Issue #670. 'THIS' tokens should trigger an implicit call.

lib/rewriter.js

@@ -408,7 +408,7 @@
     return _j;
   })();
   EXPRESSION_CLOSE = ['CATCH', 'WHEN', 'ELSE', 'FINALLY'].concat(EXPRESSION_END);
-  IMPLICIT_FUNC = ['IDENTIFIER', 'SUPER', ')', 'CALL_END', ']', 'INDEX_END', '@'];
+  IMPLICIT_FUNC = ['IDENTIFIER', 'SUPER', ')', 'CALL_END', ']', 'INDEX_END', '@', 'THIS'];
   IMPLICIT_CALL = ['IDENTIFIER', 'NUMBER', 'STRING', 'JS', 'REGEX', 'NEW', 'PARAM_START', 'CLASS', 'IF', 'UNLESS', 'TRY', 'SWITCH', 'THIS', 'NULL', 'UNARY', 'TRUE', 'FALSE', 'YES', 'NO', 'ON', 'OFF', '@', '->', '=>', '[', '(', '{'];
   IMPLICIT_BLOCK = ['->', '=>', '{', '[', ','];
   IMPLICIT_END = ['POST_IF', 'POST_UNLESS', 'FOR', 'WHILE', 'UNTIL', 'LOOP', 'TERMINATOR', 'INDENT'];

src/rewriter.coffee

@@ -329,7 +329,7 @@ EXPRESSION_END   = pair[1] for pair in BALANCED_PAIRS
 EXPRESSION_CLOSE = ['CATCH', 'WHEN', 'ELSE', 'FINALLY'].concat EXPRESSION_END
 
 # Tokens that, if followed by an `IMPLICIT_CALL`, indicate a function invocation.
-IMPLICIT_FUNC    = ['IDENTIFIER', 'SUPER', ')', 'CALL_END', ']', 'INDEX_END', '@']
+IMPLICIT_FUNC    = ['IDENTIFIER', 'SUPER', ')', 'CALL_END', ']', 'INDEX_END', '@', 'THIS']
 
 # If preceded by an `IMPLICIT_FUNC`, indicates a function invocation.
 IMPLICIT_CALL    = [

test/test_functions.coffee

@@ -220,3 +220,12 @@ obj =
 ok obj.func(101, 102, 103, 104) is undefined
 ok obj.param is 101
 ok obj.rest.join(' ') is '102 103 104'
+
+
+# `@` and `this` should both be able to invoke a method.
+func          = (arg) -> ok arg is true
+func.withAt   = -> @ true
+func.withThis = -> this true
+
+func.withAt()
+func.withThis()