Re: Problems of new regexp engine (that we know)

[h_east]

Hi, Bram

I found NFA regexp engine bug.

Prerequisite
vim 7.3.1004
set re=0

How to reproduce
vim -N -u NONE -i NONE --noplugin
o<Esc>
/\n*    or   /\_.*

Actual 
gone infinite loop.

How to take back control. (on linux)
pgrep -lf
kill -9 nnn           <-- nnn is vim process number checked by pgrep.


I attached patch.
Please check this.

Best regards,
Hirohito Higashi

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diff -r 39cff9b39394 src/regexp_nfa.c
--- a/src/regexp_nfa.c	Tue May 21 22:38:18 2013 +0200
+++ b/src/regexp_nfa.c	Wed May 22 18:04:03 2013 +0900
@@ -2931,8 +2931,10 @@
 	    c = *reginput;
 	    n = 1;
 	}
-	if (c == NUL)
+	if (c == NUL) {
 	    n = 0;
+	    reginput_updated = FALSE;
+	}
 
 	/* swap lists */
 	thislist = &list[flag];