From: Chong Yidong <cyd@stupidchicken.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: monnier@iro.umontreal.ca, emacs-devel@gnu.org
Subject: Re: tabulated-list-init-header and glyphless-char-display
Date: Sun, 10 Apr 2011 14:11:31 -0400 [thread overview]
Message-ID: <87mxjyht7w.fsf@stupidchicken.com> (raw)
In-Reply-To: <83hba6rqtm.fsf@gnu.org> (Eli Zaretskii's message of "Sun, 10 Apr 2011 19:53:09 +0300")
Eli Zaretskii <eliz@gnu.org> writes:
>> For instance, if you do (aset glyphless-char-display ?a 'empty-box),
>> that tells Emacs that "a" is a glyphless character, and causes all
>> "a"'s to be displayed as empty boxes.
>
> That's right, but why would you do something like that with a
> characters that is perfectly displayable? You should only do that
> with characters that cannot be displayed, like unencodable characters
> on a tty. That's what I was trying to convey; sorry if I failed to
> get that across.
I think what you have in mind (correct me if I'm wrong) is to do some
kind of terminal detection, and then conditionally set up the
glyphless-char-display char table in the tabulated-list buffer. That
solution is not satisfactory, because it won't work in the multi-tty
case. The same buffer might be simultaneously displayed on a text
terminal and on X, and we want the X display to work properly.
The correct fix is to provide some way to say "in the no-font case,
display this character in this way". There's currently no multi-tty
compatible way to do this for one specific character.
An alternative to my earlier text-property-based proposal is to extend
glyphless-char-display's extra slot, so that in addition to the symbols
`hex-code' and `empty-box', it can hold yet another char table for
resolving the display of individual fontless characters.
However, this has the undesireable (though minor) side-effect of
changing display in the main part of the buffer, so I still prefer the
text-property-based solution.
next prev parent reply other threads:[~2011-04-10 18:11 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
2011-04-10 15:47 ` Chong Yidong
2011-04-10 16:53 ` Eli Zaretskii
2011-04-10 18:11 ` Chong Yidong [this message]
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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