Fix #505. Update grammars if any included grammars are updated.

src/app/null-grammar.coffee

@@ -15,6 +15,6 @@ class NullGrammar
   tokenizeLine: (line) ->
     { tokens: [new Token(value: line, scopes: ['null-grammar.text.plain'])] }
 
-  grammarAddedOrRemoved: -> # no op
+  grammarUpdated: -> # noop
 
 _.extend NullGrammar.prototype, EventEmitter

src/app/syntax.coffee

@@ -34,16 +34,17 @@ class Syntax
     previousGrammars = new Array(@grammars...)
     @grammars.push(grammar)
     @grammarsByScopeName[grammar.scopeName] = grammar
-    @notifyOtherGrammars(previousGrammars, grammar.scopeName)
+    @grammarUpdated(grammar.scopeName)
     @trigger 'grammar-added', grammar
 
   removeGrammar: (grammar) ->
     _.remove(@grammars, grammar)
     delete @grammarsByScopeName[grammar.scopeName]
-    @notifyOtherGrammars(@grammars, grammar.scopeName)
+    @grammarUpdated(grammar.scopeName)
 
-  notifyOtherGrammars: (grammars, scopeName) ->
-    grammar.grammarAddedOrRemoved(scopeName) for grammar in grammars
+  grammarUpdated: (scopeName) ->
+    for grammar in @grammars when grammar.scopeName isnt scopeName
+      grammar.grammarUpdated(scopeName)
 
   setGrammarOverrideForPath: (path, scopeName) ->
     @grammarOverridesByPath[path] = scopeName

src/app/text-mate-grammar.coffee

@@ -64,9 +64,10 @@ class TextMateGrammar
   addIncludedGrammarScope: (scope) ->
     @includedGrammarScopes.push(scope) unless _.include(@includedGrammarScopes, scope)
 
-  grammarAddedOrRemoved: (scopeName) =>
+  grammarUpdated: (scopeName) =>
     return unless _.include(@includedGrammarScopes, scopeName)
     @clearRules()
+    syntax.grammarUpdated(@scopeName)
     @trigger 'grammar-updated'
 
   getScore: (path, contents) ->