From: Eli Zaretskii <eliz@gnu.org>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: cyd@stupidchicken.com, emacs-devel@gnu.org
Subject: Re: tabulated-list-init-header and glyphless-char-display
Date: Sun, 10 Apr 2011 01:24:41 -0400 [thread overview]
Message-ID: <E1Q8n8b-0003hN-CF@fencepost.gnu.org> (raw)
In-Reply-To: <jwvei5a69q1.fsf-monnier+emacs@gnu.org> (message from Stefan Monnier on Sun, 10 Apr 2011 00:59:21 -0300)
> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: Eli Zaretskii <eliz@gnu.org>, emacs-devel@gnu.org
> Date: Sun, 10 Apr 2011 00:59:21 -0300
>
> > Thanks. This doesn't quite do what I want, because (i) it applies to
> > the entire buffer, when I only want it to apply to one particular glyph,
> > and (ii) the char table's "fallback display" slot applies to all glyphs
> > with no fonts, when I only want to handle two particular glyphs.
>
> Hmm... so IIUC we distinguish between "glyphless" and "without a font".
> Where do we explain the difference between the two, and is there a good
> reason to distinguish the two cases?
No, "glyphless" and "without a font" are (and should be) synonyms.
Except that on a text terminal, "without a font" means "cannot be
encoded for the current terminal encoding".
> > I propose introducing a `glyphless-char-display-default' text-property,
> > which, if non-nil, overrides glyphless-char-display's "fallback display"
> > slot locally. See attached patch, which seems to do the right thing.
>
> I think problem (i) above is not a real problem, so if we can fix (ii)
> by changing glyphless-char-display we wouldn't need such a text property.
What I had in mind was something much more lightweight: look at these
characters' cells in glyphless-char-display (or use
unencodable-char-position on a tty), and if that indicates that the
characters cannot be displayed, use the surrogates. I see no need for
a more general infrastructure for this case, as it is quite rare.
next prev parent reply other threads:[~2011-04-10 5:24 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-08 17:17 tabulated-list-init-header and glyphless-char-display Eli Zaretskii
2011-04-08 18:27 ` Chong Yidong
2011-04-08 18:47 ` Eli Zaretskii
2011-04-08 18:59 ` Eli Zaretskii
2011-04-09 19:26 ` Chong Yidong
2011-04-10 3:59 ` Stefan Monnier
2011-04-10 5:24 ` Eli Zaretskii [this message]
2011-04-10 15:47 ` Chong Yidong
2011-04-10 16:53 ` Eli Zaretskii
2011-04-10 18:11 ` Chong Yidong
2011-04-11 17:03 ` Eli Zaretskii
2011-04-11 17:31 ` Chong Yidong
2011-04-11 18:04 ` Eli Zaretskii
2011-04-11 18:39 ` Chong Yidong
2011-04-11 19:27 ` Eli Zaretskii
2011-04-11 22:31 ` Chong Yidong
2011-04-12 3:57 ` Stefan Monnier
2011-04-12 4:51 ` Eli Zaretskii
2011-04-12 5:42 ` Kevin Rodgers
2011-04-12 5:58 ` Eli Zaretskii
2011-04-12 16:12 ` Chong Yidong
2011-04-12 16:45 ` Eli Zaretskii
-- strict thread matches above, loose matches on Subject: below --
2011-04-08 17:26 Eli Zaretskii
2011-04-09 10:26 ` Štěpán Němec
2011-04-09 12:12 ` Eli Zaretskii
2011-04-09 13:56 ` Stefan Monnier
2011-04-09 15:37 ` Eli Zaretskii
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