GNU bug report logs - #402
23.0.60; GTK style font selection interferes with Fontconfig style font selection

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Message #5 received at submit <at> emacsbugs.donarmstrong.com (full text, mbox):

From: James Cloos <cloos <at> jhcloos.com>
To: submit <at> debbugs.gnu.org
Subject: 23.0.60; GTK style font selection interferes with Fontconfig style font selection
Date: Thu, 12 Jun 2008 17:34:26 -0400

Package: GNU Emacs
Version: 23.0.60

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the bug-gnu-emacs <at> gnu.org mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

Last night’s CVS uses the wrong font size when given a resource like:

  emacs.font: DejaVu Sans Mono:pixelsize=14:minspace=true

which is the correct way to specify a fontconfig pattern with a specific
pixelsize.

I presume the GTK vs Fontconfig code assumes there must be a
(name)-(ptsize) sequence in a fontconfig pattern, but ptsize is optional
and is normally absent when specifying a pixelsize.

With the above resource I get a tiny font.  Leaving off the
minspace=true results in a huge font.

I had to used xfd(1x) to figure out the equiv point size (7.4) and
change my Xdefaults to use that for now, but I strongly perfer to
specify an explicit pixelsize for text editors, terminals and other
UI usages, leaving points for documents.

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/usr/share/emacs/23.0.60/etc/DEBUG for instructions.


In GNU Emacs 23.0.60.1 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2008-06-12 on lugabout
Windowing system distributor `The X.Org Foundation', version 11.0.10599001
configured using `configure  '--prefix=/usr' '--host=i686-pc-linux-gnu' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--datadir=/usr/share' '--sysconfdir=/etc' '--localstatedir=/var/lib' '--program-suffix=-emacs-23' '--infodir=/usr/share/info/emacs-23' '--without-carbon' '--with-sound' '--with-x' '--with-toolkit-scroll-bars' '--with-gif' '--with-jpeg' '--with-png' '--with-rsvg' '--with-tiff' '--with-xpm' '--enable-font-backend' '--with-freetype' '--with-xft' '--with-libotf' '--with-m17n-flt' '--with-x-toolkit=athena' '--without-hesiod' '--with-kerberos' '--with-kerberos5' '--with-gpm' '--with-dbus' '--build=i686-pc-linux-gnu' 'build_alias=i686-pc-linux-gnu' 'host_alias=i686-pc-linux-gnu' 'CC=i686-pc-linux-gnu-gcc' 'CFLAGS=-march=pentium3 -O2 -Wno-error' 'LDFLAGS= -Wl,--as-needed ''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: C
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: C
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  show-paren-mode: t
  display-time-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t

Recent input:
M-x r e <tab> p <tab> o <tab> <tab> r <tab> <tab> C-g 
C-h a r e p o r t <return> M-x d e b b <tab> <retu
rn>

Recent messages:
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Message #10 received at 402-close <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Chong Yidong <cyd <at> stupidchicken.com>
To: James Cloos <cloos <at> jhcloos.com>
Cc: "Yuan MEI" <yuan.mei.list <at> gmail.com>, emacs-devel <at> gnu.org,
        402-close <at> debbugs.gnu.org
Subject: Re: Font pixel size selection
Date: Sun, 15 Jun 2008 22:01:36 -0400

James Cloos <cloos <at> jhcloos.com> writes:

> Yuan> I think the only problem here is :pixelsize=14
> Yuan> Fontconfig has the format:
>
> Yuan> <families>-<point sizes>:<name1>=<values1>:<name2>=<values2>
>
> The -<pointsize> part is optional; the comment and the code in font.c
> acknowledge that fact.  But it clearly doesn't work.

I've checked in a fix.  I believe this should work correctly now.

Thanks.

Message #11 received at 402-close <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Kenichi Handa <handa <at> m17n.org>
To: Chong Yidong <cyd <at> stupidchicken.com>
Cc: cloos <at> jhcloos.com, yuan.mei.list <at> gmail.com,
        402-close <at> debbugs.gnu.org, emacs-devel <at> gnu.org
Subject: Re: Font pixel size selection
Date: Mon, 16 Jun 2008 13:13:56 +0900

In article <8763sat9xb.fsf <at> stupidchicken.com>, Chong Yidong <cyd <at> stupidchicken.com> writes:

> James Cloos <cloos <at> jhcloos.com> writes:
> > Yuan> I think the only problem here is :pixelsize=14
> > Yuan> Fontconfig has the format:
> >
> > Yuan> <families>-<point sizes>:<name1>=<values1>:<name2>=<values2>
> >
> > The -<pointsize> part is optional; the comment and the code in font.c
> > acknowledge that fact.  But it clearly doesn't work.

> I've checked in a fix.  I believe this should work correctly now.

Still there's something wrong.  Now ":pixelsize=NN" is
correctly parsed, but the resulting font-spec has peculiar
(almost garbage) :fc-unknown-spec property.

---
Kenichi Handa
handa <at> ni.aist.go.jp

Message #12 received at 402-close <at> emacsbugs.donarmstrong.com (full text, mbox):

From: "İsmail Dönmez" <ismail <at> namtrac.org>
To: "Chong Yidong" <cyd <at> stupidchicken.com>
Cc: "James Cloos" <cloos <at> jhcloos.com>, "Yuan MEI" <yuan.mei.list <at> gmail.com>,
        402-close <at> debbugs.gnu.org, emacs-devel <at> gnu.org
Subject: Re: Font pixel size selection
Date: Mon, 16 Jun 2008 08:18:44 +0300

Hi,

On Mon, Jun 16, 2008 at 5:01 AM, Chong Yidong <cyd <at> stupidchicken.com> wrote:
> James Cloos <cloos <at> jhcloos.com> writes:
>
>> Yuan> I think the only problem here is :pixelsize=14
>> Yuan> Fontconfig has the format:
>>
>> Yuan> <families>-<point sizes>:<name1>=<values1>:<name2>=<values2>
>>
>> The -<pointsize> part is optional; the comment and the code in font.c
>> acknowledge that fact.  But it clearly doesn't work.
>
> I've checked in a fix.  I believe this should work correctly now.

Trunk build is broken now:

font.c: In function 'Ffont_face_attributes':
font.c:3788: error: argument 'frame' doesn't match prototype
font.c:3773: error: prototype declaration

This is with GTK+ frontend on GNU/Linux.

Regards,
ismail


-- 
Never learn by your mistakes, if you do you may never dare to try again.

Message #13 received at 402-close <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Chong Yidong <cyd <at> stupidchicken.com>
To: Kenichi Handa <handa <at> m17n.org>
Cc: cloos <at> jhcloos.com, yuan.mei.list <at> gmail.com,
        402-close <at> debbugs.gnu.org, emacs-devel <at> gnu.org
Subject: Re: Font pixel size selection
Date: Mon, 16 Jun 2008 10:36:04 -0400

Kenichi Handa <handa <at> m17n.org> writes:

>> I've checked in a fix.  I believe this should work correctly now.
>
> Still there's something wrong.  Now ":pixelsize=NN" is
> correctly parsed, but the resulting font-spec has peculiar
> (almost garbage) :fc-unknown-spec property.

This should be fixed now, too.

Message #14 received at 402-close <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Kenichi Handa <handa <at> m17n.org>
To: Chong Yidong <cyd <at> stupidchicken.com>
Cc: cloos <at> jhcloos.com, yuan.mei.list <at> gmail.com,
        402-close <at> debbugs.gnu.org, emacs-devel <at> gnu.org
Subject: Re: Font pixel size selection
Date: Tue, 17 Jun 2008 10:55:08 +0900

In article <87abhl4fcb.fsf <at> stupidchicken.com>, Chong Yidong <cyd <at> stupidchicken.com> writes:

> Kenichi Handa <handa <at> m17n.org> writes:
>>> I've checked in a fix.  I believe this should work correctly now.
> >
> > Still there's something wrong.  Now ":pixelsize=NN" is
> > correctly parsed, but the resulting font-spec has peculiar
> > (almost garbage) :fc-unknown-spec property.

> This should be fixed now, too.

Not yet.

(font-spec :name "mono-10:abc=d:efg") should return
#<font-spec nil nil mono nil nil nil nil nil 10.0 nil nil nil ((:fc-unknown-spec . ":abc=d:efg") (:name . "mono-10:abc=d:efg"))>

but now it returns

#<font-spec nil nil mono nil nil nil nil nil 10.0 nil nil nil ((:fc-unknown-spec . "abc=defg") (:name . "mono-10:abc=d:efg"))>

---
Kenichi Handa
handa <at> ni.aist.go.jp

Message #15 received at 402-close <at> emacsbugs.donarmstrong.com (full text, mbox):

From: James Cloos <cloos <at> jhcloos.com>
To: emacs-devel <at> gnu.org
Cc: Chong Yidong <cyd <at> stupidchicken.com>, yuan.mei.list <at> gmail.com,
        402-close <at> debbugs.gnu.org, Kenichi Handa <handa <at> m17n.org>
Subject: Re: Font pixel size selection
Date: Tue, 17 Jun 2008 00:37:37 -0400

>>>>> "Handa" == Kenichi Handa <handa <at> m17n.org> writes:

>> This should be fixed now, too.

Handa> Not yet.

Handa> (font-spec :name "mono-10:abc=d:efg") [looses the colon]

A good example of where this will show up, other than pixelsize, is a
synthetic bold oblique, such as:

    (font-spec :name "monospace-9:matrix=1 0.2 0 1:embolden=true")

which returns:

    #<font-spec nil nil monospace nil nil nil nil nil 9.0 nil nil nil
        ((:fc-unknown-spec . "matrix=1 0.2 0 1embolden=true") (:name
        . "monospace-9:matrix=1 0.2 0 1:embolden=true"))>

(My compile is from the 14th.)

-JimC
-- 
James Cloos <cloos <at> jhcloos.com>         OpenPGP: 1024D/ED7DAEA6

Message #16 received at 402-close <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Chong Yidong <cyd <at> stupidchicken.com>
To: Kenichi Handa <handa <at> m17n.org>
Cc: cloos <at> jhcloos.com, yuan.mei.list <at> gmail.com,
        402-close <at> debbugs.gnu.org, emacs-devel <at> gnu.org
Subject: Re: Font pixel size selection
Date: Tue, 17 Jun 2008 01:33:39 -0400

Kenichi Handa <handa <at> m17n.org> writes:

> (font-spec :name "mono-10:abc=d:efg") should return
> #<font-spec nil nil mono nil nil nil nil nil 10.0 nil nil nil ((:fc-unknown-spec . ":abc=d:efg") (:name . "mono-10:abc=d:efg"))>
>
> but now it returns
>
> #<font-spec nil nil mono nil nil nil nil nil 10.0 nil nil nil ((:fc-unknown-spec . "abc=defg") (:name . "mono-10:abc=d:efg"))>

Okay, now it returns the former.

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