Handle trailing whitespace after decorators.

Author: vpetrovykh

Diff for: grammars/MagicPython.cson

@@ -1439,7 +1439,9 @@ repository:
     '''
     end: '''
       (?x)
-        ( \\) ) (?: (?=\\s*\\#|$) | (.*$) )
+        ( \\) )
+          # trailing whitespace and comments are legal
+          (?: (.*?) (?=\\s*(?:\\#|$)) )
         | (?=\\n|\\#)
       
     '''

Diff for: grammars/MagicPython.tmLanguage

@@ -2261,7 +2261,9 @@
 </string>
         <key>end</key>
         <string>(?x)
-  ( \) ) (?: (?=\s*\#|$) | (.*$) )
+  ( \) )
+    # trailing whitespace and comments are legal
+    (?: (.*?) (?=\s*(?:\#|$)) )
   | (?=\n|\#)
 </string>
         <key>beginCaptures</key>

Diff for: grammars/src/MagicPython.syntax.yaml

@@ -1081,7 +1081,9 @@ repository:
         (@) \s* (?=[[:alpha:]_]\w*)
     end: |
         (?x)
-          ( \) ) (?: (?=\s*\#|$) | (.*$) )
+          ( \) )
+            # trailing whitespace and comments are legal
+            (?: (.*?) (?=\s*(?:\#|$)) )
           | (?=\n|\#)
     beginCaptures:
       '1': {name: entity.name.function.decorator.python}

Diff for: test/functions/decorators7.py

@@ -0,0 +1,57 @@
+# this is testing trailing whitespace after the decorator
+# DO NOT DELETE TRAILING WHITESTAPCE IN THIS FILE
+@foo    
+@foo()    
+@bar	
+@bar()	
+@bar() illegal # legal
+@bar():   
+def baz(): pass
+
+
+
+
+
+#             : comment.line.number-sign.python, punctuation.definition.comment.python, source.python
+ this is testing trailing whitespace after the decorator : comment.line.number-sign.python, source.python
+#             : comment.line.number-sign.python, punctuation.definition.comment.python, source.python
+ DO NOT DELETE TRAILING WHITESTAPCE IN THIS FILE : comment.line.number-sign.python, source.python
+@             : entity.name.function.decorator.python, meta.function.decorator.python, source.python
+foo           : entity.name.function.decorator.python, meta.function.decorator.python, source.python
+              : meta.function.decorator.python, source.python
+@             : entity.name.function.decorator.python, meta.function.decorator.python, source.python
+foo           : entity.name.function.decorator.python, meta.function.decorator.python, source.python
+(             : meta.function.decorator.python, punctuation.definition.arguments.begin.python, source.python
+)             : meta.function.decorator.python, punctuation.definition.arguments.end.python, source.python
+              : source.python
+@             : entity.name.function.decorator.python, meta.function.decorator.python, source.python
+bar           : entity.name.function.decorator.python, meta.function.decorator.python, source.python
+	             : meta.function.decorator.python, source.python
+@             : entity.name.function.decorator.python, meta.function.decorator.python, source.python
+bar           : entity.name.function.decorator.python, meta.function.decorator.python, source.python
+(             : meta.function.decorator.python, punctuation.definition.arguments.begin.python, source.python
+)             : meta.function.decorator.python, punctuation.definition.arguments.end.python, source.python
+	             : source.python
+@             : entity.name.function.decorator.python, meta.function.decorator.python, source.python
+bar           : entity.name.function.decorator.python, meta.function.decorator.python, source.python
+(             : meta.function.decorator.python, punctuation.definition.arguments.begin.python, source.python
+)             : meta.function.decorator.python, punctuation.definition.arguments.end.python, source.python
+ illegal      : invalid.illegal.decorator.python, meta.function.decorator.python, source.python
+              : source.python
+#             : comment.line.number-sign.python, punctuation.definition.comment.python, source.python
+ legal        : comment.line.number-sign.python, source.python
+@             : entity.name.function.decorator.python, meta.function.decorator.python, source.python
+bar           : entity.name.function.decorator.python, meta.function.decorator.python, source.python
+(             : meta.function.decorator.python, punctuation.definition.arguments.begin.python, source.python
+)             : meta.function.decorator.python, punctuation.definition.arguments.end.python, source.python
+:             : invalid.illegal.decorator.python, meta.function.decorator.python, source.python
+              : source.python
+def           : meta.function.python, source.python, storage.type.function.python
+              : meta.function.python, source.python
+baz           : entity.name.function.python, meta.function.python, source.python
+(             : meta.function.parameters.python, meta.function.python, punctuation.definition.parameters.begin.python, source.python
+)             : meta.function.parameters.python, meta.function.python, punctuation.definition.parameters.end.python, source.python
+:             : meta.function.python, punctuation.section.function.begin.python, source.python
+              : source.python
+pass          : keyword.control.flow.python, source.python
+