this is from upstream. described by:

and fixed by:

--- tcsh-6.19.00/tw.comp.c.orig Wed Feb 3 14:07:50 2016

+++ tcsh-6.19.00/tw.comp.c Wed Feb 3 14:08:18 2016

@@ -251,7 +251,7 @@

tw_match(const Char *str, const Char *pat, int exact)

{

const Char *estr;

- int rv = exact ? Gmatch(str, pat) : Gnmatch(str, pat, &estr);

+ int rv = exact ? Gmatch(estr = str, pat) : Gnmatch(str, pat, &estr);

#ifdef TDEBUG

xprintf("G%smatch(%s, ", exact ? "" : "n", short2str(str));

xprintf("%s, ", short2str(pat));