GNU bug report logs - #2334
23.0.90; emacs-snapshot has ugly fonts when using set-default-font elisp function

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From: help-debbugs <at> gnu.org (Emacs bug Tracking System)
To: "Theodore Ts'o" <tytso <at> mit.edu>
Subject: bug#2334 closed by Chong Yidong <cyd <at> stupidchicken.com> (Re: 
 23.0.90; emacs-snapshot has ugly fonts when using set-default-font elisp 
 function)
Date: Thu, 19 Feb 2009 03:25:04 +0000

[Message part 1 (text/plain, inline)]

This is an automatic notification regarding your bug report
which was filed against the emacs package:

#2334: 23.0.90; emacs-snapshot has ugly fonts when using set-default-font elisp function

It has been closed by Chong Yidong <cyd <at> stupidchicken.com>.

Their explanation is attached below along with your original report.
If this explanation is unsatisfactory and you have not received a
better one in a separate message then please contact Chong Yidong <cyd <at> stupidchicken.com> by
replying to this email.


-- 
2334: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=2334
Emacs Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Chong Yidong <cyd <at> stupidchicken.com>
To: Kenichi Handa <handa <at> m17n.org>
Cc: tytso <at> mit.edu, 2334-done <at> debbugs.gnu.org
Subject: Re: 23.0.90; emacs-snapshot has ugly fonts when using set-default-font elisp function
Date: Wed, 18 Feb 2009 22:18:11 -0500

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

> I at first want to figure out why the above two methods for
> seting a font are different.  At least, I can't reproduce
> the difference.  Can you?  When I have "dejavu sans mono"
> fonts both for fontconfig and X as below, both methods set
> the default font to X font.

If the frame is already using an XFT font, doing

 (set-face-attribute 'default (selected-frame)
                     :font "DejaVu Sans Mono 10")

will give an XFT (anti-aliased) version of DejaVu Sans Mono.  If the
frame is using an X font, the same code gives the X version of DejaVu
Sans Mono.

Doing

  (modify-frame-parameters (selected-frame)
     (list (cons 'font "DejaVu Sans Mono 10")))

always returns the X version.  This discrepancy is due to the use of
font_open_by_name instead of font_load_for_lface.

I don't think there is anything that need to be corrected, apart from
giving the XFT driver a higher priority; I've just done that.

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From: "Theodore Ts'o" <tytso <at> mit.edu>
To: emacs-pretest-bug <at> gnu.org
Subject: 23.0.90; emacs-snapshot has ugly fonts when using set-default-font elisp function
Date: Sun, 15 Feb 2009 00:32:28 -0500

Using emacs-snapshot-20090207, the text display becomes very ugly when
set via:

(set-default-font "DejaVu Sans Mono-10")

However, if the font is set via the menu bar: Options->Set Default Font

then the fonts look good (i.e., with proper anti-aliasing).



In GNU Emacs 23.0.90.1 (i486-pc-linux-gnu, GTK+ Version 2.14.4)
 of 2009-02-10 on iridium, modified by Debian
 (emacs-snapshot package, version 1:20090207-1~intrepid1)
Windowing system distributor `The X.Org Foundation', version 11.0.10502000
configured using `configure  '--build' 'i486-linux-gnu' '--host' 'i486-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib' '--localstatedir=/var' '--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-pop=yes' '--enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/23.0.90/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.0.90/site-lisp:/usr/share/emacs/site-lisp' '--with-x=yes' '--with-x-toolkit=gtk' 'build_alias=i486-linux-gnu' 'host_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN -DSITELOAD_PURESIZE_EXTRA=5000 -g -O2' 'LDFLAGS=-g -Wl,--as-needed' 'CPPFLAGS=''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  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:
  display-time-mode: t
  tooltip-mode: t
  tool-bar-mode: t
  mouse-wheel-mode: t
  menu-bar-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
  line-number-mode: t
  transient-mark-mode: t

Recent input:
M-x s e t - f SPC a SPC s SPC <tab> <tab> <return> 
C-g <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <menu-bar> 
<options> <menu-set-font> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <menu-bar> <options> <menu-set-font> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <right> M-x r e p o SPC SPC r SPC SPC SPC 
<return> C-g C-x C-f C-g M-x r e p o r SPC SPC SPC 
<return>

Recent messages:
Skipping dictionaries-common setup for emacs-snapshot
Loading /etc/emacs/site-start.d/50dictionaries-common.el (source)...done
Loading /etc/emacs/site-start.d/50psvn.el (source)...done
Loading /home/tytso/.emacs.custom...done
For information about GNU Emacs and the GNU system, type C-h C-a.
Making completion list...
Quit [2 times]
call-interactively: End of buffer
Making completion list... [2 times]
Quit
Quit

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