Close inactive editor sessions on alt-meta-w

src/app/editor.coffee

@@ -176,6 +176,7 @@ class Editor extends View
         'editor:toggle-line-comments': @toggleLineCommentsInSelection
         'editor:log-cursor-scope': @logCursorScope
         'editor:checkout-head-revision': @checkoutHead
+        'editor:close-other-editors': @destroyInactiveEditSessions
 
     documentation = {}
     for name, method of editorBindings
@@ -457,6 +458,14 @@ class Editor extends View
       editSession.destroy()
       @trigger 'editor:edit-session-removed', [editSession, index]
 
+  destroyInactiveEditSessions: ->
+    index = 0
+    while session = @editSessions[index]
+      if @activeEditSession is session or session.buffer.isModified()
+        index++
+      else
+        @destroyEditSessionIndex(index)
+
   loadNextEditSession: ->
     nextIndex = (@getActiveEditSessionIndex() + 1) % @editSessions.length
     @setActiveEditSessionIndex(nextIndex)