init

bin/illiterate

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+#!/usr/bin/env node
+
+require('./illiterate.js');

bin/illiterate.js

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+var out = [];
+process.argv.slice(2).forEach(function(filename){
+	require('fs').readFileSync(filename).toString().split(/\r?\n/).forEach(function(line){
+		['    ', '\t'].forEach(function(delimiter){
+			if(line.indexOf(delimiter) === 0){
+				out.push(line.substring(delimiter.length));
+			}
+		});
+	});
+});
+console.log(out.join('\n'));

bonus/literate-javascript.tmLanguage

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>fileTypes</key>
+  <array>
+    <string>js.md</string>
+  </array>
+  <key>name</key>
+  <string>Literate Javascript</string>
+  <key>patterns</key>
+  <array>
+
+    <dict>
+      <key>match</key>
+      <string>^(?!([ ]{4}|\t)).*$</string>
+      <key>name</key>
+      <string>punctuation.definition.comment.litjs</string>
+    </dict>
+
+    <dict>
+      <key>begin</key>
+      <string>^([ ]{4}|\t)(?!$)</string>
+      <key>end</key>
+      <string>$</string>
+      <key>name</key>
+      <string>source.js.litjs</string>
+      <key>patterns</key>
+      <array>
+        <dict>
+          <key>include</key>
+          <string>source.js</string>
+        </dict>
+      </array>
+    </dict>
+
+  </dict>
+  <key>scopeName</key>
+  <string>source.js.litjs</string>
+  <key>uuid</key>
+  <string>df425cd1-34c4-49d2-ba09-f8445676ccd2</string>
+  
+</dict>
+</plist>

package.json

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+{
+  "name": "illiterate",
+  "version": "0.1.0",
+  "dependencies": {}
+}

readme.js.md

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+# Illiterate
+
+This file is both the source and the documentation for the `illiterate` binary. Perhaps it will become the main executable one day too... who knows ,~)
+
+## Usage
+
+Extract code block from markdown: `illiterate file.lang.md`
+
+This is useful to compile literate style code à la coffeescript, but for **any** language: `illiterate file.js.md > file.js`
+
+After being processed by `illiterate`, this readme file contains only the indented javascript code blocks. The output can be seen in [bin/illiterate.js](./bin/illiterate.js).
+
+## Build
+
+There is no real build process to speak of. I tend to do something like...
+
+> ./bin/illiterate readme.md > temp && rm bin/illiterate.js && mv temp bin/illiterate.js
+
+(temp file is used to prevent issues with overwriting currently executing file)
+
+## Source
+
+This file is itself the source for a binary which is capable of compiling itself. Anything in this file which is indented is interpreted by markdown as code, and ends up in the compiled output.
+
+### Initialize environment
+
+Create a variable to store output as it is built up from input files
+
+	var out = [];
+
+### Main loop
+
+Loop through each input file (specified as command line arguments)
+
+	process.argv.slice(2).forEach(function(filename){
+
+Read each file, and loop through each line
+
+		require('fs').readFileSync(filename).toString().split(/\r?\n/).forEach(function(line){
+
+If the line starts with a tab or four spaces, strip it out and include the line in  the output
+
+			['    ', '\t'].forEach(function(delimiter){
+				if(line.indexOf(delimiter) === 0){
+					out.push(line.substring(delimiter.length));
+				}
+			});
+
+		});
+
+	});
+
+### Output
+
+Finally, output all lines
+
+	console.log(out.join('\n'));