GNU bug report logs - #44664
28.0.50; troubles with some chars in term

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Package: emacs;

Reported by: Jean Louis <bugs <at> gnu.support>

Date: Sun, 15 Nov 2020 19:46:01 UTC

Severity: minor

Tags: confirmed

Merged with 6718, 36983

Found in versions 23.2, 25.3, 27.0.50, 28.0.50

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: schwab <at> linux-m68k.org, bugs <at> gnu.support, 44664 <at> debbugs.gnu.org
Subject: bug#44664: 28.0.50; troubles with some chars in term
Date: Thu, 26 Nov 2020 16:17:09 +0200
> From: Lars Ingebrigtsen <larsi <at> gnus.org>
> Cc: schwab <at> linux-m68k.org,  bugs <at> gnu.support,  44664 <at> debbugs.gnu.org
> Date: Thu, 26 Nov 2020 10:50:57 +0100
> 
> Eli Zaretskii <eliz <at> gnu.org> writes:
> 
> > Maybe.  We can do that as well, btw.  We already do something like
> > that with fonts that declare too large height for its character
> > glyphs: we override that with a reasonable value.  We could do
> > something similar for the width, conditioned on some buffer-local
> > variable.  The relative complexity of this wrt what terminal emulators
> > do is that terminal emulators can do that always, whereas Emacs cannot
> > do that by default, it must be an opt-in feature requested by the
> > likes of term.el.
> 
> Yes.
> 
> Hm...  actually, that sounds like a pretty good feature in general for
> all modes that expect columnar output, doesn't it?

Any feature that displays text in a tabular form, or otherwise needs
arbitrary text to align, yes.

> That is, being able to snap all glyphs to an integer multiple of the
> standard character width?  That is, add padding if the width is more
> than 0.5 wider than the standard width and narrow the glyph if it's
> less?  (Whether to only narrow could also be an option.)

I think ideally we should make each character as wide as char-width
says it should be, because a well-behaved text-mode application is
supposed to arrange text according to that.  It should be easy to do
that, but I'm afraid we will bump into characters whose char-width is
1, but which are much wider on display.  I don't know what to do in
that case.




This bug report was last modified 3 years and 131 days ago.

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