Add unfold-all and bind it to ctrl-}

src/app/display-buffer.coffee

@@ -56,6 +56,10 @@ class DisplayBuffer
 
       @createFold(startRow, endRow)
 
+  unfoldAll: ->
+    for row in [@buffer.getLastRow()..0]
+      @activeFolds[row]?.forEach (fold) => @destroyFold(fold)
+
   foldBufferRow: (bufferRow) ->
     for currentRow in [bufferRow..0]
       [startRow, endRow] = @tokenizedBuffer.rowRangeForFoldAtBufferRow(currentRow) ? []
@@ -123,6 +127,7 @@ class DisplayBuffer
     folds = @activeFolds[bufferRow]
     _.remove(folds, fold)
     delete @foldsById[fold.id]
+    delete @activeFolds[bufferRow] if folds.length == 0
 
   largestFoldStartingAtBufferRow: (bufferRow) ->
     return unless folds = @activeFolds[bufferRow]

src/app/edit-session.coffee

@@ -198,6 +198,12 @@ class EditSession
   redo: ->
     @buffer.redo(this)
 
+  foldAll: ->
+    @displayBuffer.foldAll()
+
+  unfoldAll: ->
+    @displayBuffer.unfoldAll()
+
   foldCurrentRow: ->
     bufferRow = @bufferPositionForScreenPosition(@getCursorScreenPosition()).row
     @foldBufferRow(bufferRow)
@@ -215,9 +221,6 @@ class EditSession
   foldSelection: ->
     selection.fold() for selection in @getSelections()
 
-  foldAll: ->
-    @displayBuffer.foldAll()
-
   createFold: (startRow, endRow) ->
     @displayBuffer.createFold(startRow, endRow)
 

src/app/editor.coffee

@@ -139,6 +139,7 @@ class Editor extends View
         'newline-below': @insertNewlineBelow
         'toggle-soft-wrap': @toggleSoftWrap
         'fold-all': @foldAll
+        'unfold-all': @unfoldAll
         'fold-current-row': @foldCurrentRow
         'unfold-current-row': @unfoldCurrentRow
         'fold-selection': @foldSelection
@@ -223,6 +224,7 @@ class Editor extends View
   foldCurrentRow: -> @activeEditSession.foldCurrentRow()
   unfoldCurrentRow: -> @activeEditSession.unfoldCurrentRow()
   foldAll: -> @activeEditSession.foldAll()
+  unfoldAll: -> @activeEditSession.unfoldAll()
   foldSelection: -> @activeEditSession.foldSelection()
   destroyFold: (foldId) -> @activeEditSession.destroyFold(foldId)
   destroyFoldsContainingBufferRow: (bufferRow) -> @activeEditSession.destroyFoldsContainingBufferRow(bufferRow)

src/app/keymaps/editor.coffee

@@ -19,7 +19,8 @@ window.keymap.bindKeys '.editor',
   'alt-meta-w': 'toggle-soft-wrap'
   'ctrl-[': 'fold-current-row'
   'ctrl-]': 'unfold-current-row'
-  'ctrl-(': 'fold-all'
+  'ctrl-{': 'fold-all'
+  'ctrl-}': 'unfold-all'
   'alt-meta-ctrl-f': 'fold-selection'
   'alt-meta-left': 'split-left'
   'alt-meta-right': 'split-right'