From 08386ba2dcb388215113558f268d0cc4ef431c49 Mon Sep 17 00:00:00 2001
From: Sam Harwell <sam@tunnelvisionlabs.com>
Date: Fri, 22 Feb 2013 13:51:02 -0600
Subject: [PATCH] Simplify LEXER_CHAR_SET rule

---
 tool/src/org/antlr/v4/parse/ANTLRLexer.g | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/tool/src/org/antlr/v4/parse/ANTLRLexer.g b/tool/src/org/antlr/v4/parse/ANTLRLexer.g
index f97f5fa0b..ff04fa35f 100644
--- a/tool/src/org/antlr/v4/parse/ANTLRLexer.g
+++ b/tool/src/org/antlr/v4/parse/ANTLRLexer.g
@@ -288,8 +288,12 @@ options {k=1;}
 
 fragment
 LEXER_CHAR_SET
-    :   '[' ('\\]'|'\\' ~']'|~('\\'|']'))* ']'
-    ;
+	:	'['
+		(	'\\' .
+		|	~('\\'|']')
+		)*
+		']'
+	;
 
 // --------------
 // Argument specs