From a7d43c2cca789d0c7d57375156dda45decc1e685 Mon Sep 17 00:00:00 2001
From: Corey Johnson <cj@github.com>
Date: Tue, 22 May 2012 09:38:14 -0700
Subject: [PATCH] meta-alt-u unfolds lines at cursor

---
 spec/app/editor-spec.coffee   | 14 ++++++++++++++
 src/app/editor.coffee         |  4 ++++
 src/app/keymaps/editor.coffee |  1 +
 3 files changed, 19 insertions(+)

diff --git a/spec/app/editor-spec.coffee b/spec/app/editor-spec.coffee
index 797d0b214..01b7885d6 100644
--- a/spec/app/editor-spec.coffee
+++ b/spec/app/editor-spec.coffee
@@ -2436,6 +2436,20 @@ describe "Editor", ->
 
         expect(editor.getCursorBufferPosition()).toEqual [3, 0]
 
+    describe "when a cursor is on a fold placeholder line", ->
+      it "removes the associated fold and places the cursor at its beginning", ->
+        editor.getSelection().setBufferRange(new Range([3, 0], [9, 0]))
+        editor.trigger 'fold-selection'
+
+        editor.setCursorBufferPosition([3,0])
+        editor.trigger 'unfold'
+
+        expect(editor.find('.fold')).not.toExist()
+        expect(editor.visibleLines.find('.line:eq(4)').text()).toMatch /4-+/
+        expect(editor.visibleLines.find('.line:eq(5)').text()).toMatch /5/
+
+        expect(editor.getCursorBufferPosition()).toEqual [3, 0]
+
   describe "editor-path-change event", ->
     it "emits event when buffer's path is changed", ->
       editor = new Editor
diff --git a/src/app/editor.coffee b/src/app/editor.coffee
index fbcb0cab9..8031abdc2 100644
--- a/src/app/editor.coffee
+++ b/src/app/editor.coffee
@@ -119,6 +119,7 @@ class Editor extends View
       'redo': @redo
       'toggle-soft-wrap': @toggleSoftWrap
       'fold-selection': @foldSelection
+      'unfold': => @unfoldRow(@getCursorBufferPosition().row)
       'split-left': @splitLeft
       'split-right': @splitRight
       'split-up': @splitUp
@@ -681,6 +682,9 @@ class Editor extends View
 
   foldSelection: -> @getSelection().fold()
 
+  unfoldRow: (row) ->
+    @renderer.largestFoldForBufferRow(row)?.destroy()
+
   undo: ->
     if ranges = @buffer.undo()
       @setSelectedBufferRanges(ranges)
diff --git a/src/app/keymaps/editor.coffee b/src/app/keymaps/editor.coffee
index 37d2e9a8f..fe392b3dd 100644
--- a/src/app/keymaps/editor.coffee
+++ b/src/app/keymaps/editor.coffee
@@ -28,6 +28,7 @@ window.keymap.bindKeys '.editor',
   'meta-Z': 'redo'
   'alt-meta-w': 'toggle-soft-wrap'
   'alt-meta-f': 'fold-selection'
+  'alt-meta-u': 'unfold'
   'alt-meta-left': 'split-left'
   'alt-meta-right': 'split-right'
   'alt-meta-up': 'split-up'