From: Ilya Zakharevich <ilya@math.berkeley.edu>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 19993@debbugs.gnu.org
Subject: bug#19993: 25.0.50; Unicode fonts defective on Windows
Date: Sun, 8 Mar 2015 00:38:05 -0800 [thread overview]
Message-ID: <20150308083805.GA1763@math.berkeley.edu> (raw)
In-Reply-To: <83k2ytmd9q.fsf@gnu.org>
On Sat, Mar 07, 2015 at 10:18:25AM +0200, Eli Zaretskii wrote:
> > > (set-fontset-font "fontset-default" '(#x1d400 . #x1d7ff) "Symbola")
> >
> > I do not follow. What is going on now? Are you saying that it should
> > NOT work out-of-the-box?
>
> On the slim chance that you'd like this to work for you, and didn't
> yet figure it out, I described what worked for me.
It would be nice if there was a recipe which works for everyone.
(After this, one could make it a default. ;-)
But the major hurdle is that the semantic of fontsets is completely
undocumented. After your suggestions, I think I arrived at some
description which does not contradict anything I have seen:
=======================================================
When Emacs wants to show a character using a fontset:
• Emacs looks in the fontset and finds the font specifications associated
to this character.
• Emacs checks which Unicode Subset contains the given character.
(What if not unique???)
• From fonts matching the font specifications, Emacs picks up those
which have this Unicode Subset “identified” within the font.
• From these, Emacs choses one (which?).
Emacs uses this procedure for two fontsets: the currently enabled one, and
the default fontset. If none of two obtained fonts supports the given
character, a HEX representation is shown.
=======================================================
Is it similar to what actually happens? (I’m not asking about the
implementation, just whether there is a functional equivalence.)
Ilya
next prev parent reply other threads:[~2015-03-08 8:38 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-03 22:02 bug#19993: 25.0.50; Unicode fonts defective on Windows Ilya Zakharevich
2015-03-04 17:59 ` Eli Zaretskii
2015-03-05 21:49 ` Ilya Zakharevich
2015-03-05 22:05 ` Ilya Zakharevich
2015-03-06 10:45 ` Eli Zaretskii
2015-03-06 11:38 ` Ilya Zakharevich
2015-03-06 14:00 ` Eli Zaretskii
2015-03-06 16:21 ` Ilya Zakharevich
2015-03-06 20:11 ` Eli Zaretskii
2015-03-06 21:12 ` Eli Zaretskii
2015-03-06 22:13 ` Ilya Zakharevich
2015-03-07 8:18 ` Eli Zaretskii
2015-03-08 7:45 ` Ilya Zakharevich
2015-03-08 15:52 ` Eli Zaretskii
2015-03-08 8:38 ` Ilya Zakharevich [this message]
2015-03-08 8:46 ` Ilya Zakharevich
2015-03-10 16:29 ` Ilya Zakharevich
2015-03-10 17:05 ` Eli Zaretskii
2015-03-10 17:41 ` Eli Zaretskii
2015-03-10 20:32 ` Ilya Zakharevich
2015-03-11 4:28 ` Eli Zaretskii
2015-03-11 19:49 ` Ilya Zakharevich
2015-03-11 20:21 ` Eli Zaretskii
2015-03-12 18:16 ` Eli Zaretskii
2015-03-13 1:52 ` Ilya Zakharevich
2015-03-13 7:34 ` Eli Zaretskii
2015-03-13 4:50 ` Ilya Zakharevich
2015-03-13 6:16 ` Eli Zaretskii
2015-03-08 15:55 ` Eli Zaretskii
2015-03-06 22:08 ` Ilya Zakharevich
2015-03-07 8:14 ` Eli Zaretskii
2015-03-08 7:41 ` Ilya Zakharevich
2015-03-08 15:51 ` Eli Zaretskii
2015-03-08 16:20 ` Ilya Zakharevich
2015-03-08 17:01 ` Eli Zaretskii
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