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bug#31492: 26.1; query-replace-regexp undo fails in regexps w/o printabl


From: Tino Calancha
Subject: bug#31492: 26.1; query-replace-regexp undo fails in regexps w/o printable chars
Date: Fri, 18 May 2018 23:22:13 +0900 (JST)
User-agent: Alpine 2.20 (DEB 67 2015-01-07)



On Fri, 18 May 2018, Eli Zaretskii wrote:

From: Tino Calancha <address@hidden>
Date: Fri, 18 May 2018 22:27:36 +0900

emacs -Q

< C-M-% \b RET foo RET TAB TAB TAB
U ; undo all replacements
;; Nothing is undid :-(

I'm probably missing something, because I cannot reproduce the problem
I guess the explanation is in what does "<" mean and, more
'<' stands for `beginning-of-buffer'. Then you have text to replace in the *scratch* buffer. Otherwise you at the end of the buffer and my
regexp cannot match.





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