GNU bug report logs - #55234
28.1; replace-string in rectangle regio

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From: Juri Linkov <juri <at> linkov.net>
To: Michael Heerdegen <michael_heerdegen <at> web.de>
Cc: Paulo Sousa <de.sousa.paulus <at> gmail.com>, 55234 <at> debbugs.gnu.org
Subject: bug#55234: 28.1; replace-string in rectangle regio
Date: Thu, 02 Jun 2022 20:23:24 +0300

>> > BTW, my solution to the original problem: I implemented a command
>> > that lets me edit a rectangular region in a separate buffer (similar to
>> > `string-edit').
>>
>> Isn't this a workaround?
>
> A different approach.  Why I did this is: first, it's sometimes nice to
> have a separate buffer that is like the buffer "narrowed to the
> rectangular region".  Second, depending on the text structure, in some
> cases the end result should be a proper rectangle again, or even a
> rectangle of exactly the same dimensions.  But when you query replace,
> rectangle lines may become different lengths, some may be empty, some
> even longer than before etc.  My commands asks me what to do in such a
> situation.

Does this approach have more side-effects?  It seems e.g. the undo history
of replacements is not maintained: when copied back from the temporary buffer
to the original buffer, the undo command will undo the whole rectangular region,
not each replacement?

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