Alt-meta-f folds the current selection

spec/atom/editor-spec.coffee

@@ -733,3 +733,10 @@ describe "Editor", ->
         editor.trigger "paste"
         expect(editor.buffer.getLine(1)).toBe "  var first = function(items) {"
 
+  describe "folding", ->
+    describe "when a fold-selection event is triggered", ->
+      it "folds the selected text and renders a placeholder for it", ->
+        editor.selection.setRange(new Range([4, 29], [7, 4]))
+        editor.trigger 'fold-selection'
+        expect(editor.lines.find('.line:eq(4)').text()).toBe '    while(items.length > 0) {...}'
+

src/atom/editor.coffee

@@ -58,6 +58,7 @@ class Editor extends View
       'meta-z': 'undo'
       'meta-Z': 'redo'
       'alt-meta-w': 'toggle-soft-wrap'
+      'alt-meta-f': 'fold-selection'
 
     @on 'move-right', => @moveCursorRight()
     @on 'move-left', => @moveCursorLeft()
@@ -76,6 +77,7 @@ class Editor extends View
     @on 'undo', => @undo()
     @on 'redo', => @redo()
     @on 'toggle-soft-wrap', => @toggleSoftWrap()
+    @on 'fold-selection', => @foldSelection()
 
   buildCursorAndSelection: ->
     @cursor = new Cursor(this)
@@ -273,6 +275,8 @@ class Editor extends View
   copySelection: -> @selection.copy()
   paste: -> @selection.insertText(atom.native.readFromPasteboard())
 
+  foldSelection: -> @selection.fold()
+
   backspace: ->
     @selectLeft() if @selection.isEmpty()
     @selection.delete()

src/atom/selection.coffee

@@ -1,4 +1,5 @@
 Cursor = require 'cursor'
+
 Range = require 'range'
 {View, $$} = require 'space-pen'
 
@@ -157,3 +158,6 @@ class Selection extends View
     return if @isEmpty()
     text = @editor.buffer.getTextInRange @getRange()
     atom.native.writeToPasteboard text
+
+  fold: ->
+    @editor.lineFolder.createFold(@getRange())