From 8b1dff9d98a40b1695b34c0591b9aa20a38c6286 Mon Sep 17 00:00:00 2001
From: Tristan Hume <tristan.hume@jadedpixel.com>
Date: Fri, 26 Jul 2013 10:33:30 -0400
Subject: [PATCH] Allow ! in identifiers like Ruby

---
 lib/liquid/lexer.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/liquid/lexer.rb b/lib/liquid/lexer.rb
index d8d8b566..f33e13e5 100644
--- a/lib/liquid/lexer.rb
+++ b/lib/liquid/lexer.rb
@@ -29,7 +29,7 @@ module Liquid
       '[' => :open_square,
       ']' => :close_square
     }
-    IDENTIFIER = /[\w\-?]+/
+    IDENTIFIER = /[\w\-?!]+/
     SINGLE_STRING_LITERAL = /'[^\']*'/
     DOUBLE_STRING_LITERAL = /"[^\"]*"/
     INTEGER_LITERAL = /-?\d+/