Your bug report

#21688: 25.0.50; segfault in regex.c triggered by an isearch

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 21802@debbugs.gnu.org.

-- 
21688: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=21688
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