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Re: Tick Reduction

From: Eli Zaretskii
Subject: Re: Tick Reduction
Date: Mon, 29 Nov 2021 15:53:23 +0200

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: dgutov@yandex.ru,  stefankangas@gmail.com,  emacs-devel@gnu.org
> Date: Mon, 29 Nov 2021 14:40:26 +0100
> Eli Zaretskii <eliz@gnu.org> writes:
> > How would you know where to call it?  When display_string produces the
> > glyphs for the result of "%p", all it sees is a C string like "26%".
> > I don't see how it could reach out to the original mode-line spec.
> > the above code runs only _after_ display_string returns.
> Yes, it'd have to call the `display' machinery before doing the C
> string, I think?

That's crazy (forgive my French).  It is much cleaner to produce a
Lisp string with the result of %p (or whatever), with the 'display'
property on it, and use that in the mode line instead.

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