange = (pos: AstPosition): Range =>
     pos.end.line - 1,
     pos.end.column - 1
   );
-
-const isWikilink = (link: ResourceLink): link is WikiLink => {
-  return link.type === 'wikilink';
-};

packages/foam-vscode/src/core/services/markdown-provider.test.ts

@@ -0,0 +1,244 @@
+import { createMarkdownParser } from './markdown-parser';
+import { createMarkdownReferences } from './markdown-provider';
+import { Logger } from '../utils/log';
+import { URI } from '../model/uri';
+import {
+  createTestNote,
+  createTestWorkspace,
+  getRandomURI,
+} from '../../test/test-utils';
+
+Logger.setLevel('error');
+
+const parser = createMarkdownParser([]);
+const createNoteFromMarkdown = (content: string, path?: string) =>
+  parser.parse(path ? URI.file(path) : getRandomURI(), content);
+
+describe('Link resolution', () => {
+  describe('Wikilinks', () => {
+    it('should resolve basename wikilinks with files in same directory', () => {
+      const workspace = createTestWorkspace();
+      const noteA = createNoteFromMarkdown('Link to [[page b]]', './page-a.md');
+      const noteB = createNoteFromMarkdown('Content of page b', './page b.md');
+      workspace.set(noteA).set(noteB);
+      expect(workspace.resolveLink(noteA, noteA.links[0])).toEqual(noteB.uri);
+    });
+
+    it('should resolve basename wikilinks with files in other directory', () => {
+      const workspace = createTestWorkspace();
+      const noteA = createNoteFromMarkdown('Link to [[page b]]', './page-a.md');
+      const noteB = createNoteFromMarkdown('Page b', './folder/page b.md');
+      workspace.set(noteA).set(noteB);
+      expect(workspace.resolveLink(noteA, noteA.links[0])).toEqual(noteB.uri);
+    });
+
+    it('should resolve wikilinks that represent an absolute path', () => {
+      const workspace = createTestWorkspace();
+      const noteA = createNoteFromMarkdown(
+        'Link to [[/folder/page b]]',
+        '/page-a.md'
+      );
+      const noteB = createNoteFromMarkdown('Page b', '/folder/page b.md');
+      workspace.set(noteA).set(noteB);
+      expect(workspace.resolveLink(noteA, noteA.links[0])).toEqual(noteB.uri);
+    });
+
+    it('should resolve wikilinks that represent a relative path', () => {
+      const workspace = createTestWorkspace();
+      const noteA = createNoteFromMarkdown(
+        'Link to [[../two/page b]]',
+        '/path/one/page-a.md'
+      );
+      const noteB = createNoteFromMarkdown('Page b', '/path/one/page b.md');
+      const noteB2 = createNoteFromMarkdown('Page b 2', '/path/two/page b.md');
+      workspace
+        .set(noteA)
+        .set(noteB)
+        .set(noteB2);
+      expect(workspace.resolveLink(noteA, noteA.links[0])).toEqual(noteB2.uri);
+    });
+
+    it('should resolve ambiguous wikilinks', () => {
+      const workspace = createTestWorkspace();
+      const noteA = createNoteFromMarkdown('Link to [[page b]]', '/page-a.md');
+      const noteB = createNoteFromMarkdown('Page b', '/path/one/page b.md');
+      const noteB2 = createNoteFromMarkdown('Page b2', '/path/two/page b.md');
+      workspace
+        .set(noteA)
+        .set(noteB)
+        .set(noteB2);
+      expect(workspace.resolveLink(noteA, noteA.links[0])).toEqual(noteB.uri);
+    });
+
+    it('should resolve path wikilink even with other ambiguous notes', () => {
+      const noteA = createTestNote({
+        uri: '/path/to/page-a.md',
+        links: [{ slug: './more/page-b' }, { slug: 'yet/page-b' }],
+      });
+      const noteB1 = createTestNote({ uri: '/path/to/another/page-b.md' });
+      const noteB2 = createTestNote({ uri: '/path/to/more/page-b.md' });
+      const noteB3 = createTestNote({ uri: '/path/to/yet/page-b.md' });
+
+      const ws = createTestWorkspace();
+      ws.set(noteA)
+        .set(noteB1)
+        .set(noteB2)
+        .set(noteB3);
+
+      expect(ws.resolveLink(noteA, noteA.links[0])).toEqual(noteB2.uri);
+      expect(ws.resolveLink(noteA, noteA.links[1])).toEqual(noteB3.uri);
+    });
+
+    it('should resolve Foam wikilinks', () => {
+      const workspace = createTestWorkspace();
+      const noteA = createNoteFromMarkdown(
+        'Link to [[two/page b]] and [[one/page b]]',
+        '/page-a.md'
+      );
+      const noteB = createNoteFromMarkdown('Page b', '/path/one/page b.md');
+      const noteB2 = createNoteFromMarkdown('Page b2', '/path/two/page b.md');
+      workspace
+        .set(noteA)
+        .set(noteB)
+        .set(noteB2);
+      expect(workspace.resolveLink(noteA, noteA.links[0])).toEqual(noteB2.uri);
+      expect(workspace.resolveLink(noteA, noteA.links[1])).toEqual(noteB.uri);
+    });
+
+    it('should use wikilink definitions when available to resolve target', () => {
+      const ws = createTestWorkspace();
+      const noteA = createTestNote({
+        uri: '/somewhere/from/page-a.md',
+        links: [{ slug: 'page-b' }],
+      });
+      noteA.definitions.push({
+        label: 'page-b',
+        url: '../to/page-b.md',
+      });
+      const noteB = createTestNote({
+        uri: '/somewhere/to/page-b.md',
+      });
+      ws.set(noteA).set(noteB);
+      expect(ws.resolveLink(noteA, noteA.links[0])).toEqual(noteB.uri);
+    });
+
+    it('should support case insensitive wikilink resolution', () => {
+      const noteA = createTestNote({
+        uri: '/path/to/page-a.md',
+        links: [
+          // uppercased filename, lowercased slug
+          { slug: 'page-b' },
+          // lowercased filename, camelcased wikilink
+          { slug: 'Page-C' },
+          // lowercased filename, lowercased wikilink
+          { slug: 'page-d' },
+        ],
+      });
+      const noteB = createTestNote({ uri: '/somewhere/PAGE-B.md' });
+      const noteC = createTestNote({ uri: '/path/another/page-c.md' });
+      const noteD = createTestNote({ uri: '/path/another/page-d.md' });
+      const ws = createTestWorkspace()
+        .set(noteA)
+        .set(noteB)
+        .set(noteC)
+        .set(noteD);
+
+      expect(ws.resolveLink(noteA, noteA.links[0])).toEqual(noteB.uri);
+      expect(ws.resolveLink(noteA, noteA.links[1])).toEqual(noteC.uri);
+      expect(ws.resolveLink(noteA, noteA.links[2])).toEqual(noteD.uri);
+    });
+  });
+
+  describe('Markdown direct links', () => {
+    it('should support absolute path', () => {
+      const noteA = createTestNote({
+        uri: '/path/to/page-a.md',
+        links: [{ to: './another/page-b.md' }],
+      });
+      const noteB = createTestNote({
+        uri: '/path/to/another/page-b.md',
+        links: [{ to: '../../to/page-a.md' }],
+      });
+
+      const ws = createTestWorkspace();
+      ws.set(noteA).set(noteB);
+      expect(ws.resolveLink(noteA, noteA.links[0])).toEqual(noteB.uri);
+    });
+
+    it('should support relative path', () => {
+      const noteA = createTestNote({
+        uri: '/path/to/page-a.md',
+        links: [{ to: 'more/page-c.md' }],
+      });
+      const noteB = createTestNote({
+        uri: '/path/to/more/page-c.md',
+      });
+      const ws = createTestWorkspace();
+      ws.set(noteA).set(noteB);
+      expect(ws.resolveLink(noteA, noteA.links[0])).toEqual(noteB.uri);
+    });
+
+    it('should default to relative path', () => {
+      const noteA = createTestNote({
+        uri: '/path/to/page-a.md',
+        links: [{ to: 'page c.md' }],
+      });
+      const noteB = createTestNote({
+        uri: '/path/to/page c.md',
+      });
+      const ws = createTestWorkspace();
+      ws.set(noteA).set(noteB);
+      expect(ws.resolveLink(noteA, noteA.links[0])).toEqual(noteB.uri);
+    });
+  });
+});
+
+describe('Generation of markdown references', () => {
+  it('should generate links without file extension when includeExtension = false', () => {
+    const workspace = createTestWorkspace();
+    const noteA = createNoteFromMarkdown(
+      'Link to [[page-b]] and [[page-c]]',
+      '/dir1/page-a.md'
+    );
+    workspace
+      .set(noteA)
+      .set(createNoteFromMarkdown('Content of note B', '/dir1/page-b.md'))
+      .set(createNoteFromMarkdown('Content of note C', '/dir1/page-c.md'));
+
+    const references = createMarkdownReferences(workspace, noteA.uri, false);
+    expect(references.map(r => r.url)).toEqual(['page-b', 'page-c']);
+  });
+
+  it('should generate links with file extension when includeExtension = true', () => {
+    const workspace = createTestWorkspace();
+    const noteA = createNoteFromMarkdown(
+      'Link to [[page-b]] and [[page-c]]',
+      '/dir1/page-a.md'
+    );
+    workspace
+      .set(noteA)
+      .set(createNoteFromMarkdown('Content of note B', '/dir1/page-b.md'))
+      .set(createNoteFromMarkdown('Content of note C', '/dir1/page-c.md'));
+
+    const references = createMarkdownReferences(workspace, noteA.uri, true);
+    expect(references.map(r => r.url)).toEqual(['page-b.md', 'page-c.md']);
+  });
+
+  it('should use relative paths', () => {
+    const workspace = createTestWorkspace();
+    const noteA = createNoteFromMarkdown(
+      'Link to [[page-b]] and [[page-c]]',
+      '/dir1/page-a.md'
+    );
+    workspace
+      .set(noteA)
+      .set(createNoteFromMarkdown('Content of note B', '/dir2/page-b.md'))
+      .set(createNoteFromMarkdown('Content of note C', '/dir3/page-c.md'));
+
+    const references = createMarkdownReferences(workspace, noteA.uri, true);
+    expect(references.map(r => r.url)).toEqual([
+      '../dir2/page-b.md',
+      '../dir3/page-c.md',
+    ]);
+  });
+});

packages/foam-vscode/src/core/services/markdown-provider.ts

@@ -0,0 +1,210 @@
+import {
+  NoteLinkDefinition,
+  Resource,
+  ResourceLink,
+  ResourceParser,
+} from '../model/note';
+import { isNone, isSome } from '../utils';
+import { Logger } from '../utils/log';
+import { URI } from '../model/uri';
+import { FoamWorkspace } from '../model/workspace';
+import { IDataStore, FileDataStore, IMatcher } from '../services/datastore';
+import { IDisposable } from '../common/lifecycle';
+import { ResourceProvider } from '../model/provider';
+import { createMarkdownParser } from './markdown-parser';
+
+export class MarkdownResourceProvider implements ResourceProvider {
+  private disposables: IDisposable[] = [];
+
+  constructor(
+    private readonly matcher: IMatcher,
+    private readonly watcherInit?: (triggers: {
+      onDidChange: (uri: URI) => void;
+      onDidCreate: (uri: URI) => void;
+      onDidDelete: (uri: URI) => void;
+    }) => IDisposable[],
+    private readonly parser: ResourceParser = createMarkdownParser([]),
+    private readonly dataStore: IDataStore = new FileDataStore()
+  ) {}
+
+  async init(workspace: FoamWorkspace) {
+    const filesByFolder = await Promise.all(
+      this.matcher.include.map(glob =>
+        this.dataStore.list(glob, this.matcher.exclude)
+      )
+    );
+    const files = this.matcher
+      .match(filesByFolder.flat())
+      .filter(this.supports);
+
+    await Promise.all(
+      files.map(async uri => {
+        Logger.info('Found: ' + uri.toString());
+        const content = await this.dataStore.read(uri);
+        if (isSome(content)) {
+          workspace.set(this.parser.parse(uri, content));
+        }
+      })
+    );
+
+    this.disposables =
+      this.watcherInit?.({
+        onDidChange: async uri => {
+          if (this.matcher.isMatch(uri) && this.supports(uri)) {
+            const content = await this.dataStore.read(uri);
+            isSome(content) &&
+              workspace.set(await this.parser.parse(uri, content));
+          }
+        },
+        onDidCreate: async uri => {
+          if (this.matcher.isMatch(uri) && this.supports(uri)) {
+            const content = await this.dataStore.read(uri);
+            isSome(content) &&
+              workspace.set(await this.parser.parse(uri, content));
+          }
+        },
+        onDidDelete: uri => {
+          this.supports(uri) && workspace.delete(uri);
+        },
+      }) ?? [];
+  }
+
+  supports(uri: URI) {
+    return uri.isMarkdown();
+  }
+
+  read(uri: URI): Promise<string | null> {
+    return this.dataStore.read(uri);
+  }
+
+  async readAsMarkdown(uri: URI): Promise<string | null> {
+    let content = await this.dataStore.read(uri);
+    if (isSome(content) && uri.fragment) {
+      const resource = this.parser.parse(uri, content);
+      const section = Resource.findSection(resource, uri.fragment);
+      if (isSome(section)) {
+        const rows = content.split('\n');
+        content = rows
+          .slice(section.range.start.line, section.range.end.line)
+          .join('\n');
+      }
+    }
+    return content;
+  }
+
+  async fetch(uri: URI) {
+    const content = await this.read(uri);
+    return isSome(content) ? this.parser.parse(uri, content) : null;
+  }
+
+  resolveLink(
+    workspace: FoamWorkspace,
+    resource: Resource,
+    link: ResourceLink
+  ) {
+    let targetUri: URI | undefined;
+    switch (link.type) {
+      case 'wikilink': {
+        const definitionUri = resource.definitions.find(
+          def => def.label === link.target
+        )?.url;
+        if (isSome(definitionUri)) {
+          const definedUri = resource.uri.resolve(definitionUri);
+          targetUri =
+            workspace.find(definedUri, resource.uri)?.uri ??
+            URI.placeholder(definedUri.path);
+        } else {
+          const [target, section] = link.target.split('#');
+          targetUri =
+            target === ''
+              ? resource.uri
+              : workspace.find(target, resource.uri)?.uri ??
+                URI.placeholder(link.target);
+
+          if (section) {
+            targetUri = targetUri.withFragment(section);
+          }
+        }
+        break;
+      }
+      case 'link': {
+        const [target, section] = link.target.split('#');
+        targetUri =
+          workspace.find(target, resource.uri)?.uri ??
+          URI.placeholder(resource.uri.resolve(link.target).path);
+        if (section && !targetUri.isPlaceholder()) {
+          targetUri = targetUri.withFragment(section);
+        }
+        break;
+      }
+    }
+    return targetUri;
+  }
+
+  dispose() {
+    this.disposables.forEach(d => d.dispose());
+  }
+}
+
+export function createMarkdownReferences(
+  workspace: FoamWorkspace,
+  noteUri: URI,
+  includeExtension: boolean
+): NoteLinkDefinition[] {
+  const source = workspace.find(noteUri);
+  // Should never occur since we're already in a file,
+  if (source?.type !== 'note') {
+    console.warn(
+      `Note ${noteUri.toString()} note found in workspace when attempting \
+to generate markdown reference list`
+    );
+    return [];
+  }
+
+  return source.links
+    .filter(link => link.type === 'wikilink')
+    .map(link => {
+      const targetUri = workspace.resolveLink(source, link);
+      const target = workspace.find(targetUri);
+      if (isNone(target)) {
+        Logger.warn(
+          `Link ${targetUri.toString()} in ${noteUri.toString()} is not valid.`
+        );
+        return null;
+      }
+      if (target.type === 'placeholder') {
+        // no need to create definitions for placeholders
+        return null;
+      }
+
+      let relativeUri = target.uri.relativeTo(noteUri.getDirectory());
+      if (!includeExtension) {
+        relativeUri = relativeUri.changeExtension('*', '');
+      }
+
+      // [wikilink-text]: path/to/file.md "Page title"
+      return {
+        label:
+          link.rawText.indexOf('[[') > -1
+            ? link.rawText.substring(2, link.rawText.length - 2)
+            : link.rawText || link.label,
+        url: relativeUri.path,
+        title: target.title,
+      };
+    })
+    .filter(isSome)
+    .sort();
+}
+
+export function stringifyMarkdownLinkReferenceDefinition(
+  definition: NoteLinkDefinition
+) {
+  const url =
+    definition.url.indexOf(' ') > 0 ? `<${definition.url}>` : definition.url;
+  let text = `[${definition.label}]: ${url}`;
+  if (definition.title) {
+    text = `${text} "${definition.title}"`;
+  }
+
+  return text;
+}

packages/foam-vscode/src/core/utils/core.test.ts

@@ -1,45 +0,0 @@
-import { getShortestIdentifier } from './core';
-import { extractHashtags } from './index';
-import { Logger } from './log';
-
-Logger.setLevel('error');
-
-describe('getShortestIdentifier', () => {
-  const needle = '/project/car/todo';
-
-  test.each([
-    [['/project/home/todo', '/other/todo', '/something/else'], 'car/todo'],
-    [['/family/car/todo', '/other/todo'], 'project/car/todo'],
-    [[], 'todo'],
-  ])('Find shortest identifier', (haystack, id) => {
-    expect(getShortestIdentifier(needle, haystack)).toEqual(id);
-  });
-
-  it('should ignore same string in haystack', () => {
-    const haystack = [
-      needle,
-      '/project/home/todo',
-      '/other/todo',
-      '/something/else',
-    ];
-
-    expect(getShortestIdentifier(needle, haystack)).toEqual('car/todo');
-  });
-
-  it('should return best guess when no solution is possible', () => {
-    /**
-     * In this case there is no way to uniquely identify the element,
-     * our fallback is to just return the "least wrong" result, basically
-     * a full identifier
-     * This is an edge case that should never happen in a real repo
-     */
-    const haystack = [
-      '/parent/' + needle,
-      '/project/home/todo',
-      '/other/todo',
-      '/something/else',
-    ];
-
-    expect(getShortestIdentifier(needle, haystack)).toEqual('project/car/todo');
-  });
-});

packages/foam-vscode/src/core/utils/core.ts

@@ -1,19 +1,19 @@
 import crypto from 'crypto';
 
 export function isNotNull<T>(value: T | null): value is T {
-  return value != null; // eslint-disable-line
+  return value != null;
 }
 
 export function isSome<T>(
   value: T | null | undefined | void
 ): value is NonNullable<T> {
-  return value != null; // eslint-disable-line
+  return value != null;
 }
 
 export function isNone<T>(
   value: T | null | undefined | void
 ): value is null | undefined | void {
-  return value == null; // eslint-disable-line
+  return value == null;
 }
 
 export function isNumeric(value: string): boolean {
@@ -25,43 +25,3 @@ export const hash = (text: string) =>
     .createHash('sha1')
     .update(text)
     .digest('hex');
-
-/**
- * Returns the minimal identifier for the given string amongst others
- *
- * @param forValue the value to compute the identifier for
- * @param amongst the set of strings within which to find the identifier
- */
-export const getShortestIdentifier = (
-  forValue: string,
-  amongst: string[]
-): string => {
-  const needleTokens = forValue.split('/').reverse();
-  const haystack = amongst
-    .filter(value => value !== forValue)
-    .map(value => value.split('/').reverse());
-
-  let tokenIndex = 0;
-  let res = needleTokens;
-  while (tokenIndex < needleTokens.length) {
-    for (let j = haystack.length - 1; j >= 0; j--) {
-      if (
-        haystack[j].length < tokenIndex ||
-        needleTokens[tokenIndex] !== haystack[j][tokenIndex]
-      ) {
-        haystack.splice(j, 1);
-      }
-    }
-    if (haystack.length === 0) {
-      res = needleTokens.splice(0, tokenIndex + 1);
-      break;
-    }
-    tokenIndex++;
-  }
-  const identifier = res
-    .filter(token => token.trim() !== '')
-    .reverse()
-    .join('/');
-
-  return identifier;
-};

packages/foam-vscode/src/core/utils/index.ts

@@ -2,12 +2,6 @@ import { titleCase } from 'title-case';
 export { extractHashtags, extractTagsFromProp } from './hashtags';
 export * from './core';
 
-export function dropExtension(path: string): string {
-  const parts = path.split('.');
-  parts.pop();
-  return parts.join('.');
-}
-
 /**
  *
  * @param filename

packages/foam-vscode/src/core/utils/log.ts

@@ -58,7 +58,9 @@ export class ConsoleLogger extends BaseLogger {
 }
 
 export class NoOpLogger extends BaseLogger {
-  log(_l: LogLevel, _m?: string, ..._p: any[]): void {}
+  log(_l: LogLevel, _m?: string, ..._p: any[]): void {
+    // do nothing
+  }
 }
 
 export class Logger {

packages/foam-vscode/src/core/utils/path.ts

@@ -0,0 +1,192 @@
+import { CharCode } from '../common/charCode';
+import { posix } from 'path';
+import { promises, constants } from 'fs';
+
+/**
+ * Converts filesystem path to POSIX path. Supported inputs are:
+ *   - Windows path starting with a drive letter, e.g. C:\dir\file.ext
+ *   - UNC path for a shared file, e.g. \\server\share\path\file.ext
+ *   - POSIX path, e.g. /dir/file.ext
+ *
+ * @param path A supported filesystem path.
+ * @returns [path, authority] where path is a POSIX representation for the
+ *     given input and authority is undefined except for UNC paths.
+ */
+export function fromFsPath(path: string): [string, string] {
+  let authority: string;
+  if (isUNCShare(path)) {
+    [path, authority] = parseUNCShare(path);
+    path = path.replace(/\\/g, '/');
+  } else if (hasDrive(path)) {
+    path = '/' + path[0].toUpperCase() + path.substr(1).replace(/\\/g, '/');
+  } else if (path[0] === '/' && hasDrive(path, 1)) {
+    // POSIX representation of a Windows path: just normalize drive letter case
+    path = '/' + path[1].toUpperCase() + path.substr(2);
+  }
+  return [path, authority];
+}
+
+/**
+ * Converts a POSIX path to a filesystem path.
+ *
+ * @param path A POSIX path.
+ * @param authority An optional authority used to build UNC paths. This only
+ *     makes sense for the Windows platform.
+ * @returns A platform-specific representation of the given POSIX path.
+ */
+export function toFsPath(path: string, authority?: string): string {
+  if (path[0] === '/' && hasDrive(path, 1)) {
+    path = path.substr(1).replace(/\//g, '\\');
+    if (authority) {
+      path = `\\\\${authority}${path}`;
+    }
+  }
+  return path;
+}
+
+/**
+ * Extracts the containing directory of a POSIX path, e.g.
+ *    - /d1/d2/f.ext -> /d1/d2
+ *    - /d1/d2 -> /d1
+ *
+ * @param path A POSIX path.
+ * @returns true if the path is absolute, false otherwise.
+ */
+export function isAbsolute(path: string): boolean {
+  return posix.isAbsolute(path);
+}
+
+/**
+ * Extracts the containing directory of a POSIX path, e.g.
+ *    - /d1/d2/f.ext -> /d1/d2
+ *    - /d1/d2 -> /d1
+ *
+ * @param path A POSIX path.
+ * @returns The containing directory of the given path.
+ */
+export function getDirectory(path: string): string {
+  return posix.dirname(path);
+}
+
+/**
+ * Extracts the basename of a POSIX path, e.g. /d/f.ext -> f.ext.
+ *
+ * @param path A POSIX path.
+ * @returns The basename of the given path.
+ */
+export function getBasename(path: string): string {
+  return posix.basename(path);
+}
+
+/**
+ * Extracts the name of a POSIX path, e.g. /d/f.ext -> f.
+ *
+ * @param path A POSIX path.
+ * @returns The name of the given path.
+ */
+export function getName(path: string): string {
+  return changeExtension(getBasename(path), '*', '');
+}
+
+/**
+ * Extracts the extension of a POSIX path, e.g.
+ *    - /d/f.ext -> .ext
+ *    - /d/f.g.ext -> .ext
+ *    - /d/f -> ''
+ *
+ * @param path A POSIX path.
+ * @returns The extension of the given path.
+ */
+export function getExtension(path: string): string {
+  return posix.extname(path);
+}
+
+/**
+ * Changes a POSIX path matching some extension to have another extension.
+ *
+ * @param path A POSIX path.
+ * @param from The required current extension, or '*' to match any extension.
+ * @param to The target extension.
+ * @returns A POSIX path with its extension possibly changed.
+ */
+export function changeExtension(
+  path: string,
+  from: string,
+  to: string
+): string {
+  const old = getExtension(path);
+  if ((from === '*' && old !== to) || old === from) {
+    path = path.substring(0, path.length - old.length);
+    return to ? path + to : path;
+  }
+  return path;
+}
+
+/**
+ * Joins a number of POSIX paths into a single POSIX path, e.g.
+ *    - /d1, d2, f.ext -> /d1/d2/f.ext
+ *    - /d1/d2, .., f.ext -> /d1/f.ext
+ *
+ * @param paths A variable number of POSIX paths.
+ * @returns A POSIX path built from the given POSIX paths.
+ */
+export function joinPath(...paths: string[]): string {
+  return posix.join(...paths);
+}
+
+/**
+ * Makes a POSIX path relative to another POSIX path, e.g.
+ *    - /d1/d2 relative to /d1 -> d2
+ *    - /d1/d2 relative to /d1/d3 -> ../d2
+ *
+ * @param path The POSIX path to be made relative.
+ * @param basePath The POSIX base path.
+ * @returns A POSIX path relative to the base path.
+ */
+export function relativeTo(path: string, basePath: string): string {
+  return posix.relative(basePath, path);
+}
+
+/**
+ * Asynchronously checks if there is an accessible file for a path.
+ *
+ * @param fsPath A filesystem-specific path.
+ * @returns true if an accesible file exists, false otherwise.
+ */
+export async function existsInFs(fsPath: string) {
+  try {
+    await promises.access(fsPath, constants.F_OK);
+    return true;
+  } catch (e) {
+    return false;
+  }
+}
+
+function hasDrive(path: string, idx = 0): boolean {
+  if (path.length <= idx) {
+    return false;
+  }
+  const c = path.charCodeAt(idx);
+  return (
+    ((c >= CharCode.A && c <= CharCode.Z) ||
+      (c >= CharCode.a && c <= CharCode.z)) &&
+    path.charCodeAt(idx + 1) === CharCode.Colon
+  );
+}
+
+function isUNCShare(fsPath: string): boolean {
+  return (
+    fsPath.length >= 2 &&
+    fsPath.charCodeAt(0) === CharCode.Backslash &&
+    fsPath.charCodeAt(1) === CharCode.Backslash
+  );
+}
+
+function parseUNCShare(uncPath: string): [string, string] {
+  const idx = uncPath.indexOf('\\', 2);
+  if (idx === -1) {
+    return [uncPath.substring(2), '\\'];
+  } else {
+    return [uncPath.substring(2, idx), uncPath.substring(idx) || '\\'];
+  }
+}

packages/foam-vscode/src/core/utils/slug.ts

@@ -1,5 +0,0 @@
-import GithubSlugger from 'github-slugger';
-import { URI } from '../model/uri';
-
-export const uriToSlug = (uri: URI): string =>
-  GithubSlugger.slug(URI.getBasename(uri));

packages/foam-vscode/src/dated-notes.spec.ts

@@ -1,7 +1,6 @@
 import { workspace } from 'vscode';
 import { createDailyNoteIfNotExists, getDailyNotePath } from './dated-notes';
-import { URI } from './core/model/uri';
-import { isWindows } from './utils';
+import { isWindows } from './core/common/platform';
 import {
   cleanWorkspace,
   closeEditors,
@@ -20,11 +19,9 @@ describe('getDailyNotePath', () => {
   test('Adds the root directory to relative directories', async () => {
     const config = 'journal';
 
-    const expectedPath = URI.joinPath(
-      fromVsCodeUri(workspace.workspaceFolders[0].uri),
-      config,
-      `${isoDate}.md`
-    );
+    const expectedPath = fromVsCodeUri(
+      workspace.workspaceFolders[0].uri
+    ).joinPath(config, `${isoDate}.md`);
 
     const oldValue = await workspace
       .getConfiguration('foam')
@@ -34,8 +31,8 @@ describe('getDailyNotePath', () => {
       .update('openDailyNote.directory', config);
     const foamConfiguration = workspace.getConfiguration('foam');
 
-    expect(URI.toFsPath(getDailyNotePath(foamConfiguration, date))).toEqual(
-      URI.toFsPath(expectedPath)
+    expect(getDailyNotePath(foamConfiguration, date).toFsPath()).toEqual(
+      expectedPath.toFsPath()
     );
 
     await workspace
@@ -60,7 +57,7 @@ describe('getDailyNotePath', () => {
       .update('openDailyNote.directory', config);
     const foamConfiguration = workspace.getConfiguration('foam');
 
-    expect(URI.toFsPath(getDailyNotePath(foamConfiguration, date))).toMatch(
+    expect(getDailyNotePath(foamConfiguration, date).toFsPath()).toMatch(
       expectedPath
     );
 

packages/foam-vscode/src/dated-notes.ts

@@ -1,7 +1,7 @@
 import { workspace, WorkspaceConfiguration } from 'vscode';
 import dateFormat from 'dateformat';
-import { isAbsolute } from 'path';
-import { focusNote, pathExists } from './utils';
+import { existsInFs } from './core/utils/path';
+import { focusNote } from './utils';
 import { URI } from './core/model/uri';
 import { fromVsCodeUri } from './utils/vsc-utils';
 import { NoteFactory } from './services/templates';
@@ -16,7 +16,7 @@ import { NoteFactory } from './services/templates';
  */
 export async function openDailyNoteFor(date?: Date) {
   const foamConfiguration = workspace.getConfiguration('foam');
-  const currentDate = date !== undefined ? date : new Date();
+  const currentDate = date instanceof Date ? date : new Date();
 
   const dailyNotePath = getDailyNotePath(foamConfiguration, currentDate);
 
@@ -25,7 +25,12 @@ export async function openDailyNoteFor(date?: Date) {
     dailyNotePath,
     currentDate
   );
-  await focusNote(dailyNotePath, isNew);
+  // if a new file is created, the editor is automatically created
+  // but forcing the focus will block the template placeholders from working
+  // so we only explicitly focus on the note if the file already exists
+  if (!isNew) {
+    await focusNote(dailyNotePath, isNew);
+  }
 }
 
 /**
@@ -45,16 +50,16 @@ export function getDailyNotePath(
   configuration: WorkspaceConfiguration,
   date: Date
 ): URI {
-  const dailyNoteDirectory: string =
-    configuration.get('openDailyNote.directory') ?? '.';
+  const dailyNoteDirectory = URI.file(
+    configuration.get('openDailyNote.directory') ?? '.'
+  );
   const dailyNoteFilename = getDailyNoteFileName(configuration, date);
 
-  if (isAbsolute(dailyNoteDirectory)) {
-    return URI.joinPath(URI.file(dailyNoteDirectory), dailyNoteFilename);
+  if (dailyNoteDirectory.isAbsolute()) {
+    return dailyNoteDirectory.joinPath(dailyNoteFilename);
   } else {
-    return URI.joinPath(
-      fromVsCodeUri(workspace.workspaceFolders[0].uri),
-      dailyNoteDirectory,
+    return fromVsCodeUri(workspace.workspaceFolders[0].uri).joinPath(
+      dailyNoteDirectory.path,
       dailyNoteFilename
     );
   }
@@ -101,7 +106,7 @@ export async function createDailyNoteIfNotExists(
   dailyNotePath: URI,
   targetDate: Date
 ) {
-  if (await pathExists(dailyNotePath)) {
+  if (await existsInFs(dailyNotePath.toFsPath())) {
     return false;
   }
 
@@ -109,7 +114,7 @@ export async function createDailyNoteIfNotExists(
     configuration.get('openDailyNote.titleFormat') ??
     configuration.get('openDailyNote.filenameFormat');
 
-  const templateFallbackText: string = `---
+  const templateFallbackText = `---
 foam_template:
   name: New Daily Note
   description: Foam's default daily note template

packages/foam-vscode/src/extension.ts

@@ -1,5 +1,5 @@
 import { workspace, ExtensionContext, window } from 'vscode';
-import { MarkdownResourceProvider } from './core/markdown-provider';
+import { MarkdownResourceProvider } from './core/services/markdown-provider';
 import { bootstrap } from './core/model/foam';
 import { FileDataStore, Matcher } from './core/services/datastore';
 import { Logger } from './core/utils/log';

packages/foam-vscode/src/features/backlinks.spec.ts

@@ -37,7 +37,7 @@ describe('Backlinks panel', () => {
   const noteB = createTestNote({
     root: rootUri,
     uri: './note-b.md',
-    links: [{ slug: 'note-a' }, { slug: 'note-a' }],
+    links: [{ slug: 'note-a' }, { slug: 'note-a#section' }],
   });
   const noteC = createTestNote({
     root: rootUri,

packages/foam-vscode/src/features/backlinks.ts

@@ -63,7 +63,10 @@ export class BacklinksTreeDataProvider
       const backlinkRefs = Promise.all(
         resource.links
           .filter(link =>
-            URI.isEqual(this.workspace.resolveLink(resource, link), uri)
+            this.workspace
+              .resolveLink(resource, link)
+              .asPlain()
+              .isEqual(uri)
           )
           .map(async link => {
             const item = new BacklinkTreeItem(resource, link);
@@ -72,7 +75,7 @@ export class BacklinksTreeDataProvider
             ).split('\n');
             if (link.range.start.line < lines.length) {
               const line = lines[link.range.start.line];
-              let start = Math.max(0, link.range.start.character - 15);
+              const start = Math.max(0, link.range.start.character - 15);
               const ellipsis = start === 0 ? '' : '...';
 
               item.label = `${link.range.start.line}: ${ellipsis}${line.substr(
@@ -93,7 +96,9 @@ export class BacklinksTreeDataProvider
     }
 
     const backlinksByResourcePath = groupBy(
-      this.graph.getConnections(uri).filter(c => URI.isEqual(c.target, uri)),
+      this.graph
+        .getConnections(uri)
+        .filter(c => c.target.asPlain().isEqual(uri)),
       b => b.source.path
     );
 

packages/foam-vscode/src/features/copy-without-brackets.spec.ts

@@ -1,21 +1,17 @@
-// import { env, window, Uri, Position, Selection, commands } from 'vscode';
-// import * as vscode from 'vscode';
+import { env, Position, Selection, commands } from 'vscode';
+import {
+  createFile,
+  getUriInWorkspace,
+  showInEditor,
+} from '../test/test-utils-vscode';
 
 describe('copyWithoutBrackets', () => {
-  it('should pass CI', () => {
-    expect(true).toBe(true);
+  it('should get the input from the active editor selection', async () => {
+    const { uri } = await createFile('This is my [[test-content]].');
+    const { editor } = await showInEditor(uri);
+    editor.selection = new Selection(new Position(0, 0), new Position(1, 0));
+    await commands.executeCommand('foam-vscode.copy-without-brackets');
+    const value = await env.clipboard.readText();
+    expect(value).toEqual('This is my Test Content.');
   });
-  // it('should get the input from the active editor selection', async () => {
-  //   const doc = await vscode.workspace.openTextDocument(
-  //     Uri.parse('untitled:/hello.md')
-  //   );
-  //   const editor = await window.showTextDocument(doc);
-  //   editor.edit(builder => {
-  //     builder.insert(new Position(0, 0), 'This is my [[test-content]].');
-  //   });
-  //   editor.selection = new Selection(new Position(0, 0), new Position(1, 0));
-  //   await commands.executeCommand('foam-vscode.copy-without-brackets');
-  //   const value = await env.clipboard.readText();
-  //   expect(value).toEqual('This is my Test Content.');
-  // });
 });

packages/foam-vscode/src/features/create-from-template.spec.ts

@@ -1,7 +1,6 @@
+import { Uri, commands, window, workspace } from 'vscode';
 import { URI } from '../core/model/uri';
-import path from 'path';
 import { toVsCodeUri } from '../utils/vsc-utils';
-import { commands, window, workspace } from 'vscode';
 import { createFile } from '../test/test-utils-vscode';
 import * as editor from '../services/editor';
 
@@ -122,12 +121,12 @@ Template A
     });
 
     it('should create a new template', async () => {
-      const template = path.join(
-        workspace.workspaceFolders[0].uri.fsPath,
+      const template = Uri.joinPath(
+        workspace.workspaceFolders[0].uri,
         '.foam',
         'templates',
         'hello-world.md'
-      );
+      ).fsPath;
 
       window.showInputBox = jest.fn(() => {
         return Promise.resolve(template);
@@ -142,12 +141,12 @@ Template A
 
     it('can be cancelled', async () => {
       // This is the default template which would be created.
-      const template = path.join(
-        workspace.workspaceFolders[0].uri.fsPath,
+      const template = Uri.joinPath(
+        workspace.workspaceFolders[0].uri,
         '.foam',
         'templates',
         'new-template.md'
-      );
+      ).fsPath;
       window.showInputBox = jest.fn(() => {
         return Promise.resolve(undefined);
       });

packages/foam-vscode/src/features/create-from-template.ts

@@ -1,5 +1,3 @@
-import { URI } from '../core/model/uri';
-import * as path from 'path';
 import { commands, ExtensionContext, QuickPickItem, window } from 'vscode';
 import { FoamFeature } from '../types';
 import {
@@ -60,7 +58,7 @@ async function askUserForTemplate() {
     await Promise.all(
       templates.map(async templateUri => {
         const metadata = await getTemplateMetadata(templateUri);
-        metadata.set('templatePath', path.basename(templateUri.path));
+        metadata.set('templatePath', templateUri.getBasename());
         return metadata;
       })
     )
@@ -105,7 +103,7 @@ const feature: FoamFeature = {
           const templateFilename =
             (selectedTemplate as QuickPickItem).description ||
             (selectedTemplate as QuickPickItem).label;
-          const templateUri = URI.joinPath(TEMPLATES_DIR, templateFilename);
+          const templateUri = TEMPLATES_DIR.joinPath(templateFilename);
 
           const resolver = new Resolver(new Map(), new Date());
 

packages/foam-vscode/src/features/dataviz.ts

@@ -1,7 +1,5 @@
 import * as vscode from 'vscode';
-import * as path from 'path';
 import { FoamFeature } from '../types';
-import { URI } from '../core/model/uri';
 import { TextDecoder } from 'util';
 import { getGraphStyle, getTitleMaxLength } from '../settings';
 import { isSome } from '../utils';
@@ -77,7 +75,7 @@ function generateGraphData(foam: Foam) {
 
   foam.workspace.list().forEach(n => {
     const type = n.type === 'note' ? n.properties.type ?? 'note' : n.type;
-    const title = n.type === 'note' ? n.title : path.basename(n.uri.path);
+    const title = n.type === 'note' ? n.title : n.uri.getBasename();
     graph.nodeInfo[n.uri.path] = {
       id: n.uri.path,
       type: type,
@@ -92,7 +90,7 @@ function generateGraphData(foam: Foam) {
       source: c.source.path,
       target: c.target.path,
     });
-    if (URI.isPlaceholder(c.target)) {
+    if (c.target.isPlaceholder()) {
       graph.nodeInfo[c.target.path] = {
         id: c.target.path,
         type: 'placeholder',
@@ -133,7 +131,7 @@ async function createGraphPanel(foam: Foam, context: vscode.ExtensionContext) {
   panel.webview.onDidReceiveMessage(
     async message => {
       switch (message.type) {
-        case 'webviewDidLoad':
+        case 'webviewDidLoad': {
           const styles = getGraphStyle();
           panel.webview.postMessage({
             type: 'didUpdateStyle',
@@ -141,8 +139,8 @@ async function createGraphPanel(foam: Foam, context: vscode.ExtensionContext) {
           });
           updateGraph(panel, foam);
           break;
-
-        case 'webviewDidSelectNode':
+        }
+        case 'webviewDidSelectNode': {
           const noteUri = vscode.Uri.parse(message.payload);
           const selectedNote = foam.workspace.get(fromVsCodeUri(noteUri));
 
@@ -153,10 +151,11 @@ async function createGraphPanel(foam: Foam, context: vscode.ExtensionContext) {
             vscode.window.showTextDocument(doc, vscode.ViewColumn.One);
           }
           break;
-
-        case 'error':
+        }
+        case 'error': {
           Logger.error('An error occurred in the graph view', message.payload);
           break;
+        }
       }
     },
     undefined,
@@ -170,25 +169,27 @@ async function getWebviewContent(
   context: vscode.ExtensionContext,
   panel: vscode.WebviewPanel
 ) {
-  const datavizPath = [context.extensionPath, 'static', 'dataviz'];
+  const datavizPath = vscode.Uri.joinPath(
+    vscode.Uri.file(context.extensionPath),
+    'static',
+    'dataviz'
+  );
 
   const getWebviewUri = (fileName: string) =>
-    panel.webview.asWebviewUri(
-      vscode.Uri.file(path.join(...datavizPath, fileName))
-    );
+    panel.webview.asWebviewUri(vscode.Uri.joinPath(datavizPath, fileName));
 
   const indexHtml = await vscode.workspace.fs.readFile(
-    vscode.Uri.file(path.join(...datavizPath, 'index.html'))
+    vscode.Uri.joinPath(datavizPath, 'index.html')
   );
 
   // Replace the script paths with the appropriate webview URI.
   const filled = new TextDecoder('utf-8')
     .decode(indexHtml)
-    .replace(/<script data-replace src="([^"]+")/g, match => {
-      const fileName = match
-        .slice('<script data-replace src="'.length, -1)
-        .trim();
-      return '<script src="' + getWebviewUri(fileName).toString() + '"';
+    .replace(/data-replace (src|href)="[^"]+"/g, match => {
+      const i = match.indexOf(' ');
+      const j = match.indexOf('=');
+      const uri = getWebviewUri(match.slice(j + 2, -1).trim());
+      return match.slice(i + 1, j) + '="' + uri.toString() + '"';
     });
 
   return filled;

packages/foam-vscode/src/features/document-decorator.ts

@@ -1,6 +1,5 @@
 import { debounce } from 'lodash';
 import * as vscode from 'vscode';
-import { URI } from '../core/model/uri';
 import { FoamFeature } from '../types';
 import {
   ConfigurationMonitor,
@@ -9,21 +8,15 @@ import {
 import { ResourceParser } from '../core/model/note';
 import { FoamWorkspace } from '../core/model/workspace';
 import { Foam } from '../core/model/foam';
+import { Range } from '../core/model/range';
 import { fromVsCodeUri } from '../utils/vsc-utils';
 
 export const CONFIG_KEY = 'decorations.links.enable';
 
-const linkDecoration = vscode.window.createTextEditorDecorationType({
-  rangeBehavior: vscode.DecorationRangeBehavior.ClosedClosed,
-  textDecoration: 'none',
-  color: { id: 'textLink.foreground' },
-  cursor: 'pointer',
-});
-
 const placeholderDecoration = vscode.window.createTextEditorDecorationType({
   rangeBehavior: vscode.DecorationRangeBehavior.ClosedClosed,
   textDecoration: 'none',
-  color: { id: 'editorWarning.foreground' },
+  color: { id: 'foam.placeholder' },
   cursor: 'pointer',
 });
 
@@ -32,24 +25,31 @@ const updateDecorations = (
   parser: ResourceParser,
   workspace: FoamWorkspace
 ) => (editor: vscode.TextEditor) => {
-  if (!editor || !areDecorationsEnabled()) {
+  if (
+    !editor ||
+    !areDecorationsEnabled() ||
+    editor.document.languageId !== 'markdown'
+  ) {
     return;
   }
   const note = parser.parse(
     fromVsCodeUri(editor.document.uri),
     editor.document.getText()
   );
-  let linkRanges = [];
-  let placeholderRanges = [];
+  const placeholderRanges = [];
   note.links.forEach(link => {
     const linkUri = workspace.resolveLink(note, link);
-    if (URI.isPlaceholder(linkUri)) {
-      placeholderRanges.push(link.range);
-    } else {
-      linkRanges.push(link.range);
+    if (linkUri.isPlaceholder()) {
+      placeholderRanges.push(
+        Range.create(
+          link.range.start.line,
+          link.range.start.character + 2,
+          link.range.end.line,
+          link.range.end.character - 2
+        )
+      );
     }
   });
-  editor.setDecorations(linkDecoration, linkRanges);
   editor.setDecorations(placeholderDecoration, placeholderRanges);
 };
 
@@ -79,7 +79,6 @@ const feature: FoamFeature = {
 
     context.subscriptions.push(
       areDecorationsEnabled,
-      linkDecoration,
       placeholderDecoration,
       vscode.window.onDidChangeActiveTextEditor(editor => {
         activeEditor = editor;

packages/foam-vscode/src/features/hover-provider.spec.ts

@@ -1,8 +1,6 @@
 import * as vscode from 'vscode';
-import {
-  createMarkdownParser,
-  MarkdownResourceProvider,
-} from '../core/markdown-provider';
+import { createMarkdownParser } from '../core/services/markdown-parser';
+import { MarkdownResourceProvider } from '../core/services/markdown-provider';
 import { FoamGraph } from '../core/model/graph';
 import { FoamWorkspace } from '../core/model/workspace';
 import { Matcher } from '../core/services/datastore';

packages/foam-vscode/src/features/hover-provider.ts

@@ -1,6 +1,5 @@
 import { uniqWith } from 'lodash';
 import * as vscode from 'vscode';
-import { URI } from '../core/model/uri';
 import { FoamFeature } from '../types';
 import { getNoteTooltip, mdDocSelector, isSome } from '../utils';
 import { fromVsCodeUri, toVsCodeRange } from '../utils/vsc-utils';
@@ -81,9 +80,9 @@ export class HoverProvider implements vscode.HoverProvider {
     const sources = uniqWith(
       this.graph
         .getBacklinks(targetUri)
-        .filter(link => !URI.isEqual(link.source, documentUri))
+        .filter(link => !link.source.isEqual(documentUri))
         .map(link => link.source),
-      URI.isEqual
+      (u1, u2) => u1.isEqual(u2)
     );
 
     const links = sources.slice(0, 10).map(ref => {
@@ -101,7 +100,7 @@ export class HoverProvider implements vscode.HoverProvider {
     );
 
     let mdContent = null;
-    if (!URI.isPlaceholder(targetUri)) {
+    if (!targetUri.isPlaceholder()) {
       const content: string = await this.workspace.readAsMarkdown(targetUri);
 
       mdContent = isSome(content)

packages/foam-vscode/src/features/janitor.ts

@@ -7,7 +7,6 @@ import {
 } from 'vscode';
 import * as fs from 'fs';
 import { FoamFeature } from '../types';
-import { URI } from '../core/model/uri';
 
 import {
   getWikilinkDefinitionSetting,
@@ -69,7 +68,7 @@ async function janitor(foam: Foam) {
 async function runJanitor(foam: Foam) {
   const notes: Resource[] = foam.workspace
     .list()
-    .filter(r => URI.isMarkdownFile(r.uri));
+    .filter(r => r.uri.isMarkdown());
 
   let updatedHeadingCount = 0;
   let updatedDefinitionListCount = 0;
@@ -86,11 +85,11 @@ async function runJanitor(foam: Foam) {
   );
 
   const dirtyNotes = notes.filter(note =>
-    dirtyEditorsFileName.includes(URI.toFsPath(note.uri))
+    dirtyEditorsFileName.includes(note.uri.toFsPath())
   );
 
   const nonDirtyNotes = notes.filter(
-    note => !dirtyEditorsFileName.includes(URI.toFsPath(note.uri))
+    note => !dirtyEditorsFileName.includes(note.uri.toFsPath())
   );
 
   const wikilinkSetting = getWikilinkDefinitionSetting();
@@ -98,12 +97,12 @@ async function runJanitor(foam: Foam) {
   // Apply Text Edits to Non Dirty Notes using fs module just like CLI
 
   const fileWritePromises = nonDirtyNotes.map(note => {
-    let heading = generateHeading(note);
+    const heading = generateHeading(note);
     if (heading) {
       updatedHeadingCount += 1;
     }
 
-    let definitions =
+    const definitions =
       wikilinkSetting === LinkReferenceDefinitionsSetting.off
         ? null
         : generateLinkReferences(
@@ -126,7 +125,7 @@ async function runJanitor(foam: Foam) {
     text = definitions ? applyTextEdit(text, definitions) : text;
     text = heading ? applyTextEdit(text, heading) : text;
 
-    return fs.promises.writeFile(URI.toFsPath(note.uri), text);
+    return fs.promises.writeFile(note.uri.toFsPath(), text);
   });
 
   await Promise.all(fileWritePromises);
@@ -136,12 +135,12 @@ async function runJanitor(foam: Foam) {
   for (const doc of dirtyTextDocuments) {
     const editor = await window.showTextDocument(doc);
     const note = dirtyNotes.find(
-      n => URI.toFsPath(n.uri) === editor.document.uri.fsPath
+      n => n.uri.toFsPath() === editor.document.uri.fsPath
     )!;
 
     // Get edits
     const heading = generateHeading(note);
-    let definitions =
+    const definitions =
       wikilinkSetting === LinkReferenceDefinitionsSetting.off
         ? null
         : generateLinkReferences(

packages/foam-vscode/src/features/link-completion.spec.ts

@@ -1,4 +1,5 @@
 import * as vscode from 'vscode';
+import { createMarkdownParser } from '../core/services/markdown-parser';
 import { FoamGraph } from '../core/model/graph';
 import { FoamWorkspace } from '../core/model/workspace';
 import { createTestNote } from '../test/test-utils';
@@ -9,15 +10,20 @@ import {
   showInEditor,
 } from '../test/test-utils-vscode';
 import { fromVsCodeUri } from '../utils/vsc-utils';
-import { CompletionProvider } from './link-completion';
+import {
+  CompletionProvider,
+  SectionCompletionProvider,
+} from './link-completion';
 
 describe('Link Completion', () => {
+  const parser = createMarkdownParser([]);
   const root = fromVsCodeUri(vscode.workspace.workspaceFolders[0].uri);
   const ws = new FoamWorkspace();
   ws.set(
     createTestNote({
       root,
       uri: 'file-name.md',
+      sections: ['Section One', 'Section Two'],
     })
   )
     .set(
@@ -82,24 +88,74 @@ describe('Link Completion', () => {
   });
 
   it('should return notes with unique identifiers, and placeholders', async () => {
-    const { uri } = await createFile('[[file]] [[');
+    for (const text of ['[[', '[[file]] [[', '[[file]] #tag [[']) {
+      const { uri } = await createFile(text);
+      const { doc } = await showInEditor(uri);
+      const provider = new CompletionProvider(ws, graph);
+
+      const links = await provider.provideCompletionItems(
+        doc,
+        new vscode.Position(0, text.length)
+      );
+
+      expect(links.items.length).toEqual(5);
+      expect(new Set(links.items.map(i => i.insertText))).toEqual(
+        new Set([
+          'to/file',
+          'another/file',
+          'File name with spaces',
+          'file-name',
+          'placeholder text',
+        ])
+      );
+    }
+  });
+
+  it('should return sections for other notes', async () => {
+    for (const text of [
+      '[[file-name#',
+      '[[file]] [[file-name#',
+      '[[file]] #tag [[file-name#',
+    ]) {
+      const { uri } = await createFile(text);
+      const { doc } = await showInEditor(uri);
+      const provider = new SectionCompletionProvider(ws);
+
+      const links = await provider.provideCompletionItems(
+        doc,
+        new vscode.Position(0, text.length)
+      );
+
+      expect(new Set(links.items.map(i => i.label))).toEqual(
+        new Set(['Section One', 'Section Two'])
+      );
+    }
+  });
+
+  it('should return sections within the note', async () => {
+    const { uri, content } = await createFile(`
+# Section 1
+
+Content of section 1
+
+# Section 2
+
+Content of section 2
+
+[[#
+`);
+    ws.set(parser.parse(uri, content));
+
     const { doc } = await showInEditor(uri);
-    const provider = new CompletionProvider(ws, graph);
+    const provider = new SectionCompletionProvider(ws);
 
     const links = await provider.provideCompletionItems(
       doc,
-      new vscode.Position(0, 11)
+      new vscode.Position(9, 3)
     );
 
-    expect(links.items.length).toEqual(5);
-    expect(new Set(links.items.map(i => i.insertText))).toEqual(
-      new Set([
-        'to/file',
-        'another/file',
-        'File name with spaces',
-        'file-name',
-        'placeholder text',
-      ])
+    expect(new Set(links.items.map(i => i.label))).toEqual(
+      new Set(['Section 1', 'Section 2'])
     );
   });
 });

packages/foam-vscode/src/features/link-completion.ts

@@ -1,12 +1,14 @@
 import * as vscode from 'vscode';
 import { Foam } from '../core/model/foam';
 import { FoamGraph } from '../core/model/graph';
-import { Resource } from '../core/model/note';
 import { URI } from '../core/model/uri';
 import { FoamWorkspace } from '../core/model/workspace';
 import { FoamFeature } from '../types';
 import { getNoteTooltip, mdDocSelector } from '../utils';
-import { toVsCodeUri } from '../utils/vsc-utils';
+import { fromVsCodeUri, toVsCodeUri } from '../utils/vsc-utils';
+
+export const WIKILINK_REGEX = /\[\[[^[\]]*(?!.*\]\])/;
+export const SECTION_REGEX = /\[\[([^[\]]*#(?!.*\]\]))/;
 
 const feature: FoamFeature = {
   activate: async (
@@ -19,11 +21,74 @@ const feature: FoamFeature = {
         mdDocSelector,
         new CompletionProvider(foam.workspace, foam.graph),
         '['
+      ),
+      vscode.languages.registerCompletionItemProvider(
+        mdDocSelector,
+        new SectionCompletionProvider(foam.workspace),
+        '#'
       )
     );
   },
 };
 
+export class SectionCompletionProvider
+  implements vscode.CompletionItemProvider<vscode.CompletionItem> {
+  constructor(private ws: FoamWorkspace) {}
+
+  provideCompletionItems(
+    document: vscode.TextDocument,
+    position: vscode.Position
+  ): vscode.ProviderResult<vscode.CompletionList<vscode.CompletionItem>> {
+    const cursorPrefix = document
+      .lineAt(position)
+      .text.substr(0, position.character);
+
+    // Requires autocomplete only if cursorPrefix matches `[[` that NOT ended by `]]`.
+    // See https://github.com/foambubble/foam/pull/596#issuecomment-825748205 for details.
+    const match = cursorPrefix.match(SECTION_REGEX);
+
+    if (!match) {
+      return null;
+    }
+
+    const resourceId =
+      match[1] === '#' ? fromVsCodeUri(document.uri) : match[1].slice(0, -1);
+
+    const resource = this.ws.find(resourceId);
+    const replacementRange = new vscode.Range(
+      position.line,
+      cursorPrefix.lastIndexOf('#') + 1,
+      position.line,
+      position.character
+    );
+    if (resource) {
+      const items = resource.sections.map(b => {
+        const item = new ResourceCompletionItem(
+          b.label,
+          vscode.CompletionItemKind.Text,
+          resource.uri.withFragment(b.label)
+        );
+        item.sortText = String(b.range.start.line).padStart(5, '0');
+        item.range = replacementRange;
+        return item;
+      });
+      return new vscode.CompletionList(items);
+    }
+  }
+
+  resolveCompletionItem(
+    item: ResourceCompletionItem | vscode.CompletionItem
+  ): vscode.ProviderResult<vscode.CompletionItem> {
+    if (item instanceof ResourceCompletionItem) {
+      return this.ws.readAsMarkdown(item.resourceUri).then(text => {
+        item.documentation = getNoteTooltip(text);
+        return item;
+      });
+    }
+    return item;
+  }
+}
+
 export class CompletionProvider
   implements vscode.CompletionItemProvider<vscode.CompletionItem> {
   constructor(private ws: FoamWorkspace, private graph: FoamGraph) {}
@@ -38,22 +103,30 @@ export class CompletionProvider
 
     // Requires autocomplete only if cursorPrefix matches `[[` that NOT ended by `]]`.
     // See https://github.com/foambubble/foam/pull/596#issuecomment-825748205 for details.
-    // eslint-disable-next-line no-useless-escape
-    const requiresAutocomplete = cursorPrefix.match(/\[\[[^\[\]]*(?!.*\]\])/);
+    const requiresAutocomplete = cursorPrefix.match(WIKILINK_REGEX);
 
-    if (!requiresAutocomplete) {
+    if (!requiresAutocomplete || requiresAutocomplete[0].indexOf('#') >= 0) {
       return null;
     }
 
+    const text = requiresAutocomplete[0];
+    const replacementRange = new vscode.Range(
+      position.line,
+      position.character - (text.length - 2),
+      position.line,
+      position.character
+    );
     const resources = this.ws.list().map(resource => {
       const label = vscode.workspace.asRelativePath(toVsCodeUri(resource.uri));
       const item = new ResourceCompletionItem(
         label,
         vscode.CompletionItemKind.File,
-        resource
+        resource.uri
       );
-      item.filterText = URI.getBasename(resource.uri);
+      item.filterText = resource.uri.getName();
       item.insertText = this.ws.getIdentifier(resource.uri);
+      item.range = replacementRange;
+      item.commitCharacters = ['#'];
       return item;
     });
     const placeholders = Array.from(this.graph.placeholders.values()).map(
@@ -63,6 +136,7 @@ export class CompletionProvider
           vscode.CompletionItemKind.Interface
         );
         item.insertText = uri.path;
+        item.range = replacementRange;
         return item;
       }
     );
@@ -74,7 +148,10 @@ export class CompletionProvider
     item: ResourceCompletionItem | vscode.CompletionItem
   ): vscode.ProviderResult<vscode.CompletionItem> {
     if (item instanceof ResourceCompletionItem) {
-      item.documentation = getNoteTooltip(item.resource.source.text);
+      return this.ws.readAsMarkdown(item.resourceUri).then(text => {
+        item.documentation = getNoteTooltip(text);
+        return item;
+      });
     }
     return item;
   }
@@ -87,7 +164,7 @@ class ResourceCompletionItem extends vscode.CompletionItem {
   constructor(
     label: string,
     type: vscode.CompletionItemKind,
-    public resource: Resource
+    public resourceUri: URI
   ) {
     super(label, type);
   }

packages/foam-vscode/src/features/navigation-provider.spec.ts

@@ -10,7 +10,7 @@ import {
 import { NavigationProvider } from './navigation-provider';
 import { OPEN_COMMAND } from './utility-commands';
 import { toVsCodeUri } from '../utils/vsc-utils';
-import { createMarkdownParser } from '../core/markdown-provider';
+import { createMarkdownParser } from '../core/services/markdown-parser';
 import { FoamWorkspace } from '../core/model/workspace';
 import { FoamGraph } from '../core/model/graph';
 
@@ -69,7 +69,7 @@ describe('Document navigation', () => {
 
       expect(links.length).toEqual(1);
       expect(links[0].target).toEqual(OPEN_COMMAND.asURI(fileA.uri));
-      expect(links[0].range).toEqual(new vscode.Range(0, 18, 0, 28));
+      expect(links[0].range).toEqual(new vscode.Range(0, 20, 0, 26));
     });
 
     it('should create links for placeholders', async () => {
@@ -87,7 +87,7 @@ describe('Document navigation', () => {
       expect(links[0].target).toEqual(
         OPEN_COMMAND.asURI(URI.placeholder('a placeholder'))
       );
-      expect(links[0].range).toEqual(new vscode.Range(0, 18, 0, 35));
+      expect(links[0].range).toEqual(new vscode.Range(0, 20, 0, 33));
     });
   });
 
@@ -232,6 +232,6 @@ describe('Document navigation', () => {
         range: new vscode.Range(0, 23, 0, 23 + 9),
       });
     });
-    it('should provide references for placeholders', async () => {});
+    // it('should provide references for placeholders', async () => {});
   });
 });

packages/foam-vscode/src/features/navigation-provider.ts

@@ -1,11 +1,11 @@
 import * as vscode from 'vscode';
 import { FoamFeature } from '../types';
 import { mdDocSelector } from '../utils';
-import { toVsCodeRange, toVsCodeUri } from '../utils/vsc-utils';
+import { toVsCodeRange, toVsCodeUri, fromVsCodeUri } from '../utils/vsc-utils';
 import { OPEN_COMMAND } from './utility-commands';
 import { Foam } from '../core/model/foam';
 import { FoamWorkspace } from '../core/model/workspace';
-import { ResourceLink, ResourceParser } from '../core/model/note';
+import { Resource, ResourceLink, ResourceParser } from '../core/model/note';
 import { URI } from '../core/model/uri';
 import { Range } from '../core/model/range';
 import { FoamGraph } from '../core/model/graph';
@@ -70,7 +70,10 @@ export class NavigationProvider
     document: vscode.TextDocument,
     position: vscode.Position
   ): vscode.ProviderResult<vscode.Location[]> {
-    const resource = this.parser.parse(document.uri, document.getText());
+    const resource = this.parser.parse(
+      fromVsCodeUri(document.uri),
+      document.getText()
+    );
     const targetLink: ResourceLink | undefined = resource.links.find(link =>
       Range.containsPosition(link.range, position)
     );
@@ -95,7 +98,10 @@ export class NavigationProvider
     document: vscode.TextDocument,
     position: vscode.Position
   ): vscode.LocationLink[] {
-    const resource = this.parser.parse(document.uri, document.getText());
+    const resource = this.parser.parse(
+      fromVsCodeUri(document.uri),
+      document.getText()
+    );
     const targetLink: ResourceLink | undefined = resource.links.find(link =>
       Range.containsPosition(link.range, position)
     );
@@ -104,27 +110,28 @@ export class NavigationProvider
     }
 
     const uri = this.workspace.resolveLink(resource, targetLink);
-    if (URI.isPlaceholder(uri)) {
+    if (uri.isPlaceholder()) {
       return;
     }
 
     const targetResource = this.workspace.get(uri);
+    const section = Resource.findSection(targetResource, uri.fragment);
+
+    const targetRange = section
+      ? section.range
+      : Range.createFromPosition(
+          targetResource.source.contentStart,
+          targetResource.source.end
+        );
+    const targetSelectionRange = section
+      ? section.range
+      : Range.createFromPosition(targetRange.start);
 
     const result: vscode.LocationLink = {
       originSelectionRange: toVsCodeRange(targetLink.range),
-      targetUri: toVsCodeUri(uri),
-      targetRange: toVsCodeRange(
-        Range.createFromPosition(
-          targetResource.source.contentStart,
-          targetResource.source.end
-        )
-      ),
-      targetSelectionRange: toVsCodeRange(
-        Range.createFromPosition(
-          targetResource.source.contentStart,
-          targetResource.source.contentStart
-        )
-      ),
+      targetUri: toVsCodeUri(uri.asPlain()),
+      targetRange: toVsCodeRange(targetRange),
+      targetSelectionRange: toVsCodeRange(targetSelectionRange),
     };
     return [result];
   }
@@ -135,7 +142,10 @@ export class NavigationProvider
   public provideDocumentLinks(
     document: vscode.TextDocument
   ): vscode.DocumentLink[] {
-    const resource = this.parser.parse(document.uri, document.getText());
+    const resource = this.parser.parse(
+      fromVsCodeUri(document.uri),
+      document.getText()
+    );
 
     const targets: { link: ResourceLink; target: URI }[] = resource.links.map(
       link => ({
@@ -145,14 +155,19 @@ export class NavigationProvider
     );
 
     return targets.map(o => {
-      const command = OPEN_COMMAND.asURI(toVsCodeUri(o.target));
+      const command = OPEN_COMMAND.asURI(o.target);
       const documentLink = new vscode.DocumentLink(
-        toVsCodeRange(o.link.range),
+        new vscode.Range(
+          o.link.range.start.line,
+          o.link.range.start.character + 2,
+          o.link.range.end.line,
+          o.link.range.end.character - 2
+        ),
         command
       );
-      documentLink.tooltip = URI.isPlaceholder(o.target)
+      documentLink.tooltip = o.target.isPlaceholder()
         ? `Create note for '${o.target.path}'`
-        : `Go to ${URI.toFsPath(o.target)}`;
+        : `Go to ${o.target.toFsPath()}`;
       return documentLink;
     });
   }

packages/foam-vscode/src/features/open-random-note.ts

@@ -1,4 +1,3 @@
-import { URI } from '../core/model/uri';
 import { ExtensionContext, commands, window } from 'vscode';
 import { FoamFeature } from '../types';
 import { focusNote } from '../utils';
@@ -10,9 +9,7 @@ const feature: FoamFeature = {
       commands.registerCommand('foam-vscode.open-random-note', async () => {
         const foam = await foamPromise;
         const currentFile = window.activeTextEditor?.document.uri.path;
-        const notes = foam.workspace
-          .list()
-          .filter(r => URI.isMarkdownFile(r.uri));
+        const notes = foam.workspace.list().filter(r => r.uri.isMarkdown());
         if (notes.length <= 1) {
           window.showInformationMessage(
             'Could not find another note to open. If you believe this is a bug, please file an issue.'

packages/foam-vscode/src/features/orphans.ts

@@ -29,7 +29,7 @@ const feature: FoamFeature = {
       workspacesURIs,
       () => foam.graph.getAllNodes().filter(uri => isOrphan(uri, foam.graph)),
       uri => {
-        if (URI.isPlaceholder(uri)) {
+        if (uri.isPlaceholder()) {
           return new UriTreeItem(uri);
         }
         const resource = foam.workspace.find(uri);

packages/foam-vscode/src/features/placeholders.ts

@@ -30,7 +30,7 @@ const feature: FoamFeature = {
           .getAllNodes()
           .filter(uri => isPlaceholderResource(uri, foam.workspace)),
       uri => {
-        if (URI.isPlaceholder(uri)) {
+        if (uri.isPlaceholder()) {
           return new UriTreeItem(uri);
         }
         const resource = foam.workspace.find(uri);
@@ -54,7 +54,7 @@ const feature: FoamFeature = {
 export default feature;
 
 export function isPlaceholderResource(uri: URI, workspace: FoamWorkspace) {
-  if (URI.isPlaceholder(uri)) {
+  if (uri.isPlaceholder()) {
     return true;
   }
 

packages/foam-vscode/src/features/preview-navigation.spec.ts

@@ -1,7 +1,12 @@
 import MarkdownIt from 'markdown-it';
+import { createMarkdownParser } from '../core/services/markdown-parser';
 import { FoamWorkspace } from '../core/model/workspace';
 import { createTestNote } from '../test/test-utils';
-import { getUriInWorkspace } from '../test/test-utils-vscode';
+import {
+  createFile,
+  deleteFile,
+  getUriInWorkspace,
+} from '../test/test-utils-vscode';
 import {
   markdownItWithFoamLinks,
   markdownItWithFoamTags,
@@ -39,12 +44,7 @@ describe('Link generation in preview', () => {
 });
 
 describe('Stylable tag generation in preview', () => {
-  const noteB = createTestNote({
-    uri: 'note-b.md',
-    title: 'Note B',
-  });
-  const ws = new FoamWorkspace().set(noteB);
-  const md = markdownItWithFoamTags(MarkdownIt(), ws);
+  const md = markdownItWithFoamTags(MarkdownIt(), new FoamWorkspace());
 
   it('transforms a string containing multiple tags to a stylable html element', () => {
     expect(md.render(`Lorem #ipsum dolor #sit`)).toMatch(
@@ -60,25 +60,14 @@ describe('Stylable tag generation in preview', () => {
 });
 
 describe('Displaying included notes in preview', () => {
-  const noteA = createTestNote({
-    uri: 'note-a.md',
-    text: 'This is the text of note A',
-  });
-  const noteC = createTestNote({
-    uri: 'note-c.md',
-    text: 'This is the text of note C which includes ![[note-d]]',
-  });
-  const noteD = createTestNote({
-    uri: 'note-d.md',
-    text: 'This is the text of note D which includes ![[note-c]]',
-  });
-  const ws = new FoamWorkspace()
-    .set(noteA)
-    .set(noteC)
-    .set(noteD);
-  const md = markdownItWithNoteInclusion(MarkdownIt(), ws);
+  it('should render an included note', () => {
+    const note = createTestNote({
+      uri: 'note-a.md',
+      text: 'This is the text of note A',
+    });
+    const ws = new FoamWorkspace().set(note);
+    const md = markdownItWithNoteInclusion(MarkdownIt(), ws);
 
-  it('renders an included note', () => {
     expect(
       md.render(`This is the root node. 
 
@@ -90,20 +79,62 @@ describe('Displaying included notes in preview', () => {
     );
   });
 
-  it('displays the syntax when a note is not found', () => {
+  it('should render an included section', async () => {
+    // here we use createFile as the test note doesn't fill in
+    // all the metadata we need
+    const note = await createFile(
+      `
+# Section 1
+This is the first section of note D
+
+# Section 2 
+This is the second section of note D
+
+# Section 3
+This is the third section of note D
+    `,
+      ['note-e.md']
+    );
+    const parser = createMarkdownParser([]);
+    const ws = new FoamWorkspace().set(parser.parse(note.uri, note.content));
+    const md = markdownItWithNoteInclusion(MarkdownIt(), ws);
+
     expect(
-      md.render(`This is the root node.
-    ![[note-b]]`)
+      md.render(`This is the root node. 
+
+ ![[note-e#Section 2]]`)
     ).toMatch(
-      `<p>This is the root node.
-![[note-b]]</p>
-`
+      `<p>This is the root node.</p>
+<p><h1>Section 2</h1>
+<p>This is the second section of note D</p>
+</p>`
+    );
+
+    await deleteFile(note);
+  });
+
+  it('should fallback to the bare text when the note is not found', () => {
+    const md = markdownItWithNoteInclusion(MarkdownIt(), new FoamWorkspace());
+
+    expect(md.render(`This is the root node. ![[non-existing-note]]`)).toMatch(
+      `<p>This is the root node. ![[non-existing-note]]</p>`
     );
   });
 
-  it('displays a warning in case of cyclical inclusions', () => {
-    expect(md.render(noteD.source.text)).toMatch(
-      `<p>This is the text of note D which includes <p>This is the text of note C which includes <p>This is the text of note D which includes <div class="foam-cyclic-link-warning">Cyclic link detected for wikilink: note-c</div></p>
+  it('should display a warning in case of cyclical inclusions', () => {
+    const noteA = createTestNote({
+      uri: 'note-a.md',
+      text: 'This is the text of note A which includes ![[note-b]]',
+    });
+    const noteB = createTestNote({
+      uri: 'note-b.md',
+      text: 'This is the text of note B which includes ![[note-a]]',
+    });
+    const ws = new FoamWorkspace().set(noteA).set(noteB);
+    const md = markdownItWithNoteInclusion(MarkdownIt(), ws);
+
+    expect(md.render(noteB.source.text)).toMatch(
+      `<p>This is the text of note B which includes <p>This is the text of note A which includes <p>This is the text of note B which includes <div class="foam-cyclic-link-warning">Cyclic link detected for wikilink: note-a</div></p>
 </p>
 </p>
 `

packages/foam-vscode/src/features/preview-navigation.ts

@@ -1,11 +1,12 @@
 import markdownItRegex from 'markdown-it-regex';
 import * as vscode from 'vscode';
 import { FoamFeature } from '../types';
-import { isNone } from '../utils';
+import { isNone, isSome } from '../utils';
 import { Foam } from '../core/model/foam';
 import { FoamWorkspace } from '../core/model/workspace';
 import { Logger } from '../core/utils/log';
 import { toVsCodeUri } from '../utils/vsc-utils';
+import { Resource } from '../core/model/note';
 
 const ALIAS_DIVIDER_CHAR = '|';
 const refsStack: string[] = [];
@@ -45,21 +46,32 @@ export const markdownItWithNoteInclusion = (
           return `![[${wikilink}]]`;
         }
 
-        const cyclicLinkDetected = refsStack.includes(wikilink);
+        const cyclicLinkDetected = refsStack.includes(
+          includedNote.uri.path.toLocaleLowerCase()
+        );
 
         if (!cyclicLinkDetected) {
-          refsStack.push(wikilink.toLowerCase());
+          refsStack.push(includedNote.uri.path.toLocaleLowerCase());
         }
 
-        const html = cyclicLinkDetected
-          ? `<div class="foam-cyclic-link-warning">Cyclic link detected for wikilink: ${wikilink}</div>`
-          : md.render(includedNote.source.text);
-
-        if (!cyclicLinkDetected) {
+        if (cyclicLinkDetected) {
+          return `<div class="foam-cyclic-link-warning">Cyclic link detected for wikilink: ${wikilink}</div>`;
+        } else {
+          let content = includedNote.source.text;
+          const section = Resource.findSection(
+            includedNote,
+            includedNote.uri.fragment
+          );
+          if (isSome(section)) {
+            const rows = content.split('\n');
+            content = rows
+              .slice(section.range.start.line, section.range.end.line)
+              .join('\n');
+          }
+          const html = md.render(content);
           refsStack.pop();
+          return html;
         }
-
-        return html;
       } catch (e) {
         Logger.error(
           `Error while including [[${wikilink}]] into the current document of the Preview panel`,

packages/foam-vscode/src/features/tag-completion.spec.ts

@@ -79,4 +79,18 @@ describe('Tag Completion', () => {
     expect(foamTags.tags.get('primary')).toBeTruthy();
     expect(tags.items.length).toEqual(3);
   });
+
+  it('should not provide suggestions when inside a wikilink', async () => {
+    const { uri } = await createFile('[[#prim');
+    const { doc } = await showInEditor(uri);
+    const provider = new TagCompletionProvider(foamTags);
+
+    const tags = await provider.provideCompletionItems(
+      doc,
+      new vscode.Position(0, 7)
+    );
+
+    expect(foamTags.tags.get('primary')).toBeTruthy();
+    expect(tags).toBeNull();
+  });
 });

packages/foam-vscode/src/features/tag-completion.ts

@@ -3,6 +3,9 @@ import { Foam } from '../core/model/foam';
 import { FoamTags } from '../core/model/tags';
 import { FoamFeature } from '../types';
 import { mdDocSelector } from '../utils';
+import { SECTION_REGEX } from './link-completion';
+
+export const TAG_REGEX = /#(.*)/;
 
 const feature: FoamFeature = {
   activate: async (
@@ -32,7 +35,8 @@ export class TagCompletionProvider
       .lineAt(position)
       .text.substr(0, position.character);
 
-    const requiresAutocomplete = cursorPrefix.match(/#(.*)/);
+    const requiresAutocomplete =
+      cursorPrefix.match(TAG_REGEX) && !cursorPrefix.match(SECTION_REGEX);
 
     if (!requiresAutocomplete) {
       return null;

packages/foam-vscode/src/features/tags-tree-view.spec.ts

@@ -2,7 +2,7 @@ import { createTestNote } from '../test/test-utils';
 import { cleanWorkspace, closeEditors } from '../test/test-utils-vscode';
 import { TagItem, TagReference, TagsProvider } from './tags-tree-view';
 import { bootstrap, Foam } from '../core/model/foam';
-import { MarkdownResourceProvider } from '../core/markdown-provider';
+import { MarkdownResourceProvider } from '../core/services/markdown-provider';
 import { FileDataStore, Matcher } from '../core/services/datastore';
 
 describe('Tags tree panel', () => {
@@ -62,6 +62,7 @@ describe('Tags tree panel', () => {
 
     childTreeItems.forEach(child => {
       if (child instanceof TagItem) {
+        // eslint-disable-next-line jest/no-conditional-expect
         expect(child.title).toEqual('child');
       }
     });
@@ -94,7 +95,9 @@ describe('Tags tree panel', () => {
 
     childTreeItems.forEach(child => {
       if (child instanceof TagItem) {
+        // eslint-disable-next-line jest/no-conditional-expect
         expect(['child', 'subchild']).toContain(child.title);
+        // eslint-disable-next-line jest/no-conditional-expect
         expect(child.title).not.toEqual('parent');
       }
     });

packages/foam-vscode/src/features/utility-commands.ts

@@ -1,54 +1,61 @@
 import * as vscode from 'vscode';
 import { FoamFeature } from '../types';
 import { URI } from '../core/model/uri';
-import { fromVsCodeUri, toVsCodeUri } from '../utils/vsc-utils';
+import { fromVsCodeUri, toVsCodeRange, toVsCodeUri } from '../utils/vsc-utils';
 import { NoteFactory } from '../services/templates';
+import { Foam } from '../core/model/foam';
+import { Resource } from '../core/model/note';
 
 export const OPEN_COMMAND = {
   command: 'foam-vscode.open-resource',
   title: 'Foam: Open Resource',
 
-  execute: async (params: { uri: URI }) => {
-    const { uri } = params;
-    switch (uri.scheme) {
-      case 'file':
-        return vscode.commands.executeCommand('vscode.open', toVsCodeUri(uri));
-
-      case 'placeholder':
-        const title = uri.path.split('/').slice(-1)[0];
-
-        const basedir =
-          vscode.workspace.workspaceFolders.length > 0
-            ? fromVsCodeUri(vscode.workspace.workspaceFolders[0].uri)
-            : fromVsCodeUri(vscode.window.activeTextEditor?.document.uri)
-            ? URI.getDir(
-                fromVsCodeUri(vscode.window.activeTextEditor!.document.uri)
-              )
-            : undefined;
-
-        if (basedir === undefined) {
-          return;
-        }
-
-        const target = URI.createResourceUriFromPlaceholder(basedir, uri);
-
-        await NoteFactory.createForPlaceholderWikilink(title, target);
-        return;
-    }
-  },
-
   asURI: (uri: URI) =>
     vscode.Uri.parse(`command:${OPEN_COMMAND.command}`).with({
-      query: encodeURIComponent(JSON.stringify({ uri: URI.create(uri) })),
+      query: encodeURIComponent(JSON.stringify({ uri })),
     }),
 };
 
 const feature: FoamFeature = {
-  activate: (context: vscode.ExtensionContext) => {
+  activate: (context: vscode.ExtensionContext, foamPromise: Promise<Foam>) => {
     context.subscriptions.push(
       vscode.commands.registerCommand(
         OPEN_COMMAND.command,
-        OPEN_COMMAND.execute
+        async (params: { uri: URI }) => {
+          const uri = new URI(params.uri);
+          switch (uri.scheme) {
+            case 'file': {
+              const targetUri =
+                uri.path === vscode.window.activeTextEditor?.document.uri.path
+                  ? vscode.window.activeTextEditor?.document.uri
+                  : toVsCodeUri(uri.asPlain());
+              const targetEditor = vscode.window.visibleTextEditors.find(
+                ed => targetUri.path === ed.document.uri.path
+              );
+              const column = targetEditor?.viewColumn;
+              return vscode.window.showTextDocument(targetEditor.document, {
+                viewColumn: column,
+              });
+            }
+            case 'placeholder': {
+              const basedir =
+                vscode.workspace.workspaceFolders.length > 0
+                  ? vscode.workspace.workspaceFolders[0].uri
+                  : vscode.window.activeTextEditor?.document.uri
+                  ? vscode.window.activeTextEditor!.document.uri
+                  : undefined;
+              if (basedir === undefined) {
+                return;
+              }
+              const title = uri.getName();
+              const target = fromVsCodeUri(basedir)
+                .resolve(uri, true)
+                .changeExtension('', '.md');
+              await NoteFactory.createForPlaceholderWikilink(title, target);
+              return;
+            }
+          }
+        }
       )
     );
   },

packages/foam-vscode/src/features/wikilink-diagnostics.spec.ts

@@ -1,5 +1,5 @@
 import * as vscode from 'vscode';
-import { createMarkdownParser } from '../core/markdown-provider';
+import { createMarkdownParser } from '../core/services/markdown-parser';
 import { FoamWorkspace } from '../core/model/workspace';
 import {
   cleanWorkspace,
@@ -7,6 +7,7 @@ import {
   createFile,
   showInEditor,
 } from '../test/test-utils-vscode';
+import { toVsCodeUri } from '../utils/vsc-utils';
 import { updateDiagnostics } from './wikilink-diagnostics';
 
 describe('Wikilink diagnostics', () => {
@@ -15,12 +16,8 @@ describe('Wikilink diagnostics', () => {
     await closeEditors();
   });
   it('should show no warnings when there are no conflicts', async () => {
-    const fileA = await createFile('This is the todo file', [
-      'project',
-      'car',
-      'todo.md',
-    ]);
-    const fileB = await createFile('This is linked to [[todo]]');
+    const fileA = await createFile('This is the todo file');
+    const fileB = await createFile(`This is linked to [[${fileA.name}]]`);
 
     const parser = createMarkdownParser([]);
     const ws = new FoamWorkspace()
@@ -106,14 +103,95 @@ describe('Wikilink diagnostics', () => {
     expect(items[0].severity).toEqual(vscode.DiagnosticSeverity.Warning);
     expect(
       items[0].relatedInformation.map(info => info.location.uri.path)
-    ).toEqual([fileA.uri.path, fileB.uri.path]);
+    ).toEqual([fileB.uri.path, fileA.uri.path]);
+  });
+});
+
+describe('Section diagnostics', () => {
+  it('should show nothing on placeholders', async () => {
+    const file = await createFile('Link to [[placeholder]]');
+    const parser = createMarkdownParser([]);
+    const ws = new FoamWorkspace().set(parser.parse(file.uri, file.content));
+
+    await showInEditor(file.uri);
+
+    const collection = vscode.languages.createDiagnosticCollection('foam-test');
+    updateDiagnostics(
+      ws,
+      parser,
+      vscode.window.activeTextEditor.document,
+      collection
+    );
+    expect(countEntries(collection)).toEqual(0);
+  });
+  it('should show nothing when the section is correct', async () => {
+    const fileA = await createFile(
+      `
+# Section 1
+Content of section 1
+
+# Section 2
+Content of section 2
+`,
+      ['my-file.md']
+    );
+    const fileB = await createFile('Link to [[my-file#Section 1]]');
+    const parser = createMarkdownParser([]);
+    const ws = new FoamWorkspace()
+      .set(parser.parse(fileA.uri, fileA.content))
+      .set(parser.parse(fileB.uri, fileB.content));
+
+    await showInEditor(fileB.uri);
+
+    const collection = vscode.languages.createDiagnosticCollection('foam-test');
+    updateDiagnostics(
+      ws,
+      parser,
+      vscode.window.activeTextEditor.document,
+      collection
+    );
+    expect(countEntries(collection)).toEqual(0);
+  });
+  it('should show a warning when the section name is incorrect', async () => {
+    const fileA = await createFile(
+      `
+# Section 1
+Content of section 1
+
+# Section 2
+Content of section 2
+`
+    );
+    const fileB = await createFile(`Link to [[${fileA.name}#Section 10]]`);
+    const parser = createMarkdownParser([]);
+    const ws = new FoamWorkspace()
+      .set(parser.parse(fileA.uri, fileA.content))
+      .set(parser.parse(fileB.uri, fileB.content));
+
+    await showInEditor(fileB.uri);
+
+    const collection = vscode.languages.createDiagnosticCollection('foam-test');
+    updateDiagnostics(
+      ws,
+      parser,
+      vscode.window.activeTextEditor.document,
+      collection
+    );
+    expect(countEntries(collection)).toEqual(1);
+    const items = collection.get(toVsCodeUri(fileB.uri));
+    expect(items[0].range).toEqual(new vscode.Range(0, 15, 0, 28));
+    expect(items[0].severity).toEqual(vscode.DiagnosticSeverity.Warning);
+    expect(items[0].relatedInformation.map(info => info.message)).toEqual([
+      'Section 1',
+      'Section 2',
+    ]);
   });
 });
 
 const countEntries = (collection: vscode.DiagnosticCollection): number => {
   let count = 0;
-  collection.forEach(i => {
-    count++;
+  collection.forEach((i, diagnostics) => {
+    count += diagnostics.length;
   });
   return count;
 };

packages/foam-vscode/src/features/wikilink-diagnostics.ts

@@ -1,13 +1,20 @@
 import { debounce } from 'lodash';
 import * as vscode from 'vscode';
 import { Foam } from '../core/model/foam';
-import { ResourceParser } from '../core/model/note';
+import { Resource, ResourceParser } from '../core/model/note';
+import { Range } from '../core/model/range';
 import { FoamWorkspace } from '../core/model/workspace';
-import { getShortestIdentifier } from '../core/utils';
 import { FoamFeature } from '../types';
-import { fromVsCodeUri, toVsCodeRange, toVsCodeUri } from '../utils/vsc-utils';
+import { isNone } from '../utils';
+import {
+  fromVsCodeUri,
+  toVsCodePosition,
+  toVsCodeRange,
+  toVsCodeUri,
+} from '../utils/vsc-utils';
 
 const AMBIGUOUS_IDENTIFIER_CODE = 'ambiguous-identifier';
+const UNKNOWN_SECTION_CODE = 'unknown-section';
 
 interface FoamCommand<T> {
   name: string;
@@ -24,7 +31,7 @@ const FIND_IDENTIFER_COMMAND: FoamCommand<FindIdentifierCommandArgs> = {
   name: 'foam:compute-identifier',
   execute: async ({ target, amongst, range }) => {
     if (vscode.window.activeTextEditor) {
-      let identifier = getShortestIdentifier(
+      let identifier = FoamWorkspace.getShortestIdentifier(
         target.path,
         amongst.map(uri => uri.path)
       );
@@ -33,13 +40,27 @@ const FIND_IDENTIFER_COMMAND: FoamCommand<FindIdentifierCommandArgs> = {
         ? identifier.slice(0, -3)
         : identifier;
 
-      vscode.window.activeTextEditor.edit(builder => {
+      await vscode.window.activeTextEditor.edit(builder => {
         builder.replace(range, identifier);
       });
     }
   },
 };
 
+interface ReplaceTextCommandArgs {
+  range: vscode.Range;
+  value: string;
+}
+
+const REPLACE_TEXT_COMMAND: FoamCommand<ReplaceTextCommandArgs> = {
+  name: 'foam:replace-text',
+  execute: async ({ range, value }) => {
+    await vscode.window.activeTextEditor.edit(builder => {
+      builder.replace(range, value);
+    });
+  },
+};
+
 const feature: FoamFeature = {
   activate: async (
     context: vscode.ExtensionContext,
@@ -85,6 +106,10 @@ const feature: FoamFeature = {
       vscode.commands.registerCommand(
         FIND_IDENTIFER_COMMAND.name,
         FIND_IDENTIFER_COMMAND.execute
+      ),
+      vscode.commands.registerCommand(
+        REPLACE_TEXT_COMMAND.name,
+        REPLACE_TEXT_COMMAND.execute
       )
     );
   },
@@ -97,6 +122,7 @@ export function updateDiagnostics(
   collection: vscode.DiagnosticCollection
 ): void {
   collection.clear();
+  const result = [];
   if (document && document.languageId === 'markdown') {
     const resource = parser.parse(
       fromVsCodeUri(document.uri),
@@ -105,32 +131,62 @@ export function updateDiagnostics(
 
     for (const link of resource.links) {
       if (link.type === 'wikilink') {
-        const targets = workspace.listById(link.target);
+        const [target, section] = link.target.split('#');
+        const targets = workspace.listByIdentifier(target);
         if (targets.length > 1) {
-          collection.set(document.uri, [
-            {
-              code: AMBIGUOUS_IDENTIFIER_CODE,
-              message: 'Resource identifier is ambiguous',
-              range: toVsCodeRange(link.range),
+          result.push({
+            code: AMBIGUOUS_IDENTIFIER_CODE,
+            message: 'Resource identifier is ambiguous',
+            range: toVsCodeRange(link.range),
+            severity: vscode.DiagnosticSeverity.Warning,
+            source: 'Foam',
+            relatedInformation: targets.map(
+              t =>
+                new vscode.DiagnosticRelatedInformation(
+                  new vscode.Location(
+                    toVsCodeUri(t.uri),
+                    new vscode.Position(0, 0)
+                  ),
+                  `Possible target: ${vscode.workspace.asRelativePath(
+                    toVsCodeUri(t.uri)
+                  )}`
+                )
+            ),
+          });
+        }
+        if (section && targets.length === 1) {
+          const resource = targets[0];
+          if (isNone(Resource.findSection(resource, section))) {
+            const range = Range.create(
+              link.range.start.line,
+              link.range.start.character + target.length + 2,
+              link.range.end.line,
+              link.range.end.character
+            );
+            result.push({
+              code: UNKNOWN_SECTION_CODE,
+              message: `Cannot find section "${section}" in document, available sections are:`,
+              range: toVsCodeRange(range),
               severity: vscode.DiagnosticSeverity.Warning,
               source: 'Foam',
-              relatedInformation: targets.map(
-                t =>
+              relatedInformation: resource.sections.map(
+                b =>
                   new vscode.DiagnosticRelatedInformation(
                     new vscode.Location(
-                      toVsCodeUri(t.uri),
-                      new vscode.Position(0, 0)
+                      toVsCodeUri(resource.uri),
+                      toVsCodePosition(b.range.start)
                     ),
-                    `Possible target: ${vscode.workspace.asRelativePath(
-                      toVsCodeUri(t.uri)
-                    )}`
+                    b.label
                   )
               ),
-            },
-          ]);
+            });
+          }
         }
       }
     }
+    if (result.length > 0) {
+      collection.set(document.uri, result);
+    }
   }
 }
 
@@ -145,50 +201,88 @@ export class IdentifierResolver implements vscode.CodeActionProvider {
     context: vscode.CodeActionContext,
     token: vscode.CancellationToken
   ): vscode.CodeAction[] {
-    return context.diagnostics
-      .filter(diagnostic => diagnostic.code === AMBIGUOUS_IDENTIFIER_CODE)
-      .reduce((acc, diagnostic) => {
+    return context.diagnostics.reduce((acc, diagnostic) => {
+      if (diagnostic.code === AMBIGUOUS_IDENTIFIER_CODE) {
         const res: vscode.CodeAction[] = [];
         const uris = diagnostic.relatedInformation.map(
           info => info.location.uri
         );
         for (const item of diagnostic.relatedInformation) {
           res.push(
-            this.createCommandCodeAction(diagnostic, item.location.uri, uris)
+            createFindIdentifierCommand(diagnostic, item.location.uri, uris)
           );
         }
         return [...acc, ...res];
-      }, [] as vscode.CodeAction[]);
-  }
-
-  private createCommandCodeAction(
-    diagnostic: vscode.Diagnostic,
-    target: vscode.Uri,
-    possibleTargets: vscode.Uri[]
-  ): vscode.CodeAction {
-    const action = new vscode.CodeAction(
-      `Use ${vscode.workspace.asRelativePath(target)}`,
-      vscode.CodeActionKind.QuickFix
-    );
-    action.command = {
-      command: FIND_IDENTIFER_COMMAND.name,
-      title: 'Link to this resource',
-      arguments: [
-        {
-          target: target,
-          amongst: possibleTargets,
-          range: new vscode.Range(
-            diagnostic.range.start.line,
-            diagnostic.range.start.character + 2,
-            diagnostic.range.end.line,
-            diagnostic.range.end.character - 2
-          ),
-        },
-      ],
-    };
-    action.diagnostics = [diagnostic];
-    return action;
+      }
+      if (diagnostic.code === UNKNOWN_SECTION_CODE) {
+        const res: vscode.CodeAction[] = [];
+        const sections = diagnostic.relatedInformation.map(
+          info => info.message
+        );
+        for (const section of sections) {
+          res.push(createReplaceSectionCommand(diagnostic, section));
+        }
+        return [...acc, ...res];
+      }
+      return acc;
+    }, [] as vscode.CodeAction[]);
   }
 }
 
+const createReplaceSectionCommand = (
+  diagnostic: vscode.Diagnostic,
+  section: string
+): vscode.CodeAction => {
+  const action = new vscode.CodeAction(
+    `Use ${section}`,
+    vscode.CodeActionKind.QuickFix
+  );
+  action.command = {
+    command: REPLACE_TEXT_COMMAND.name,
+    title: `Use section ${section}`,
+    arguments: [
+      {
+        value: section,
+        range: new vscode.Range(
+          diagnostic.range.start.line,
+          diagnostic.range.start.character + 1,
+          diagnostic.range.end.line,
+          diagnostic.range.end.character - 2
+        ),
+      },
+    ],
+  };
+  action.diagnostics = [diagnostic];
+  return action;
+};
+
+const createFindIdentifierCommand = (
+  diagnostic: vscode.Diagnostic,
+  target: vscode.Uri,
+  possibleTargets: vscode.Uri[]
+): vscode.CodeAction => {
+  const action = new vscode.CodeAction(
+    `Use ${vscode.workspace.asRelativePath(target)}`,
+    vscode.CodeActionKind.QuickFix
+  );
+  action.command = {
+    command: FIND_IDENTIFER_COMMAND.name,
+    title: 'Link to this resource',
+    arguments: [
+      {
+        target: target,
+        amongst: possibleTargets,
+        range: new vscode.Range(
+          diagnostic.range.start.line,
+          diagnostic.range.start.character + 2,
+          diagnostic.range.end.line,
+          diagnostic.range.end.character - 2
+        ),
+      },
+    ],
+  };
+  action.diagnostics = [diagnostic];
+  return action;
+};
+
 export default feature;

packages/foam-vscode/src/features/wikilink-reference-generation.ts

@@ -30,7 +30,7 @@ import { FoamWorkspace } from '../core/model/workspace';
 import {
   createMarkdownReferences,
   stringifyMarkdownLinkReferenceDefinition,
-} from '../core/markdown-provider';
+} from '../core/services/markdown-provider';
 import {
   LINK_REFERENCE_DEFINITION_FOOTER,
   LINK_REFERENCE_DEFINITION_HEADER,
@@ -61,7 +61,7 @@ const feature: FoamFeature = {
     // when a file is created as a result of peekDefinition
     // action on a wikilink, add definition update references
     foam.workspace.onDidAdd(_ => {
-      let editor = window.activeTextEditor;
+      const editor = window.activeTextEditor;
       if (!editor || !isMdEditor(editor)) {
         return;
       }
@@ -79,13 +79,13 @@ function updateDocumentInNoteGraph(foam: Foam, document: TextDocument) {
 }
 
 async function createReferenceList(foam: FoamWorkspace) {
-  let editor = window.activeTextEditor;
+  const editor = window.activeTextEditor;
 
   if (!editor || !isMdEditor(editor)) {
     return;
   }
 
-  let refs = await generateReferenceList(foam, editor.document);
+  const refs = await generateReferenceList(foam, editor.document);
   if (refs && refs.length) {
     await editor.edit(function(editBuilder) {
       if (editor) {
@@ -213,7 +213,7 @@ class WikilinkReferenceCodeLensProvider implements CodeLensProvider {
   ): CodeLens[] | Thenable<CodeLens[]> {
     loadDocConfig();
 
-    let range = detectReferenceListRange(document);
+    const range = detectReferenceListRange(document);
     if (!range) {
       return [];
     }
@@ -222,7 +222,7 @@ class WikilinkReferenceCodeLensProvider implements CodeLensProvider {
     const oldRefs = getText(range).replace(/\r?\n|\r/g, docConfig.eol);
     const newRefs = refs.join(docConfig.eol);
 
-    let status = oldRefs === newRefs ? 'up to date' : 'out of date';
+    const status = oldRefs === newRefs ? 'up to date' : 'out of date';
 
     return [
       new CodeLens(range, {

packages/foam-vscode/src/services/editor.spec.ts

@@ -1,5 +1,4 @@
 import { Selection, workspace } from 'vscode';
-import { URI } from '../core/model/uri';
 import { fromVsCodeUri } from '../utils/vsc-utils';
 import {
   closeEditors,
@@ -17,7 +16,7 @@ describe('Editor utils', () => {
       const file = await createFile('this is the file content.');
       await showInEditor(file.uri);
 
-      expect(getCurrentEditorDirectory()).toEqual(URI.getDir(file.uri));
+      expect(getCurrentEditorDirectory()).toEqual(file.uri.getDirectory());
     });
 
     it('should return the directory of the workspace folder if no editor is open', async () => {

packages/foam-vscode/src/services/editor.ts

@@ -71,11 +71,11 @@ export async function replaceSelection(
  * @returns URI
  * @throws Error if no file is open in editor AND no workspace folder defined
  */
-export function getCurrentEditorDirectory() {
+export function getCurrentEditorDirectory(): URI {
   const uri = window.activeTextEditor?.document?.uri;
 
   if (isSome(uri)) {
-    return URI.getDir(fromVsCodeUri(uri));
+    return fromVsCodeUri(uri).getDirectory();
   }
 
   if (workspace.workspaceFolders.length > 0) {

packages/foam-vscode/src/services/templates.spec.ts

@@ -1,7 +1,5 @@
 import { Selection, ViewColumn, window, workspace } from 'vscode';
-import path from 'path';
-import { isWindows } from '../utils';
-import { URI } from '../core/model/uri';
+import { isWindows } from '../core/common/platform';
 import { fromVsCodeUri } from '../utils/vsc-utils';
 import { determineNewNoteFilepath, NoteFactory } from '../services/templates';
 import {
@@ -43,7 +41,8 @@ describe('Create note from template', () => {
         })
       );
 
-      await deleteFile(fileA.uri);
+      await deleteFile(fileA);
+      await deleteFile(templateA);
     });
 
     it('should not ask a user for path if defined in template', async () => {
@@ -51,7 +50,7 @@ describe('Create note from template', () => {
       const templateA = await createFile(
         `---
 foam_template: # foam template metadata
-  filepath: "${URI.toFsPath(uri)}"
+  filepath: "${uri.toFsPath()}"
 ---
 `,
         ['.foam', 'templates', 'template-with-path.md']
@@ -65,6 +64,9 @@ foam_template: # foam template metadata
         new Resolver(new Map(), new Date())
       );
       expect(spy).toHaveBeenCalledTimes(0);
+
+      await deleteFile(uri);
+      await deleteFile(templateA);
     });
 
     it('should focus the editor on the newly created note', async () => {
@@ -84,6 +86,7 @@ foam_template: # foam template metadata
       );
 
       await deleteFile(target);
+      await deleteFile(templateA);
     });
   });
 
@@ -104,8 +107,9 @@ foam_template: # foam template metadata
     expect(window.activeTextEditor.document.getText()).toEqual(
       `${new Date().getFullYear()}`
     );
+
     await deleteFile(target);
-    await deleteFile(template.uri);
+    await deleteFile(template);
   });
 
   describe('Creation with active text selection', () => {
@@ -121,9 +125,13 @@ foam_template: # foam template metadata
       const target = getUriInWorkspace();
       const resolver = new Resolver(new Map(), new Date());
       await NoteFactory.createFromTemplate(templateA.uri, resolver, target);
-      expect(await resolver.resolve('FOAM_SELECTED_TEXT')).toEqual(
+      expect(await resolver.resolveFromName('FOAM_SELECTED_TEXT')).toEqual(
         'first file'
       );
+
+      await deleteFile(templateA);
+      await deleteFile(target);
+      await deleteFile(file);
     });
 
     it('should open created note in a new column if there was a selection', async () => {
@@ -148,7 +156,9 @@ foam_template: # foam template metadata
       expect(fromVsCodeUri(window.visibleTextEditors[1].document.uri)).toEqual(
         target
       );
+
       await deleteFile(target);
+      await deleteFile(templateA);
       await closeEditors();
     });
 
@@ -171,7 +181,7 @@ foam_template: # foam template metadata
         'Hello World World'
       );
       expect(window.visibleTextEditors[0].document.getText()).toEqual(
-        `This is my first file: [[${URI.getBasename(target)}]]`
+        `This is my first file: [[${target.getName()}]]`
       );
     });
   });
@@ -190,13 +200,13 @@ describe('determineNewNoteFilepath', () => {
       undefined,
       new Resolver(new Map(), new Date())
     );
-    expect(URI.toFsPath(winResult)).toMatch(winAbsolutePath);
+    expect(winResult.toFsPath()).toMatch(winAbsolutePath);
     const linuxResult = await determineNewNoteFilepath(
       linuxAbsolutePath,
       undefined,
       new Resolver(new Map(), new Date())
     );
-    expect(URI.toFsPath(linuxResult)).toMatch(linuxAbsolutePath);
+    expect(linuxResult.toFsPath()).toMatch(linuxAbsolutePath);
   });
 
   it('should compute the relative template filepath from the current directory', async () => {
@@ -208,11 +218,10 @@ describe('determineNewNoteFilepath', () => {
       undefined,
       new Resolver(new Map(), new Date())
     );
-    const expectedPath = path.join(
-      URI.toFsPath(fromVsCodeUri(workspace.workspaceFolders[0].uri)),
-      relativePath
-    );
-    expect(URI.toFsPath(resultFilepath)).toMatch(expectedPath);
+    const expectedPath = fromVsCodeUri(
+      workspace.workspaceFolders[0].uri
+    ).joinPath(relativePath);
+    expect(resultFilepath.toFsPath()).toMatch(expectedPath.toFsPath());
   });
 
   it('should use the note title if nothing else is available', async () => {
@@ -222,11 +231,10 @@ describe('determineNewNoteFilepath', () => {
       undefined,
       new Resolver(new Map().set('FOAM_TITLE', noteTitle), new Date())
     );
-    const expectedPath = path.join(
-      URI.toFsPath(fromVsCodeUri(workspace.workspaceFolders[0].uri)),
-      `${noteTitle}.md`
-    );
-    expect(URI.toFsPath(resultFilepath)).toMatch(expectedPath);
+    const expectedPath = fromVsCodeUri(
+      workspace.workspaceFolders[0].uri
+    ).joinPath(`${noteTitle}.md`);
+    expect(resultFilepath.toFsPath()).toMatch(expectedPath.toFsPath());
   });
 
   it('should ask the user for a note title if nothing else is available', async () => {
@@ -239,11 +247,10 @@ describe('determineNewNoteFilepath', () => {
       undefined,
       new Resolver(new Map(), new Date())
     );
-    const expectedPath = path.join(
-      URI.toFsPath(fromVsCodeUri(workspace.workspaceFolders[0].uri)),
-      `${noteTitle}.md`
-    );
+    const expectedPath = fromVsCodeUri(
+      workspace.workspaceFolders[0].uri
+    ).joinPath(`${noteTitle}.md`);
     expect(spy).toHaveBeenCalled();
-    expect(URI.toFsPath(resultFilepath)).toMatch(expectedPath);
+    expect(resultFilepath.toFsPath()).toMatch(expectedPath.toFsPath());
   });
 });

packages/foam-vscode/src/services/templates.ts

@@ -1,7 +1,5 @@
 import { URI } from '../core/model/uri';
 import { existsSync } from 'fs';
-import * as path from 'path';
-import { isAbsolute } from 'path';
 import { TextEncoder } from 'util';
 import { SnippetString, ViewColumn, window, workspace } from 'vscode';
 import { focusNote } from '../utils';
@@ -19,24 +17,19 @@ import { Resolver } from './variable-resolver';
 /**
  * The templates directory
  */
-export const TEMPLATES_DIR = URI.joinPath(
-  fromVsCodeUri(workspace.workspaceFolders[0].uri),
-  '.foam',
-  'templates'
-);
+export const TEMPLATES_DIR = fromVsCodeUri(
+  workspace.workspaceFolders[0].uri
+).joinPath('.foam', 'templates');
 
 /**
  * The URI of the default template
  */
-export const DEFAULT_TEMPLATE_URI = URI.joinPath(TEMPLATES_DIR, 'new-note.md');
+export const DEFAULT_TEMPLATE_URI = TEMPLATES_DIR.joinPath('new-note.md');
 
 /**
  * The URI of the template for daily notes
  */
-export const DAILY_NOTE_TEMPLATE_URI = URI.joinPath(
-  TEMPLATES_DIR,
-  'daily-note.md'
-);
+export const DAILY_NOTE_TEMPLATE_URI = TEMPLATES_DIR.joinPath('daily-note.md');
 
 const WIKILINK_DEFAULT_TEMPLATE_TEXT = `# $\{1:$FOAM_TITLE}\n\n$0`;
 
@@ -79,9 +72,8 @@ export async function getTemplates(): Promise<URI[]> {
 export const NoteFactory = {
   /**
    * Creates a new note using a template.
-   * @param givenValues already resolved values of Foam template variables. These are used instead of resolving the Foam template variables.
-   * @param extraVariablesToResolve Foam template variables to resolve, in addition to those mentioned in the template.
    * @param templateUri the URI of the template to use.
+   * @param resolver the Resolver to use.
    * @param filepathFallbackURI the URI to use if the template does not specify the `filepath` metadata attribute. This is configurable by the caller for backwards compatibility purposes.
    * @param templateFallbackText the template text to use if the template does not exist. This is configurable by the caller for backwards compatibility purposes.
    */
@@ -89,9 +81,9 @@ export const NoteFactory = {
     templateUri: URI,
     resolver: Resolver,
     filepathFallbackURI?: URI,
-    templateFallbackText: string = ''
+    templateFallbackText = ''
   ): Promise<void> => {
-    const templateText = existsSync(URI.toFsPath(templateUri))
+    const templateText = existsSync(templateUri.toFsPath())
       ? await workspace.fs
           .readFile(toVsCodeUri(templateUri))
           .then(bytes => bytes.toString())
@@ -99,12 +91,13 @@ export const NoteFactory = {
 
     const selectedContent = findSelectionContent();
 
-    resolver.define('FOAM_SELECTED_TEXT', selectedContent?.content ?? '');
+    if (selectedContent?.content) {
+      resolver.define('FOAM_SELECTED_TEXT', selectedContent?.content);
+    }
+
     let templateWithResolvedVariables: string;
     try {
-      [, templateWithResolvedVariables] = await resolver.resolveText(
-        templateText
-      );
+      templateWithResolvedVariables = await resolver.resolveText(templateText);
     } catch (err) {
       if (err instanceof UserCancelledOperation) {
         return;
@@ -126,8 +119,8 @@ export const NoteFactory = {
       resolver
     );
 
-    if (existsSync(URI.toFsPath(filepath))) {
-      const filename = path.basename(filepath.path);
+    if (existsSync(filepath.toFsPath())) {
+      const filename = filepath.getBasename();
       const newFilepath = await askUserForFilepathConfirmation(
         filepath,
         filename
@@ -146,7 +139,7 @@ export const NoteFactory = {
     );
 
     if (selectedContent !== undefined) {
-      const newNoteTitle = URI.getFileNameWithoutExtension(filepath);
+      const newNoteTitle = filepath.getName();
 
       await replaceSelection(
         selectedContent.document,
@@ -166,11 +159,7 @@ export const NoteFactory = {
     templateFallbackText: string,
     targetDate: Date
   ): Promise<void> => {
-    const resolver = new Resolver(
-      new Map(),
-      targetDate,
-      new Set(['FOAM_SELECTED_TEXT'])
-    );
+    const resolver = new Resolver(new Map(), targetDate);
     return NoteFactory.createFromTemplate(
       DAILY_NOTE_TEMPLATE_URI,
       resolver,
@@ -190,8 +179,7 @@ export const NoteFactory = {
   ): Promise<void> => {
     const resolver = new Resolver(
       new Map().set('FOAM_TITLE', wikilinkPlaceholder),
-      new Date(),
-      new Set(['FOAM_TITLE', 'FOAM_SELECTED_TEXT'])
+      new Date()
     );
     return NoteFactory.createFromTemplate(
       DEFAULT_TEMPLATE_URI,
@@ -204,8 +192,8 @@ export const NoteFactory = {
 
 export const createTemplate = async (): Promise<void> => {
   const defaultFilename = 'new-template.md';
-  const defaultTemplate = URI.joinPath(TEMPLATES_DIR, defaultFilename);
-  const fsPath = URI.toFsPath(defaultTemplate);
+  const defaultTemplate = TEMPLATES_DIR.joinPath(defaultFilename);
+  const fsPath = defaultTemplate.toFsPath();
   const filename = await window.showInputBox({
     prompt: `Enter the filename for the new template`,
     value: fsPath,
@@ -233,7 +221,7 @@ async function askUserForFilepathConfirmation(
   defaultFilepath: URI,
   defaultFilename: string
 ) {
-  const fsPath = URI.toFsPath(defaultFilepath);
+  const fsPath = defaultFilepath.toFsPath();
   return await window.showInputBox({
     prompt: `Enter the filename for the new note`,
     value: fsPath,
@@ -253,12 +241,12 @@ export async function determineNewNoteFilepath(
   resolver: Resolver
 ): Promise<URI> {
   if (templateFilepathAttribute) {
-    const defaultFilepath = isAbsolute(templateFilepathAttribute)
-      ? URI.file(templateFilepathAttribute)
-      : URI.joinPath(
-          fromVsCodeUri(workspace.workspaceFolders[0].uri),
-          templateFilepathAttribute
-        );
+    let defaultFilepath = URI.file(templateFilepathAttribute);
+    if (!defaultFilepath.isAbsolute()) {
+      defaultFilepath = fromVsCodeUri(
+        workspace.workspaceFolders[0].uri
+      ).joinPath(templateFilepathAttribute);
+    }
     return defaultFilepath;
   }
 
@@ -266,9 +254,8 @@ export async function determineNewNoteFilepath(
     return fallbackURI;
   }
 
-  const defaultName = await resolver.resolve('FOAM_TITLE');
-  const defaultFilepath = URI.joinPath(
-    getCurrentEditorDirectory(),
+  const defaultName = await resolver.resolveFromName('FOAM_TITLE');
+  const defaultFilepath = getCurrentEditorDirectory().joinPath(
     `${defaultName}.md`
   );
   return defaultFilepath;

packages/foam-vscode/src/services/variable-resolver.spec.ts

@@ -1,20 +1,34 @@
 import { window } from 'vscode';
 import { Resolver } from './variable-resolver';
+import { Variable } from '../core/common/snippetParser';
 
 describe('substituteFoamVariables', () => {
   test('Does nothing if no Foam-specific variables are used', async () => {
     const input = `
-      # \${AnotherVariable} <-- Unrelated to foam
-      # \${AnotherVariable:default_value} <-- Unrelated to foam
-      # \${AnotherVariable:default_value/(.*)/\${1:/upcase}/}} <-- Unrelated to foam
-      # $AnotherVariable} <-- Unrelated to foam
-      # $CURRENT_YEAR-\${CURRENT_MONTH}-$CURRENT_DAY <-- Unrelated to foam
+      # \${AnotherVariable} <-- Unrelated to Foam
+      # \${AnotherVariable:default_value} <-- Unrelated to Foam
+      # \${AnotherVariable:default_value/(.*)/\${1:/upcase}/}} <-- Unrelated to Foam
+      # $AnotherVariable} <-- Unrelated to Foam
+      # $CURRENT_YEAR-\${CURRENT_MONTH}-$CURRENT_DAY <-- Unrelated to Foam
     `;
 
     const givenValues = new Map<string, string>();
     givenValues.set('FOAM_TITLE', 'My note title');
     const resolver = new Resolver(givenValues, new Date());
-    expect((await resolver.resolveText(input))[1]).toEqual(input);
+    expect(await resolver.resolveText(input)).toEqual(input);
+  });
+
+  test('Ignores variable-looking text values', async () => {
+    // Related to https://github.com/foambubble/foam/issues/602
+    const input = `
+        # \${CURRENT_DATE/.*/\${FOAM_TITLE}/} <-- FOAM_TITLE is not a variable here, but a text in a transform
+        # \${1|one,two,\${FOAM_TITLE}|} <-- FOAM_TITLE is not a variable here, but a text in a choice
+      `;
+
+    const givenValues = new Map<string, string>();
+    givenValues.set('FOAM_TITLE', 'My note title');
+    const resolver = new Resolver(givenValues, new Date());
+    expect(await resolver.resolveText(input)).toEqual(input);
   });
 
   test('Correctly substitutes variables that are substrings of one another', async () => {
@@ -22,32 +36,31 @@ describe('substituteFoamVariables', () => {
     // If we're not careful with how we substitute the values
     // we can end up putting the FOAM_TITLE in place FOAM_TITLE_NON_EXISTENT_VARIABLE should be.
     const input = `
-      # \${FOAM_TITLE}
-      # $FOAM_TITLE
-      # \${FOAM_TITLE_NON_EXISTENT_VARIABLE}
-      # $FOAM_TITLE_NON_EXISTENT_VARIABLE
-    `;
+        # \${FOAM_TITLE}
+        # $FOAM_TITLE
+        # \${FOAM_TITLE_NON_EXISTENT_VARIABLE}
+        # $FOAM_TITLE_NON_EXISTENT_VARIABLE
+      `;
 
     const expected = `
-      # My note title
-      # My note title
-      # \${FOAM_TITLE_NON_EXISTENT_VARIABLE}
-      # $FOAM_TITLE_NON_EXISTENT_VARIABLE
-    `;
+        # My note title
+        # My note title
+        # \${FOAM_TITLE_NON_EXISTENT_VARIABLE}
+        # $FOAM_TITLE_NON_EXISTENT_VARIABLE
+      `;
 
     const givenValues = new Map<string, string>();
     givenValues.set('FOAM_TITLE', 'My note title');
     const resolver = new Resolver(givenValues, new Date());
-    expect((await resolver.resolveText(input))[1]).toEqual(expected);
+    expect(await resolver.resolveText(input)).toEqual(expected);
   });
 });
 
 describe('resolveFoamVariables', () => {
   test('Does nothing for unknown Foam-specific variables', async () => {
-    const variables = ['FOAM_FOO'];
+    const variables = [new Variable('FOAM_FOO')];
 
     const expected = new Map<string, string>();
-    expected.set('FOAM_FOO', 'FOAM_FOO');
 
     const givenValues = new Map<string, string>();
     const resolver = new Resolver(givenValues, new Date());
@@ -56,7 +69,7 @@ describe('resolveFoamVariables', () => {
 
   test('Resolves FOAM_TITLE', async () => {
     const foamTitle = 'My note title';
-    const variables = ['FOAM_TITLE'];
+    const variables = [new Variable('FOAM_TITLE'), new Variable('FOAM_SLUG')];
 
     jest
       .spyOn(window, 'showInputBox')
@@ -64,6 +77,7 @@ describe('resolveFoamVariables', () => {
 
     const expected = new Map<string, string>();
     expected.set('FOAM_TITLE', foamTitle);
+    expected.set('FOAM_SLUG', 'my-note-title');
 
     const givenValues = new Map<string, string>();
     const resolver = new Resolver(givenValues, new Date());
@@ -72,7 +86,7 @@ describe('resolveFoamVariables', () => {
 
   test('Resolves FOAM_TITLE without asking the user when it is provided', async () => {
     const foamTitle = 'My note title';
-    const variables = ['FOAM_TITLE'];
+    const variables = [new Variable('FOAM_TITLE')];
 
     const expected = new Map<string, string>();
     expected.set('FOAM_TITLE', foamTitle);
@@ -85,18 +99,18 @@ describe('resolveFoamVariables', () => {
 
   test('Resolves FOAM_DATE_* properties with current day by default', async () => {
     const variables = [
-      'FOAM_DATE_YEAR',
-      'FOAM_DATE_YEAR_SHORT',
-      'FOAM_DATE_MONTH',
-      'FOAM_DATE_MONTH_NAME',
-      'FOAM_DATE_MONTH_NAME_SHORT',
-      'FOAM_DATE_DATE',
-      'FOAM_DATE_DAY_NAME',
-      'FOAM_DATE_DAY_NAME_SHORT',
-      'FOAM_DATE_HOUR',
-      'FOAM_DATE_MINUTE',
-      'FOAM_DATE_SECOND',
-      'FOAM_DATE_SECONDS_UNIX',
+      new Variable('FOAM_DATE_YEAR'),
+      new Variable('FOAM_DATE_YEAR_SHORT'),
+      new Variable('FOAM_DATE_MONTH'),
+      new Variable('FOAM_DATE_MONTH_NAME'),
+      new Variable('FOAM_DATE_MONTH_NAME_SHORT'),
+      new Variable('FOAM_DATE_DATE'),
+      new Variable('FOAM_DATE_DAY_NAME'),
+      new Variable('FOAM_DATE_DAY_NAME_SHORT'),
+      new Variable('FOAM_DATE_HOUR'),
+      new Variable('FOAM_DATE_MINUTE'),
+      new Variable('FOAM_DATE_SECOND'),
+      new Variable('FOAM_DATE_SECONDS_UNIX'),
     ];
 
     const expected = new Map<string, string>();
@@ -123,18 +137,18 @@ describe('resolveFoamVariables', () => {
   test('Resolves FOAM_DATE_* properties with given date', async () => {
     const targetDate = new Date(2021, 9, 12, 1, 2, 3);
     const variables = [
-      'FOAM_DATE_YEAR',
-      'FOAM_DATE_YEAR_SHORT',
-      'FOAM_DATE_MONTH',
-      'FOAM_DATE_MONTH_NAME',
-      'FOAM_DATE_MONTH_NAME_SHORT',
-      'FOAM_DATE_DATE',
-      'FOAM_DATE_DAY_NAME',
-      'FOAM_DATE_DAY_NAME_SHORT',
-      'FOAM_DATE_HOUR',
-      'FOAM_DATE_MINUTE',
-      'FOAM_DATE_SECOND',
-      'FOAM_DATE_SECONDS_UNIX',
+      new Variable('FOAM_DATE_YEAR'),
+      new Variable('FOAM_DATE_YEAR_SHORT'),
+      new Variable('FOAM_DATE_MONTH'),
+      new Variable('FOAM_DATE_MONTH_NAME'),
+      new Variable('FOAM_DATE_MONTH_NAME_SHORT'),
+      new Variable('FOAM_DATE_DATE'),
+      new Variable('FOAM_DATE_DAY_NAME'),
+      new Variable('FOAM_DATE_DAY_NAME_SHORT'),
+      new Variable('FOAM_DATE_HOUR'),
+      new Variable('FOAM_DATE_MINUTE'),
+      new Variable('FOAM_DATE_SECOND'),
+      new Variable('FOAM_DATE_SECONDS_UNIX'),
     ];
 
     const expected = new Map<string, string>();
@@ -164,16 +178,14 @@ describe('resolveFoamVariables', () => {
 describe('resolveFoamTemplateVariables', () => {
   test('Does nothing for template without Foam-specific variables', async () => {
     const input = `
-      # \${AnotherVariable} <-- Unrelated to foam
-      # \${AnotherVariable:default_value} <-- Unrelated to foam
-      # \${AnotherVariable:default_value/(.*)/\${1:/upcase}/}} <-- Unrelated to foam
-      # $AnotherVariable} <-- Unrelated to foam
-      # $CURRENT_YEAR-\${CURRENT_MONTH}-$CURRENT_DAY <-- Unrelated to foam
-    `;
+        # \${AnotherVariable} <-- Unrelated to Foam
+        # \${AnotherVariable:default_value} <-- Unrelated to Foam
+        # \${AnotherVariable:default_value/(.*)/\${1:/upcase}/}} <-- Unrelated to Foam
+        # $AnotherVariable} <-- Unrelated to Foam
+        # $CURRENT_YEAR-\${CURRENT_MONTH}-$CURRENT_DAY <-- Unrelated to Foam
+      `;
 
-    const expectedMap = new Map<string, string>();
-    const expectedString = input;
-    const expected = [expectedMap, expectedString];
+    const expected = input;
 
     const resolver = new Resolver(new Map(), new Date());
     expect(await resolver.resolveText(input)).toEqual(expected);
@@ -181,48 +193,17 @@ describe('resolveFoamTemplateVariables', () => {
 
   test('Does nothing for unknown Foam-specific variables', async () => {
     const input = `
-      # $FOAM_FOO
-      # \${FOAM_FOO}
-      # \${FOAM_FOO:default_value}
-      # \${FOAM_FOO:default_value/(.*)/\${1:/upcase}/}}
-    `;
-
-    const expectedMap = new Map<string, string>();
-    const expectedString = input;
-    const expected = [expectedMap, expectedString];
+        # $FOAM_FOO
+        # \${FOAM_FOO}
+        # \${FOAM_FOO:default_value}
+        # \${FOAM_FOO:default_value/(.*)/\${1:/upcase}/}}
+      `;
 
+    const expected = input;
     const resolver = new Resolver(new Map(), new Date());
     expect(await resolver.resolveText(input)).toEqual(expected);
   });
 
-  test('Allows extra variables to be provided; only resolves the unique set', async () => {
-    const foamTitle = 'My note title';
-
-    jest
-      .spyOn(window, 'showInputBox')
-      .mockImplementationOnce(jest.fn(() => Promise.resolve(foamTitle)));
-
-    const input = `
-      # $FOAM_TITLE
-    `;
-
-    const expectedOutput = `
-      # My note title
-    `;
-
-    const expectedMap = new Map<string, string>();
-    expectedMap.set('FOAM_TITLE', foamTitle);
-
-    const expected = [expectedMap, expectedOutput];
-
-    const resolver = new Resolver(
-      new Map(),
-      new Date(),
-      new Set(['FOAM_TITLE'])
-    );
-    expect(await resolver.resolveText(input)).toEqual(expected);
-  });
-
   test('Appends FOAM_SELECTED_TEXT with a newline to the template if there is selected text but FOAM_SELECTED_TEXT is not referenced and the template ends in a newline', async () => {
     const foamTitle = 'My note title';
 
@@ -232,20 +213,11 @@ describe('resolveFoamTemplateVariables', () => {
 
     const input = `# \${FOAM_TITLE}\n`;
 
-    const expectedOutput = `# My note title\nSelected text\n`;
+    const expected = `# My note title\nSelected text\n`;
 
-    const expectedMap = new Map<string, string>();
-    expectedMap.set('FOAM_TITLE', foamTitle);
-    expectedMap.set('FOAM_SELECTED_TEXT', 'Selected text');
-
-    const expected = [expectedMap, expectedOutput];
     const givenValues = new Map<string, string>();
     givenValues.set('FOAM_SELECTED_TEXT', 'Selected text');
-    const resolver = new Resolver(
-      givenValues,
-      new Date(),
-      new Set(['FOAM_TITLE', 'FOAM_SELECTED_TEXT'])
-    );
+    const resolver = new Resolver(givenValues, new Date());
     expect(await resolver.resolveText(input)).toEqual(expected);
   });
 
@@ -258,20 +230,11 @@ describe('resolveFoamTemplateVariables', () => {
 
     const input = `# \${FOAM_TITLE}\n\n`;
 
-    const expectedOutput = `# My note title\n\nSelected text\n`;
+    const expected = `# My note title\n\nSelected text\n`;
 
-    const expectedMap = new Map<string, string>();
-    expectedMap.set('FOAM_TITLE', foamTitle);
-    expectedMap.set('FOAM_SELECTED_TEXT', 'Selected text');
-
-    const expected = [expectedMap, expectedOutput];
     const givenValues = new Map<string, string>();
     givenValues.set('FOAM_SELECTED_TEXT', 'Selected text');
-    const resolver = new Resolver(
-      givenValues,
-      new Date(),
-      new Set(['FOAM_TITLE', 'FOAM_SELECTED_TEXT'])
-    );
+    const resolver = new Resolver(givenValues, new Date());
     expect(await resolver.resolveText(input)).toEqual(expected);
   });
 
@@ -284,20 +247,11 @@ describe('resolveFoamTemplateVariables', () => {
 
     const input = `# \${FOAM_TITLE}`;
 
-    const expectedOutput = '# My note title\nSelected text';
+    const expected = '# My note title\nSelected text';
 
-    const expectedMap = new Map<string, string>();
-    expectedMap.set('FOAM_TITLE', foamTitle);
-    expectedMap.set('FOAM_SELECTED_TEXT', 'Selected text');
-
-    const expected = [expectedMap, expectedOutput];
     const givenValues = new Map<string, string>();
     givenValues.set('FOAM_SELECTED_TEXT', 'Selected text');
-    const resolver = new Resolver(
-      givenValues,
-      new Date(),
-      new Set(['FOAM_TITLE', 'FOAM_SELECTED_TEXT'])
-    );
+    const resolver = new Resolver(givenValues, new Date());
     expect(await resolver.resolveText(input)).toEqual(expected);
   });
 
@@ -309,25 +263,15 @@ describe('resolveFoamTemplateVariables', () => {
       .mockImplementationOnce(jest.fn(() => Promise.resolve(foamTitle)));
 
     const input = `
-      # \${FOAM_TITLE}
-      `;
+        # \${FOAM_TITLE}
+        `;
 
-    const expectedOutput = `
-      # My note title
-      `;
+    const expected = `
+        # My note title
+        `;
 
-    const expectedMap = new Map<string, string>();
-    expectedMap.set('FOAM_TITLE', foamTitle);
-    expectedMap.set('FOAM_SELECTED_TEXT', '');
-
-    const expected = [expectedMap, expectedOutput];
     const givenValues = new Map<string, string>();
-    givenValues.set('FOAM_SELECTED_TEXT', '');
-    const resolver = new Resolver(
-      givenValues,
-      new Date(),
-      new Set(['FOAM_TITLE', 'FOAM_SELECTED_TEXT'])
-    );
+    const resolver = new Resolver(givenValues, new Date());
     expect(await resolver.resolveText(input)).toEqual(expected);
   });
 });

packages/foam-vscode/src/services/variable-resolver.ts

@@ -1,9 +1,16 @@
 import { findSelectionContent } from './editor';
 import { window } from 'vscode';
 import { UserCancelledOperation } from './errors';
+import { toSlug } from '../utils/slug';
+import {
+  SnippetParser,
+  Variable,
+  VariableResolver,
+} from '../core/common/snippetParser';
 
 const knownFoamVariables = new Set([
   'FOAM_TITLE',
+  'FOAM_SLUG',
   'FOAM_SELECTED_TEXT',
   'FOAM_DATE_YEAR',
   'FOAM_DATE_YEAR_SHORT',
@@ -19,54 +26,17 @@ const knownFoamVariables = new Set([
   'FOAM_DATE_SECONDS_UNIX',
 ]);
 
-export function substituteVariables(
-  text: string,
-  variables: Map<string, string>
-) {
-  variables.forEach((value, variable) => {
-    const regex = new RegExp(
-      // Matches a limited subset of the the TextMate variable syntax:
-      //  ${VARIABLE}  OR   $VARIABLE
-      `\\\${${variable}}|\\$${variable}(\\W|$)`,
-      // The latter is more complicated, since it needs to avoid replacing
-      // longer variable names with the values of variables that are
-      // substrings of the longer ones (e.g. `$FOO` and `$FOOBAR`. If you
-      // replace $FOO first, and aren't careful, you replace the first
-      // characters of `$FOOBAR`)
-      'g' // 'g' => Global replacement (i.e. not just the first instance)
-    );
-    text = text.replace(regex, `${value}$1`);
-  });
-
-  return text;
-}
-
-export function findFoamVariables(templateText: string): string[] {
-  const regex = /\$(FOAM_[_a-zA-Z0-9]*)|\${(FOAM_[[_a-zA-Z0-9]*)}/g;
-  var matches = [];
-  const output: string[] = [];
-  while ((matches = regex.exec(templateText))) {
-    output.push(matches[1] || matches[2]);
-  }
-  const uniqVariables = [...new Set(output)];
-  const knownVariables = uniqVariables.filter(x => knownFoamVariables.has(x));
-  return knownVariables;
-}
-
-export class Resolver {
-  promises = new Map<string, Thenable<string>>();
-
+export class Resolver implements VariableResolver {
+  private promises = new Map<string, Promise<string | undefined>>();
   /**
    * Create a resolver
    *
    * @param givenValues the map of variable name to value
    * @param foamDate the date used to fill FOAM_DATE_* variables
-   * @param extraVariablesToResolve other variables to always resolve, even if not present in text
    */
   constructor(
     private givenValues: Map<string, string>,
-    private foamDate: Date,
-    private extraVariablesToResolve: Set<string> = new Set()
+    private foamDate: Date
   ) {}
 
   /**
@@ -86,31 +56,38 @@ export class Resolver {
    * @returns an array, where the first element is the resolution map,
    *          and the second is the processed text
    */
-  async resolveText(text: string): Promise<[Map<string, string>, string]> {
-    const variablesInTemplate = findFoamVariables(text.toString());
-    const variables = variablesInTemplate.concat(
-      ...this.extraVariablesToResolve
+  async resolveText(text: string): Promise<string> {
+    let snippet = new SnippetParser().parse(text, false, false);
+    let foamVariablesInTemplate = new Set(
+      snippet
+        .variables()
+        .map(v => v.name)
+        .filter(name => knownFoamVariables.has(name))
     );
-    const uniqVariables = [...new Set(variables)];
-
-    const resolvedValues = await this.resolveAll(uniqVariables);
 
+    // Add FOAM_SELECTED_TEXT to the template text if required
+    // and re-parse the template text.
     if (
-      resolvedValues.get('FOAM_SELECTED_TEXT') &&
-      !variablesInTemplate.includes('FOAM_SELECTED_TEXT')
+      this.givenValues.has('FOAM_SELECTED_TEXT') &&
+      !foamVariablesInTemplate.has('FOAM_SELECTED_TEXT')
     ) {
-      text = text.endsWith('\n')
-        ? `${text}\${FOAM_SELECTED_TEXT}\n`
-        : `${text}\n\${FOAM_SELECTED_TEXT}`;
-
-      variablesInTemplate.push('FOAM_SELECTED_TEXT');
-      variables.push('FOAM_SELECTED_TEXT');
-      uniqVariables.push('FOAM_SELECTED_TEXT');
+      const token = '$FOAM_SELECTED_TEXT';
+      if (text.endsWith('\n')) {
+        text = `${text}${token}\n`;
+      } else {
+        text = `${text}\n${token}`;
+      }
+      snippet = new SnippetParser().parse(text, false, false);
+      foamVariablesInTemplate = new Set(
+        snippet
+          .variables()
+          .map(v => v.name)
+          .filter(name => knownFoamVariables.has(name))
+      );
     }
 
-    const subbedText = substituteVariables(text.toString(), resolvedValues);
-
-    return [resolvedValues, subbedText];
+    await snippet.resolveVariables(this, foamVariablesInTemplate);
+    return snippet.snippetTextWithVariablesSubstituted(foamVariablesInTemplate);
   }
 
   /**
@@ -119,19 +96,16 @@ export class Resolver {
    * @param variables a list of variables to resolve
    * @returns a Map of variable name to its value
    */
-  async resolveAll(variables: string[]): Promise<Map<string, string>> {
-    const promises = variables.map(async variable =>
-      Promise.resolve([variable, await this.resolve(variable)])
-    );
+  async resolveAll(variables: Variable[]): Promise<Map<string, string>> {
+    await Promise.all(variables.map(variable => variable.resolve(this)));
 
-    const results = await Promise.all(promises);
-
-    const valueByName = new Map<string, string>();
-    results.forEach(([variable, value]) => {
-      valueByName.set(variable, value);
+    const resolvedValues = new Map<string, string>();
+    variables.forEach(variable => {
+      if (variable.children.length > 0) {
+        resolvedValues.set(variable.name, variable.toString());
+      }
     });
-
-    return valueByName;
+    return resolvedValues;
   }
 
   /**
@@ -140,7 +114,15 @@ export class Resolver {
    * @param name the variable name
    * @returns the resolved value, or the name of the variable if nothing is found
    */
-  resolve(name: string): Thenable<string> {
+  async resolveFromName(name: string): Promise<string> {
+    const variable = new Variable(name);
+    await variable.resolve(this);
+
+    return (variable.children[0] ?? name).toString();
+  }
+
+  async resolve(variable: Variable): Promise<string | undefined> {
+    const name = variable.name;
     if (this.givenValues.has(name)) {
       this.promises.set(name, Promise.resolve(this.givenValues.get(name)));
     } else if (!this.promises.has(name)) {
@@ -148,6 +130,14 @@ export class Resolver {
         case 'FOAM_TITLE':
           this.promises.set(name, resolveFoamTitle());
           break;
+        case 'FOAM_SLUG':
+          this.promises.set(
+            name,
+            Promise.resolve(
+              toSlug(await this.resolve(new Variable('FOAM_TITLE')))
+            )
+          );
+          break;
         case 'FOAM_SELECTED_TEXT':
           this.promises.set(name, Promise.resolve(resolveFoamSelectedText()));
           break;
@@ -263,7 +253,7 @@ export class Resolver {
           );
           break;
         default:
-          this.promises.set(name, Promise.resolve(name));
+          this.promises.set(name, Promise.resolve(undefined));
           break;
       }
     }

packages/foam-vscode/src/test/run-tests.ts

@@ -1,6 +1,4 @@
-import * as path from 'path';
-import fs from 'fs';
-import os from 'os';
+import path from 'path';
 import { runTests } from 'vscode-test';
 import { runUnit } from './suite-unit';
 
@@ -31,27 +29,21 @@ async function main() {
       console.log('Running e2e tests');
       // The folder containing the Extension Manifest package.json
       // Passed to `--extensionDevelopmentPath`
-      const extensionDevelopmentPath = path.resolve(__dirname, '../../');
+      const extensionDevelopmentPath = path.join(__dirname, '..', '..');
       // The path to the extension test script
       // Passed to --extensionTestsPath
-      const extensionTestsPath = path.resolve(__dirname, './suite');
-      const tmpWorkspaceDir = fs.mkdtempSync(path.join(os.tmpdir(), 'foam-'));
+      const extensionTestsPath = path.join(__dirname, 'suite');
 
       // Download VS Code, unzip it and run the integration test
       await runTests({
         extensionDevelopmentPath,
         extensionTestsPath,
         launchArgs: [
-          tmpWorkspaceDir,
+          path.join(extensionDevelopmentPath, '.test-workspace'),
           '--disable-extensions',
           '--disable-workspace-trust',
         ],
-        // Running the tests with vscode 1.53.0 is causing issues in the output/error stream management,
-        // which is causing a stack overflow, possibly due to a recursive callback.
-        // Also see https://github.com/foambubble/foam/pull/479#issuecomment-774167127
-        // Forcing the version to 1.52.0 solves the problem.
-        // TODO: to review, further investigate, and roll back this workaround.
-        version: '1.52.0',
+        version: '1.60.0',
       });
     } catch (err) {
       console.log('Error occurred while running Foam e2e tests:', err);

packages/foam-vscode/src/test/suite-unit.ts

@@ -8,32 +8,30 @@
  *   they will make direct use of the vscode API to be invoked as commands, create editors,
  *   and so on..
  */
-import path from 'path';
-import { runCLI } from '@jest/core';
 
-const rootDir = path.resolve(__dirname, '../..');
+/* eslint-disable import/first */
+
+// Set before imports, see https://github.com/facebook/jest/issues/12162
+process.env.FORCE_COLOR = '1';
+process.env.NODE_ENV = 'test';
+
+// eslint-disable-next-line import/no-extraneous-dependencies
+import { runCLI } from '@jest/core';
+import path from 'path';
+
+const rootDir = path.join(__dirname, '..', '..');
 
 export function runUnit(): Promise<void> {
-  process.env.FORCE_COLOR = '1';
-  process.env.NODE_ENV = 'test';
-  process.env.BABEL_ENV = 'test';
-
+  // eslint-disable-next-line no-async-promise-executor
   return new Promise(async (resolve, reject) => {
     try {
       const { results } = await runCLI(
         {
           rootDir,
           roots: ['<rootDir>/src'],
-          transform: JSON.stringify({ '^.+\\.ts$': 'ts-jest' }),
           runInBand: true,
           testRegex: '\\.(test)\\.ts$',
           setupFiles: ['<rootDir>/src/test/support/jest-setup.ts'],
-          setupFilesAfterEnv: ['jest-extended'],
-          globals: JSON.stringify({
-            'ts-jest': {
-              tsconfig: path.resolve(rootDir, './tsconfig.json'),
-            },
-          }),
           testTimeout: 20000,
           verbose: false,
           silent: false,

packages/foam-vscode/src/test/suite.ts

@@ -9,42 +9,48 @@
  *   and so on..
  */
 
-import path from 'path';
-import { runCLI } from '@jest/core';
+/* eslint-disable import/first */
 
-const rootDir = path.resolve(__dirname, '../..');
+// Set before imports, see https://github.com/facebook/jest/issues/12162
+process.env.FORCE_COLOR = '1';
+process.env.NODE_ENV = 'test';
+
+// eslint-disable-next-line import/no-extraneous-dependencies
+import { runCLI } from '@jest/core';
+import { cleanWorkspace } from './test-utils-vscode';
+import path from 'path';
+
+const rootDir = path.join(__dirname, '../..');
 
 export function run(): Promise<void> {
   const errWrite = process.stderr.write;
+
+  let remaining = '';
   process.stderr.write = (buffer: string) => {
-    console.log(buffer);
+    const lines = (remaining + buffer).split('\n');
+    remaining = lines.pop() as string;
+    // Trim long lines because some uninformative code dumps will flood the
+    // console or, worse, be suppressed altogether because of their size.
+    lines.forEach(l => console.log(l.substr(0, 300)));
     return true;
   };
+
   // process.on('unhandledRejection', err => {
   //   throw err;
   // });
-  process.env.FORCE_COLOR = '1';
-  process.env.NODE_ENV = 'test';
-  process.env.BABEL_ENV = 'test';
 
+  // eslint-disable-next-line no-async-promise-executor
   return new Promise(async (resolve, reject) => {
+    await cleanWorkspace();
     try {
       const { results } = await runCLI(
         {
           rootDir,
           roots: ['<rootDir>/src'],
-          transform: JSON.stringify({ '^.+\\.ts$': 'ts-jest' }),
           runInBand: true,
           testRegex: '\\.(test|spec)\\.ts$',
-          testEnvironment:
-            '<rootDir>/src/test/support/extended-vscode-environment.js',
+          testEnvironment: '<rootDir>/src/test/support/vscode-environment.js',
           setupFiles: ['<rootDir>/src/test/support/jest-setup.ts'],
-          setupFilesAfterEnv: ['jest-extended'],
-          globals: JSON.stringify({
-            'ts-jest': {
-              tsconfig: path.resolve(rootDir, './tsconfig.json'),
-            },
-          }),
           testTimeout: 30000,
           useStderr: true,
           verbose: true,
@@ -71,6 +77,7 @@ export function run(): Promise<void> {
       return reject(error);
     } finally {
       process.stderr.write = errWrite.bind(process.stderr);
+      await cleanWorkspace();
     }
   });
 }

packages/foam-vscode/src/test/support/vscode-environment.js

@@ -1,27 +1,27 @@
-// Based on https://github.com/svsool/vscode-memo/blob/master/src/test/env/ExtendedVscodeEnvironment.js
-const VscodeEnvironment = require('jest-environment-vscode');
+const NodeEnvironment = require('jest-environment-node');
 const vscode = require('vscode');
 
-const initialVscode = vscode;
-class ExtendedVscodeEnvironment extends VscodeEnvironment {
+class VscodeEnvironment extends NodeEnvironment {
   async setup() {
     await super.setup();
+    this.global.vscode = vscode;
+
     // Expose RegExp otherwise document.getWordRangeAtPosition won't work as supposed.
     // Implementation of getWordRangeAtPosition uses "instanceof RegExp" which returns false
     // due to Jest running tests in the different vm context.
     // See https://github.com/nodejs/node-v0.x-archive/issues/1277.
     // And also https://github.com/microsoft/vscode-test/issues/37#issuecomment-700167820
     this.global.RegExp = RegExp;
-    this.global.vscode = vscode;
 
     vscode.workspace
       .getConfiguration()
       .update('foam.edit.linkReferenceDefinitions', 'off');
   }
+
   async teardown() {
-    this.global.vscode = initialVscode;
+    this.global.vscode = {};
     await super.teardown();
   }
 }
 
-module.exports = ExtendedVscodeEnvironment;
+module.exports = VscodeEnvironment;

packages/foam-vscode/src/test/test-utils-vscode.ts

@@ -13,7 +13,7 @@ import { randomString, wait } from './test-utils';
 Logger.setLevel('error');
 
 export const cleanWorkspace = async () => {
-  const files = await vscode.workspace.findFiles('**', '.vscode');
+  const files = await vscode.workspace.findFiles('**', '{.vscode,.keep}');
   await Promise.all(files.map(f => vscode.workspace.fs.delete(f)));
 };
 
@@ -28,7 +28,8 @@ export const closeEditors = async () => {
   await wait(100);
 };
 
-export const deleteFile = (uri: URI) => {
+export const deleteFile = (file: URI | { uri: URI }) => {
+  const uri = 'uri' in file ? file.uri : file;
   return vscode.workspace.fs.delete(toVsCodeUri(uri), { recursive: true });
 };
 
@@ -42,7 +43,7 @@ export const deleteFile = (uri: URI) => {
 export const getUriInWorkspace = (...filepath: string[]) => {
   const rootUri = fromVsCodeUri(vscode.workspace.workspaceFolders[0].uri);
   filepath = filepath.length > 0 ? filepath : [randomString() + '.md'];
-  const uri = URI.joinPath(rootUri, ...filepath);
+  const uri = rootUri.joinPath(...filepath);
   return uri;
 };
 
@@ -55,7 +56,7 @@ export const getUriInWorkspace = (...filepath: string[]) => {
  */
 export const createFile = async (content: string, filepath: string[] = []) => {
   const uri = getUriInWorkspace(...filepath);
-  const filenameComponents = path.parse(URI.toFsPath(uri));
+  const filenameComponents = path.parse(uri.toFsPath());
   await vscode.workspace.fs.writeFile(
     toVsCodeUri(uri),
     new TextEncoder().encode(content)
@@ -64,7 +65,7 @@ export const createFile = async (content: string, filepath: string[] = []) => {
 };
 
 export const createNote = (r: Resource) => {
-  let content = `# ${r.title}
+  const content = `# ${r.title}
 
   some content and ${r.links
     .map(l =>

packages/foam-vscode/src/test/test-utils.ts

@@ -1,19 +1,17 @@
 /*
  * This file should not depend on VS Code as it's used for unit tests
  */
-import path from 'path';
 import { Logger } from '../core/utils/log';
 import { Range } from '../core/model/range';
 import { URI } from '../core/model/uri';
 import { FoamWorkspace } from '../core/model/workspace';
 import { Matcher } from '../core/services/datastore';
-import { MarkdownResourceProvider } from '../core/markdown-provider';
+import { MarkdownResourceProvider } from '../core/services/markdown-provider';
 import { NoteLinkDefinition, Resource } from '../core/model/note';
 
 Logger.setLevel('error');
 
-export const TEST_DATA_DIR = URI.joinPath(
-  URI.file(__dirname),
+export const TEST_DATA_DIR = URI.file(__dirname).joinPath(
   '..',
   '..',
   'test-data'
@@ -50,15 +48,20 @@ export const createTestNote = (params: {
   links?: Array<{ slug: string } | { to: string }>;
   tags?: string[];
   text?: string;
+  sections?: string[];
   root?: URI;
 }): Resource => {
   const root = params.root ?? URI.file('/');
   return {
-    uri: URI.resolve(params.uri, root),
+    uri: root.resolve(params.uri),
     type: 'note',
     properties: {},
-    title: params.title ?? path.parse(strToUri(params.uri).path).base,
+    title: params.title ?? strToUri(params.uri).getBasename(),
     definitions: params.definitions ?? [],
+    sections: params.sections?.map(label => ({
+      label,
+      range: Range.create(0, 0, 1, 0),
+    })),
     tags:
       params.tags?.map(t => ({
         label: t,
@@ -85,6 +88,7 @@ export const createTestNote = (params: {
                 target: link.to,
                 label: 'link text',
                 range: range,
+                rawText: 'link text',
               };
         })
       : [],
@@ -106,3 +110,6 @@ export const randomString = (len = 5) =>
     .fill('')
     .map(() => chars.charAt(Math.floor(Math.random() * chars.length)))
     .join('');
+
+export const getRandomURI = () =>
+  URI.file('/random-uri-root/' + randomString() + '.md');

packages/foam-vscode/src/utils.test.ts

@@ -1,10 +1,4 @@
-import { dropExtension, removeBrackets, toTitleCase } from './utils';
-
-describe('dropExtension', () => {
-  test('returns file name without extension', () => {
-    expect(dropExtension('file.md')).toEqual('file');
-  });
-});
+import { removeBrackets, toTitleCase } from './utils';
 
 describe('removeBrackets', () => {
   it('removes the brackets', () => {

packages/foam-vscode/src/utils.ts

@@ -11,16 +11,12 @@ import {
   version,
   ViewColumn,
 } from 'vscode';
-import * as fs from 'fs';
 import matter from 'gray-matter';
 import removeMarkdown from 'remove-markdown';
-import os from 'os';
 import { toVsCodeUri } from './utils/vsc-utils';
 import { Logger } from './core/utils/log';
 import { URI } from './core/model/uri';
 
-export const isWindows = os.platform() === 'win32';
-
 export const docConfig = { tab: '  ', eol: '\r\n' };
 
 export const mdDocSelector = [
@@ -30,7 +26,7 @@ export const mdDocSelector = [
 
 export function loadDocConfig() {
   // Load workspace config
-  let activeEditor = window.activeTextEditor;
+  const activeEditor = window.activeTextEditor;
   if (!activeEditor) {
     Logger.debug('Failed to load config, no active editor');
     return;
@@ -38,8 +34,8 @@ export function loadDocConfig() {
 
   docConfig.eol = activeEditor.document.eol === EndOfLine.CRLF ? '\r\n' : '\n';
 
-  let tabSize = Number(activeEditor.options.tabSize);
-  let insertSpaces = activeEditor.options.insertSpaces;
+  const tabSize = Number(activeEditor.options.tabSize);
+  const insertSpaces = activeEditor.options.insertSpaces;
   if (insertSpaces) {
     docConfig.tab = ' '.repeat(tabSize);
   } else {
@@ -85,12 +81,6 @@ export function getText(range: Range): string {
   return window.activeTextEditor.document.getText(range);
 }
 
-export function dropExtension(path: string): string {
-  const parts = path.split('.');
-  parts.pop();
-  return parts.join('.');
-}
-
 /**
  * Used for the "Copy to Clipboard Without Brackets" command
  *
@@ -134,18 +124,6 @@ export function toTitleCase(word: string): string {
     .join(' ');
 }
 
-/**
- * Verify the given path exists in the file system
- *
- * @param path The path to verify
- */
-export function pathExists(path: URI) {
-  return fs.promises
-    .access(URI.toFsPath(path), fs.constants.F_OK)
-    .then(() => true)
-    .catch(() => false);
-}
-
 /**
  * Verify the given object is defined
  *
@@ -155,7 +133,7 @@ export function isSome<T>(
   value: T | null | undefined | void
 ): value is NonNullable<T> {
   //
-  return value != null; // eslint-disable-line
+  return value != null;
 }
 
 /**
@@ -166,7 +144,7 @@ export function isSome<T>(
 export function isNone<T>(
   value: T | null | undefined | void
 ): value is null | undefined | void {
-  return value == null; // eslint-disable-line
+  return value == null;
 }
 
 export async function focusNote(

packages/foam-vscode/src/utils/grouped-resources-tree-data-provider.ts

@@ -16,7 +16,7 @@ import { FoamWorkspace } from '../core/model/workspace';
  * Provides the ability to expose a TreeDataExplorerView in VSCode. This class will
  * iterate over each Resource in the FoamWorkspace, call the provided filter predicate, and
  * display the Resources.
- * 
+ *
  * **NOTE**: In order for this provider to correctly function, you must define the following command in the package.json file:
    * ```
    * foam-vscode.group-${providerId}-by-folder
@@ -168,7 +168,7 @@ export class GroupedResourcesTreeDataProvider
   }
 
   private isMatch(uri: URI) {
-    return micromatch.isMatch(URI.toFsPath(uri), this.exclude);
+    return micromatch.isMatch(uri.toFsPath(), this.exclude);
   }
 
   private getGlobs(fsURI: URI[], globs: string[]): string[] {
@@ -216,7 +216,7 @@ export class UriTreeItem extends vscode.TreeItem {
       title?: string;
     } = {}
   ) {
-    super(options?.title ?? URI.getBasename(uri), options.collapsibleState);
+    super(options?.title ?? uri.getName(), options.collapsibleState);
     this.description = uri.path.replace(
       vscode.workspace.getWorkspaceFolder(toVsCodeUri(uri))?.uri.path,
       ''

packages/foam-vscode/src/utils/slug.ts

@@ -0,0 +1,3 @@
+import slugger from 'github-slugger';
+
+export const toSlug = (s: string) => slugger.slug(s);