Expand result with right arrow key

src/packages/command-panel/keymaps/command-panel.cson

@@ -19,3 +19,4 @@
 
 '.command-panel .preview-list':
   'left': 'command-panel:collapse-result'
+  'right': 'command-panel:expand-result'

src/packages/command-panel/lib/path-view.coffee

@@ -18,7 +18,12 @@ class PathView extends View
   initialize: ({previewList}) ->
     @on 'mousedown', @onPathSelected
     previewList.command 'command-panel:collapse-result', =>
-      @collapse(true) if @find('.selected').length
+      @collapse(true) if @isSelected()
+    previewList.command 'command-panel:expand-result', =>
+      @expand(true) if @isSelected()
+
+  isSelected: ->
+    @hasClass('selected') or @find('.selected').length
 
   onPathSelected: (event) =>
     e = $(event.target)

src/packages/command-panel/spec/command-panel-spec.coffee

@@ -479,9 +479,11 @@ describe "CommandPanel", ->
         previewList.find('li.path:first-child').mousedown()
         expect(previewList.find('li.path:first-child ul.matches')).toBeVisible()
 
-    describe "when command-panel:collapse-result is triggered", ->
-      it "collapses the path of the selected operation", ->
+    describe "when command-panel:collapse-result and command-panel:expand-result are triggered", ->
+      it "collapses and expands the path of the selection", ->
         rootView.attachToDom()
         expect(previewList.find('li.path:first-child ul.matches')).toBeVisible()
         previewList.trigger 'command-panel:collapse-result'
         expect(previewList.find('li.path:first-child ul.matches')).toBeHidden()
+        previewList.trigger 'command-panel:expand-result'
+        expect(previewList.find('li.path:first-child ul.matches')).toBeVisible()