Alt-meta-f folds the current selection

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())