Merge pull request #10846 from atom/ku-pending-tabs-option

Add core setting for pending tabs configuration

spec/workspace-spec.coffee

@@ -1532,3 +1532,14 @@ describe "Workspace", ->
 
       atom.workspace.closeActivePaneItemOrEmptyPaneOrWindow()
       expect(atom.close).toHaveBeenCalled()
+
+  describe "when the core.allowPendingPaneItems option is falsey", ->
+    it "does not open item with `pending: true` option as pending", ->
+      editor = null
+      atom.config.set('core.allowPendingPaneItems', false)
+
+      waitsForPromise ->
+        atom.workspace.open('sample.js', pending: true).then (o) -> editor = o
+
+      runs ->
+        expect(editor.isPending()).toBeFalsy()

src/config-schema.coffee

@@ -108,6 +108,10 @@ module.exports =
         description: 'Automatically update Atom when a new release is available.'
         type: 'boolean'
         default: true
+      allowPendingPaneItems:
+        description: 'Allow items to be previewed without adding them to a pane permanently, such as when single clicking files in the tree view.'
+        type: 'boolean'
+        default: true
 
   editor:
     type: 'object'

src/workspace.coffee

@@ -414,6 +414,9 @@ class Workspace extends Model
     split = options.split
     uri = @project.resolvePath(uri)
 
+    if not atom.config.get('core.allowPendingPaneItems')
+      options.pending = false
+
     # Avoid adding URLs as recent documents to work-around this Spotlight crash:
     # https://github.com/atom/atom/issues/10071
     if uri? and not url.parse(uri).protocol?