fix vuejs#438 arguments with non-identifier chars

yyx990803 · yyx990803 · commit fa791a808445 · 2014-09-19T09:34:41.000-04:00
diff --git a/src/directive.js b/src/directive.js
@@ -1,5 +1,5 @@
 var dirId           = 1,
-    ARG_RE          = /^[\w\$-]+$/,
+    ARG_RE          = /^[^\{\?]+$/,
     FILTER_TOKEN_RE = /[^\s'"]+|'[^']+'|"[^"]+"/g,
     NESTING_RE      = /^\$(parent|root)\./,
     SINGLE_VAR_RE   = /^[\w\.$]+$/,
