bug#51606: 29.0.50; [PATCH] Show offscreen context with properties

[Eli Zaretskii]

> From: Daniel Martín <mardani29@yahoo.es>
> Cc: Arash Esbati <arash@gnu.org>,  51606@debbugs.gnu.org
> Date: Fri, 05 Nov 2021 13:57:08 +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?

I'd be surprised.

Richard, do you remember why you removed text properties from the
blink-matching-open text it shows in the echo-area?