* PATCH: Very serious bug: Bad pattern in precmd()
@ 2001-06-30 17:57 Bart Schaefer
0 siblings, 0 replies; only message in thread
From: Bart Schaefer @ 2001-06-30 17:57 UTC (permalink / raw)
To: zsh-workers
Try this only in a debugger or if you have another shell from which you
can kill the first one:
zsh% precmd() { echo [[ }
Zsh goes into an infinite loop printing `precmd: bad pattern: [['. This
does not happen in 3.0.8, but does happen in 3.1.9 (which is the oldest
3.1.x binary I have around).
This appears to have resulted from moving hbegin() to above preprompt()
in loop() -- hbegin() has the side-effect of resetting `errflag = 0'.
This was my fault, all the way back in article 10168, so it's been around
since 3.1.6-dev-20 without anyone catching it.
Index: Src/init.c
===================================================================
diff -c -r1.3 init.c
--- Src/init.c 2001/04/21 22:22:53 1.3
+++ Src/init.c 2001/06/30 17:51:19
@@ -107,7 +107,6 @@
pushheap();
for (;;) {
freeheap();
- errflag = 0;
hbegin(1); /* init history mech */
if (isset(SHINSTDIN)) {
setblock_stdin();
@@ -116,6 +115,7 @@
stophist = 3;
preprompt();
stophist = hstop;
+ errflag = 0;
}
}
intr(); /* interrupts on */
--
Bart Schaefer Brass Lantern Enterprises
http://www.well.com/user/barts http://www.brasslantern.com
Zsh: http://www.zsh.org | PHPerl Project: http://phperl.sourceforge.net
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