From 2f6b67798ea507ec20a75d597fe27cf0ce75a71f Mon Sep 17 00:00:00 2001
From: Tobias Lutke <tobi@shopify.com>
Date: Tue, 30 Oct 2012 21:41:56 -0400
Subject: [PATCH] fixed but with single char identifiers

---
 ext/liquid/liquid_context.c   | 2 +-
 ext/liquid/liquid_context.leg | 2 +-
 test/liquid/parser_test.rb    | 1 +
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/ext/liquid/liquid_context.c b/ext/liquid/liquid_context.c
index 3690416..ef1c0cd 100644
--- a/ext/liquid/liquid_context.c
+++ b/ext/liquid/liquid_context.c
@@ -561,7 +561,7 @@ YY_RULE(int) yy_rangelet(yycontext *ctx)
 }
 YY_RULE(int) yy_identifier(yycontext *ctx)
 {  int yypos0= ctx->pos, yythunkpos0= ctx->thunkpos;
-  yyprintf((stderr, "%s\n", "identifier"));  if (!yymatchClass(ctx, (unsigned char *)"\000\000\000\000\000\000\000\000\376\377\377\007\376\377\377\007\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000")) goto l15;  if (!yymatchClass(ctx, (unsigned char *)"\000\000\000\000\000\040\377\003\376\377\377\207\376\377\377\007\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000")) goto l15;
+  yyprintf((stderr, "%s\n", "identifier"));  if (!yymatchClass(ctx, (unsigned char *)"\000\000\000\000\000\000\000\000\376\377\377\007\376\377\377\007\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000")) goto l15;
   l16:;	
   {  int yypos17= ctx->pos, yythunkpos17= ctx->thunkpos;  if (!yymatchClass(ctx, (unsigned char *)"\000\000\000\000\000\040\377\003\376\377\377\207\376\377\377\007\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000")) goto l17;  goto l16;
   l17:;	  ctx->pos= yypos17; ctx->thunkpos= yythunkpos17;
diff --git a/ext/liquid/liquid_context.leg b/ext/liquid/liquid_context.leg
index 5ea4317..64067ab 100644
--- a/ext/liquid/liquid_context.leg
+++ b/ext/liquid/liquid_context.leg
@@ -78,7 +78,7 @@ const   = "true"    { $$ = Qtrue; }
         ;
 
 digit = [0-9];
-identifier = [a-zA-Z][a-zA-Z0-9_\-]+[?!]?;
+identifier = [a-zA-Z][a-zA-Z0-9_\-]*[?!]?;
 
 %% 
 
diff --git a/test/liquid/parser_test.rb b/test/liquid/parser_test.rb
index 6b699b8..7ff4e3f 100644
--- a/test/liquid/parser_test.rb
+++ b/test/liquid/parser_test.rb
@@ -42,6 +42,7 @@ class ParserTest < Test::Unit::TestCase
   def test_lookups
     assert_equal [[:id, "variable"], [:lookup, nil]], Parser.parse('variable')
     assert_equal [[:id, "underscored_variable"], [:lookup, nil]], Parser.parse('underscored_variable')
+    assert_equal [[:id, "c"], [:lookup, nil]], Parser.parse('c')
   end
 
   def test_global_hash