From 0dd8054d05d8286f2f7cbcf85456c6953a9b6146 Mon Sep 17 00:00:00 2001
From: "Arnold D. Robbins" <arnold@skeeve.com>
Date: Wed, 30 Nov 2016 21:27:52 +0200
Subject: Sync dfa with GNULIB.

---
 dfa.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'dfa.c')

diff --git a/dfa.c b/dfa.c
index 0a231050..ae64ba95 100644
--- a/dfa.c
+++ b/dfa.c
@@ -2652,6 +2652,12 @@ dfastate (state_num s, struct dfa *d, unsigned char uc, state_num trans[])
             continue;
           if (j == CHARCLASS_WORDS)
             continue;
+
+          /* If we have reset the bit that made us declare "matched", reset
+             that indicator, too.  This is required to avoid an infinite loop
+             with this command: echo cx | LC_ALL=C grep -E 'c\b[x ]'  */
+          if (!tstbit (uc, matches))
+            matched = false;
         }
 
 #ifdef DEBUG
-- 
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