Merge pull request #186 from atom/ns-fix-dead-keys-on-macos

Restore ability to bind dead keys such as alt-u on macOS

Author: Nathan Sobo

src/keymap-manager.coffee

@@ -487,7 +487,7 @@ class KeymapManager
     # 229, which is the "composition key code". This API is deprecated, but this
     # is the most simple and reliable way we found to ignore keystrokes that are
     # part of IME compositions.
-    if event.keyCode is 229
+    if event.keyCode is 229 and event.key isnt 'Dead'
       return
 
     keystroke = @keystrokeForKeyboardEvent(event)