GNU bug report logs - #13399
24.3.50; Word-wrap can't wrap at zero-width space U-200B

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Message #65 received at 13399 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: rudalics <at> gmx.at, 13399 <at> debbugs.gnu.org
Subject: Re: bug#13399: 24.3.50;
	Word-wrap can't wrap at zero-width space U-200B
Date: Sat, 12 Jan 2013 08:20:50 -0500

> But why would we need that?  Most everything we need to know about
> display is already tracked by the display iterator, so available even
> without generating glyphs, and that's what the move_it_* functions do.
> These function do their job by traversing only small portions of the
> buffer, just large enough for the job at hand to be done.

What about posn-at-point?

> OTOH, updating the entire glyph matrices of all of the windows on all
> of the frames AFAIR takes the lion's share of time used by redisplay,
> so we might as well force a complete redisplay when we do need
> complete up-to-date matrices.

posn-at-point doesn't need to refresh all glyph matrices, only the one
of the selected window.


        Stefan

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