Keymap normalizes key patterns so modifier keys can be listed in a random order.

src/app/binding-set.coffee

@@ -15,6 +15,7 @@ class BindingSet
     if _.isFunction(mapOrFunction)
       mapOrFunction
     else
+      mapOrFunction = @normalizeKeystrokePatterns(mapOrFunction)
       (event) =>
         for pattern, command of mapOrFunction
           return command if @eventMatchesPattern(event, pattern)
@@ -23,3 +24,16 @@ class BindingSet
   eventMatchesPattern: (event, pattern) ->
     pattern = pattern.replace(/^<|>$/g, '')
     event.keystroke == pattern
+
+  normalizeKeystrokePatterns: (map) ->
+    normalizedMap = {}
+    for pattern, event of map
+      normalizedMap[@normalizeKeystrokePattern(pattern)] = event
+    normalizedMap
+
+  normalizeKeystrokePattern: (pattern) ->
+    keys = pattern.split('-')
+    modifiers = keys[0...-1]
+    modifiers.sort()
+    [modifiers..., _.last(keys)].join('-')
+