GNU bug report logs - #27896
25.2; `C-M-%' with `rectangle-mark-mode'

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Message #26 received at 27896 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Juri Linkov <juri <at> linkov.net>
Cc: "27896 <at> debbugs.gnu.org" <27896 <at> debbugs.gnu.org>,
 Drew Adams <drew.adams <at> oracle.com>
Subject: Re: [External] : Re: bug#27896: 25.2; `C-M-%' with
 `rectangle-mark-mode'
Date: Tue, 09 Feb 2021 09:09:51 +0100

Juri Linkov <juri <at> linkov.net> writes:

>> But we could somewhat easily change `C-M-%' to be slightly less
>> surprising, and document its limitations.  That is, we say that no
>> multi-line matches are impossible in rectangle mode, and we implement it
>
> The current limitation is inability to use some greedy
> regexps in rectangle mode.  This is not much worse than
> limiting query-replace to non-multi-line matches only.

Aren't multi-line replacements already disallowed in rectangle mode by
the filtering function?

>> by just narrowing to each successive line part, and executing the
>> query-replace-regexp once per line.  (With some magic to handle `!' etc,
>> I guess.)
>
> Actually not narrowing in the sense of narrow-to-region,
> but temporarily setting the LIMIT arg of 'replace-search'
> to the end of the region of the current line.

Yup.

But I guess it's not that easy to get this to work sensibly -- it'd only
highlight matches in one line at a time, which would be odd.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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