From: Robert Pluim <rpluim@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: greselin.andrea@gmail.com, 39082@debbugs.gnu.org
Subject: bug#39082: Inconsolata v3.000 has too wide spacing
Date: Mon, 13 Jan 2020 18:03:37 +0100 [thread overview]
Message-ID: <m2k15vthjq.fsf@gmail.com> (raw)
In-Reply-To: <m2o8v7tihp.fsf@gmail.com> (Robert Pluim's message of "Mon, 13 Jan 2020 17:43:14 +0100")
>>>>> On Mon, 13 Jan 2020 17:43:14 +0100, Robert Pluim <rpluim@gmail.com> said:
>>>>> On Mon, 13 Jan 2020 18:18:50 +0200, Eli Zaretskii <eliz@gnu.org> said:
>>> From: Robert Pluim <rpluim@gmail.com>
>>> Cc: Andrea Greselin <greselin.andrea@gmail.com>, 39082@debbugs.gnu.org
>>> Date: Mon, 13 Jan 2020 10:27:32 +0100
>>>
Eli> So the question now becomes how come we get such a large value. Looks
Eli> like we somehow use the space-width value instead of the character
Eli> glyph's width, not sure why. I guess stepping through the code I've
Eli> shown from xdisp.c is still necessary to understand this.
>>>
>>> I can reproduce this, but I donʼt know how much effort we should spend
>>> getting to the bottom of it: a Cairo-enabled build (ie !XFT) does not
>>> have this problem.
Eli> So I guess this is some kind of Xft bug? In that case, I think it
Eli> would be enough to describe the Cairo workaround in etc/PROBLEMS, and
Eli> close the bug with that.
Robert> Itʼs either a bug or a limitation in the Xft interface. I see the
Robert> width of characters coming back from XftGlyphExtents as 26, with all
Robert> the other metrics as 0, so I donʼt think thereʼs much we can do.
How about the following (assuming the Inconsolata or libXft devs donʼt
come up with an alternative API we can call).
** Under X, some characters are unexpectedly wide.
e.g. recent versions of Inconsolata show this issue for almost all of
its characters. Due to either a limitation in the Xft interface used
by Emacs, or an Xft bug, the determination of the width of some
characters is incorrect. Emacs built with Cairo enabled ("configure
--with-cairo") and the appropriate cairo development packages
installed does not have this issue. See
<https://github.com/googlefonts/Inconsolata/issues/42> and
<https://lists.gnu.org/archive/html/bug-gnu-emacs/2020-01/msg00456.html>
for more discussion.
next prev parent reply other threads:[~2020-01-13 17:03 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-11 10:03 bug#39082: Inconsolata v3.000 has too wide spacing Andrea Greselin
2020-01-12 15:37 ` Eli Zaretskii
2020-01-12 16:56 ` Eli Zaretskii
2020-01-12 17:52 ` Eli Zaretskii
2020-01-12 18:17 ` Andrea Greselin
2020-01-12 18:44 ` Eli Zaretskii
2020-01-13 9:27 ` Robert Pluim
2020-01-13 16:18 ` Eli Zaretskii
2020-01-13 16:43 ` Robert Pluim
2020-01-13 16:56 ` Andrea Greselin
2020-01-13 17:03 ` Robert Pluim [this message]
2020-01-13 17:26 ` Eli Zaretskii
2020-01-14 9:52 ` Robert Pluim
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