From: Oleh Krehel <ohwoeowho@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: clement.pitclaudel@live.com, 20628@debbugs.gnu.org
Subject: bug#20628: 25.0.50; Incorrect line height for some fonts
Date: Fri, 22 May 2015 18:33:43 +0200 [thread overview]
Message-ID: <87twv44lnc.fsf@gmail.com> (raw)
In-Reply-To: <83d21s4lpx.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 22 May 2015 19:32:10 +0300")
Eli Zaretskii <eliz@gnu.org> writes:
>> From: Oleh Krehel <ohwoeowho@gmail.com>
>> Cc: clement.pitclaudel@live.com, 20628@debbugs.gnu.org
>> Date: Fri, 22 May 2015 18:15:28 +0200
>>
>> >> So far I've tracked the bug to xftfont_open, where instead of the
>> >> usual
>> >>
>> >> font ascent: 14, descent: 5
>> >>
>> >> I get for the 120755 char:
>> >>
>> >> font ascent: 54, descent: 46
>
> According to what I see here 120755 (#x1d7b3) is the same kappa symbol
> as #x1d779, just in italic form. Not sure why Emacs on your system
> displays the former when you request the latter, but at least it's the
> same letter. Perhaps the font driver substitutes one for the other?
Could be. I don't mind that really, just the ascent/descent.
>> > How is this strange character displayed, eventually? Is it displayed
>> > as a character or as a box with its hex code?
>>
>> It's displayed just the way gedit displays it, only with a huge (3 line
>> height) ascent and a huge (3 line height) descent. So the line with the
>> char is effectively 7 times taller than a regular line.
>>
>> Also, I've tracked the font family of the char to be "Latin Modern
>> Mathfont" in xftfont_open.
>
> Math fonts are notorious for requesting huge ascent and descent
> values. I always disable them using fontsets.
Can you explain what are fontsets and how to use the to disable
ascent/descent in math? Is it possible for Emacs to do so by default?
In any case, here's more data for the bad font that gets created with
XftFontOpenPattern.
Family:
$ p (FcChar8 *) SDATA (SYMBOL_NAME (val))
"Latin Modern Math"
Foundry:
$ p (FcChar8 *) SDATA (SYMBOL_NAME (val))
"unknown"
Filename:
$ p (FcChar8 *) SDATA (filename)
"/usr/share/texmf/fonts/opentype/public/lm-math/latinmodernmath-regular.otf"
So it might be that I could just patch latinmodernmath-regular.otf to
fix the problem. Or maybe Emacs could fix the problem specifically for
this file / font family. That's what gedit does, I guess.
next prev parent reply other threads:[~2015-05-22 16:33 UTC|newest]
Thread overview: 114+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-22 3:02 bug#20628: 25.0.50; Incorrect line height for some fonts Clément Pit--Claudel
2015-05-22 7:32 ` Eli Zaretskii
2015-05-22 10:11 ` Oleh Krehel
2015-05-22 12:26 ` Eli Zaretskii
2015-05-22 12:49 ` Oleh Krehel
2015-05-22 13:13 ` Eli Zaretskii
2015-05-22 13:18 ` Eli Zaretskii
2015-05-22 13:03 ` Eli Zaretskii
2015-05-22 13:15 ` Oleh Krehel
2015-05-22 13:55 ` Eli Zaretskii
2015-05-22 13:54 ` Oleh Krehel
2015-05-22 14:07 ` Eli Zaretskii
2015-05-22 14:20 ` Oleh Krehel
2015-05-22 14:49 ` Eli Zaretskii
2015-05-22 15:03 ` Oleh Krehel
2015-05-22 15:39 ` Eli Zaretskii
2015-05-22 16:05 ` Oleh Krehel
2015-05-22 16:14 ` Eli Zaretskii
2015-05-22 16:15 ` Oleh Krehel
2015-05-22 16:32 ` Eli Zaretskii
2015-05-22 16:33 ` Oleh Krehel [this message]
2015-05-22 16:54 ` Oleh Krehel
2015-05-22 17:15 ` Andreas Schwab
2015-05-22 17:40 ` Oleh Krehel
2015-05-22 18:18 ` Eli Zaretskii
2015-05-22 18:18 ` Oleh Krehel
2015-05-22 18:43 ` Eli Zaretskii
2015-05-22 18:53 ` Oleh Krehel
2015-05-22 19:05 ` Clément Pit--Claudel
2015-05-22 19:27 ` Eli Zaretskii
2015-05-22 19:09 ` Clément Pit--Claudel
2015-05-22 19:37 ` Eli Zaretskii
2015-05-22 20:08 ` Oleh Krehel
2015-05-22 22:43 ` Stefan Monnier
2015-05-22 23:55 ` Clément Pit--Claudel
2015-05-23 7:24 ` Eli Zaretskii
2015-05-24 8:20 ` Clément Pit--Claudel
2015-05-24 9:36 ` Eli Zaretskii
2015-05-23 7:20 ` Eli Zaretskii
2015-05-23 13:27 ` Stefan Monnier
2015-05-23 13:54 ` Eli Zaretskii
2015-05-23 7:10 ` Eli Zaretskii
2015-05-23 7:47 ` YAMAMOTO Mitsuharu
2015-05-23 8:26 ` Eli Zaretskii
2015-05-23 9:56 ` Oleh Krehel
2015-05-23 10:21 ` Eli Zaretskii
2015-05-23 10:56 ` Oleh Krehel
2015-05-25 10:32 ` Rasmus
2015-05-25 13:24 ` Drew Adams
2015-05-25 14:39 ` Eli Zaretskii
2015-05-22 18:15 ` Eli Zaretskii
2015-05-22 18:57 ` Clément Pit--Claudel
2015-05-22 19:15 ` Eli Zaretskii
2015-05-22 21:49 ` Werner LEMBERG
2015-05-23 6:52 ` Eli Zaretskii
2015-05-23 9:50 ` Werner LEMBERG
2015-05-23 9:57 ` Werner LEMBERG
2015-05-23 10:31 ` Eli Zaretskii
2015-05-23 11:45 ` Werner LEMBERG
2015-05-24 8:20 ` Clément Pit--Claudel
2015-05-24 9:29 ` Eli Zaretskii
2015-05-24 9:32 ` Werner LEMBERG
2015-05-24 9:48 ` Eli Zaretskii
2015-05-24 10:06 ` Eli Zaretskii
2015-05-24 10:29 ` Eli Zaretskii
2015-05-27 15:20 ` Eli Zaretskii
2015-05-29 8:20 ` Eli Zaretskii
2015-05-29 8:35 ` Clément Pit--Claudel
2015-05-29 9:30 ` Oleh Krehel
2015-05-29 10:23 ` Eli Zaretskii
2015-05-29 10:38 ` Oleh Krehel
2015-05-29 14:49 ` Stefan Monnier
2015-05-29 14:49 ` Oleh Krehel
2015-05-29 18:17 ` Eli Zaretskii
2015-05-29 13:15 ` Eli Zaretskii
2015-05-29 13:16 ` Oleh Krehel
2015-05-29 18:18 ` Eli Zaretskii
2015-05-30 9:40 ` Eli Zaretskii
2015-05-30 5:21 ` Clément Pit--Claudel
2015-05-30 9:42 ` Eli Zaretskii
2015-05-30 13:00 ` Oleh Krehel
2015-05-30 14:20 ` Eli Zaretskii
2015-05-30 14:32 ` Oleh Krehel
2015-05-30 16:28 ` Eli Zaretskii
2015-05-30 16:59 ` Oleh Krehel
2015-05-30 18:35 ` Eli Zaretskii
2015-05-30 18:57 ` Oleh Krehel
2015-05-30 19:23 ` Eli Zaretskii
2015-05-30 19:26 ` Oleh Krehel
2015-05-30 19:52 ` Eli Zaretskii
2015-05-31 14:48 ` Eli Zaretskii
2015-06-01 10:54 ` Oleh Krehel
2015-06-01 14:49 ` Eli Zaretskii
2015-06-06 13:14 ` Eli Zaretskii
2015-05-30 18:58 ` Clément Pit--Claudel
2015-05-30 19:25 ` Eli Zaretskii
2015-06-03 9:44 ` Werner LEMBERG
2015-06-03 14:53 ` Eli Zaretskii
2015-05-22 19:03 ` Clément Pit--Claudel
2015-05-22 19:35 ` Eli Zaretskii
2015-05-22 20:25 ` Clément Pit--Claudel
2015-05-23 7:12 ` Eli Zaretskii
2015-05-24 8:20 ` Clément Pit--Claudel
2015-05-24 9:31 ` Eli Zaretskii
2015-05-23 8:19 ` Eli Zaretskii
2015-05-22 15:41 ` Andreas Schwab
2015-05-22 15:05 ` Eli Zaretskii
2015-05-22 15:27 ` Stefan Monnier
2015-05-22 15:42 ` Eli Zaretskii
2015-05-22 13:21 ` Andreas Schwab
2015-05-24 8:20 ` Clément Pit--Claudel
2015-05-24 9:32 ` Eli Zaretskii
2015-05-22 15:16 ` Rasmus
[not found] <<555E9C2E.8040008@live.com>
[not found] ` <<83wq004x2w.fsf@gnu.org>
[not found] ` <<83twv44vd3.fsf@gnu.org>
[not found] ` <<87egm87ny6.fsf@gmail.com>
[not found] ` <<83oalc4syu.fsf@gnu.org>
[not found] ` <<87617k7m5u.fsf@gmail.com>
[not found] ` <<83mw0w4seb.fsf@gnu.org>
[not found] ` <<87zj4w66ds.fsf@gmail.com>
[not found] ` <<83lhgg4qhf.fsf@gnu.org>
[not found] ` <<87iobk64e6.fsf@gmail.com>
[not found] ` <<83h9r44o63.fsf@gnu.org>
[not found] ` <<87pp5sy4vu.fsf@gmail.com>
[not found] ` <<83egm84mj3.fsf@gnu.org>
[not found] ` <<87617k6127.fsf@gmail.com>
[not found] ` <<83d21s4lpx.fsf@gnu.org>
[not found] ` <<87twv44lnc.fsf@gmail.com>
[not found] ` <<87egm84kp2.fsf@gmail.com>
[not found] ` <<83a8ww4grx.fsf@gnu.org>
[not found] ` <<87382oml31.fsf@gmail.com>
[not found] ` <<83k2vz3h2p.fsf@gnu.org>
[not found] ` <<wlpp5rivkj.wl%mituharu@math.s.chiba-u.ac.jp>
[not found] ` <<87oal954mc.fsf@gmx.us>
[not found] ` <<b054a996-dd2e-4436-80f2-93cc5b2d1cb9@default>
[not found] ` <<83oal8zpp8.fsf@gnu.org>
2015-05-25 15:39 ` Drew Adams
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