GNU bug report logs - #51606
29.0.50; [PATCH] Show offscreen context with properties

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Message #11 received at 51606 <at> debbugs.gnu.org (full text, mbox):

From: Daniel Martín <mardani29 <at> yahoo.es>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Arash Esbati <arash <at> gnu.org>, 51606 <at> debbugs.gnu.org
Subject: Re: bug#51606: 29.0.50; [PATCH] Show offscreen context with properties
Date: Fri, 05 Nov 2021 13:57:08 +0100

Eli Zaretskii <eliz <at> gnu.org> writes:

>> From: Arash Esbati <arash <at> gnu.org>
>> Date: Fri, 05 Nov 2021 10:40:47 +0100
>> 
>> paren.el now can show the context in minibuffer when
>> `show-paren-context-when-offscreen' is non-nil (introduced in this
>> change 9f505c476e).  Is it possible to extend this that text properties
>> are not stripped?  I'm thinking about something like this:
>
> Why do we remove the properties in the first place?  Daniel, any
> special reasons?

No reason other than being cautious and "follow the traditional behavior
of blink-matching-open".  The code that I extracted from
blink-matching-open to reuse it for show-paren-mode removed the text
properties (see
https://git.savannah.gnu.org/cgit/emacs.git/tree/lisp/simple.el?h=emacs-28#n8608).
If I'm not mistaken, this was apparently introduced in 2005 by Richard
Stallman
(https://git.savannah.gnu.org/cgit/emacs.git/commit/?h=emacs-28&id=1d0e3fc84f058248515f242c0484a0dabfac95aa),
but I don't know the reasons for the change.  Perhaps it didn't look
good on some TTY frames?

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