Your message dated Wed, 23 May 2018 18:22:57 +0900 with message-id <87603eohe6.fsf@gmail.com> and subject line Re: bug#31492: 26.1; query-replace-regexp undo fails in regexps w/o printable chars has caused the debbugs.gnu.org bug report #31492, regarding 26.1; query-replace-regexp undo fails in regexps w/o printable chars to be marked as done. (If you believe you have received this mail in error, please contact help-debbugs@gnu.org.) -- 31492: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=31492 GNU Bug Tracking System Contact help-debbugs@gnu.org with problems