Subject: Re: bug#31073: 27.0.50; query-replace undo might change the word case

From: Tino Calancha <[email-masked]>
Date: Sun, 08 Apr 2018 10:14:01 +0900

Juri Linkov <[email-masked]> writes:

>> The undo feature shouldn't change the case; it must return
>> to the original words.
>>
>> emacs -Q
>> <
>> M-% t RET FOO RET SPC SPC SPC SPC U
>> ;; The first line shows upcase 'T' at several positions, for instance
>> ;; it shows 'TexT', originally shown as 'text'.
>
> Good catch!  This means we should have more test coverage.  Thanks.
Eli,

this feature was introduced for Emacs-26 release.  Should the fix go
into that branch (Emacs-26)?