From d6f20f3610af0648b00a3200a32e24b17c04d763 Mon Sep 17 00:00:00 2001
From: Kaz Kylheku <kaz@kylheku.com>
Date: Thu, 5 Jun 2014 08:43:17 -0700
Subject: * parser.l: Adding an explicit lexical rule to catch backslashes
 occurring within a regex, not followed by a character. This can happen in
 dynamically parsed regexes such as "abc\\".

---
 parser.l | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'parser.l')

diff --git a/parser.l b/parser.l
index a49e43d5..fa3c88cb 100644
--- a/parser.l
+++ b/parser.l
@@ -751,6 +751,11 @@ UONLY   {U2}{U}|{U3}{U}{U}|{U4}{U}{U}{U}
   return REGCHAR;
 }
 
+<REGEX>[\\] {
+  yyerrprepf(lit("dangling backslash in regex"), nao);
+  return ERRTOK;
+}
+
 <REGEX>{UANYN}  {
   wchar_t buf[8];
   utf8_from(buf, yytext);
-- 
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