GNU bug report logs - #16721
24.3.50; can not use ext font anymore

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Ivan Kanis <ivan <at> kanis.fr>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3.50; can not use ext font anymore
Date: Tue, 11 Feb 2014 12:04:59 +0100

1) emacs -Q
2) eval the following in *scratch*

(set-fontset-font "fontset-default" nil
  "xft:-unknown-Symbola-normal-normal-semi-condensed-*-20-*-*-*-*-0-iso10646-1")

I expect a return of nil. I get an error "Invalid font name".

On Debian the package ttf-ancient-fonts contains the font.

In GNU Emacs 24.3.50.1 (i686-pc-linux-gnu, GTK+ Version 2.24.20)
 of 2014-02-08 on tao.kanis.fr
Repository revision: 116348 michael.albinus <at> gmx.de-20140208133515-mgy8agwqq4nc6bfb
Windowing system distributor `The X.Org Foundation', version 11.0.11403000
System Description:	Ubuntu 13.10

Configured using:
 `configure --prefix=/home/ivan/emacs-bzr --without-compress-install
 'CFLAGS=-g -DSYSTEM_PURESIZE_EXTRA=1000000''

Important settings:
  value of $LANG: en_US.UTF8
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-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 r e p o r t - b u g <return>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.

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Message #8 received at 16721 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: 16721 <at> debbugs.gnu.org
Cc: Ivan Kanis <ivan <at> kanis.fr>, Kenichi Handa <handa <at> gnu.org>
Subject: Re: bug#16721: 24.3.50; can not use ext font anymore
Date: Tue, 11 Feb 2014 16:27:51 -0500

Ivan Kanis wrote:

> 1) emacs -Q
> 2) eval the following in *scratch*
>
> (set-fontset-font "fontset-default" nil
>   "xft:-unknown-Symbola-normal-normal-semi-condensed-*-20-*-*-*-*-0-iso10646-1")
>
> I expect a return of nil. I get an error "Invalid font name".

This is due to r113049. Perhaps it is working as it should, I don't know.

committer: K. Handa <handa <at> gnu.org>
timestamp: Tue 2013-06-18 23:51:25 +0900
message:
  font.c (Ffont_spec): Signal an error for an invalid font name.


> 'CFLAGS=-g -DSYSTEM_PURESIZE_EXTRA=1000000''

Unrelated, but I would recommend not doing that, unless you have a good
reason to.

Message #11 received at 16721 <at> debbugs.gnu.org (full text, mbox):

From: handa <at> gnu.org (K. Handa)
To: Glenn Morris <rgm <at> gnu.org>
Cc: 16721 <at> debbugs.gnu.org, ivan <at> kanis.fr
Subject: Re: bug#16721: 24.3.50; can not use ext font anymore
Date: Thu, 13 Feb 2014 21:48:41 +0900

In article <6od2ituyp4.fsf <at> fencepost.gnu.org>, Glenn Morris <rgm <at> gnu.org> writes:

> Ivan Kanis wrote:
> > 1) emacs -Q
> > 2) eval the following in *scratch*
> >
> > (set-fontset-font "fontset-default" nil
> >   "xft:-unknown-Symbola-normal-normal-semi-condensed-*-20-*-*-*-*-0-iso10646-1")
> >
> > I expect a return of nil. I get an error "Invalid font name".

> This is due to r113049. Perhaps it is working as it should, I don't know.

A valid XLFD name should have 14 fields separated by "-",
not 15 as the above example.  So, I think signaling "Invalid
font name" error is the right thing.

---
Kenichi Handa
handa <at> gnu.org

Message #14 received at 16721 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: handa <at> gnu.org (K. Handa)
Cc: 16721 <at> debbugs.gnu.org, Glenn Morris <rgm <at> gnu.org>, ivan <at> kanis.fr
Subject: Re: bug#16721: 24.3.50; can not use ext font anymore
Date: Thu, 13 Feb 2014 08:48:05 -0500

> A valid XLFD name should have 14 fields separated by "-",
> not 15 as the above example.  So, I think signaling "Invalid
> font name" error is the right thing.

Agreed.  It would be helpful for the error message to point out why the
font name is invalid, tho.


        Stefan

Message #17 received at 16721 <at> debbugs.gnu.org (full text, mbox):

From: Ivan Kanis <ivan <at> kanis.fr>
To: handa <at> gnu.org (K. Handa)
Cc: 16721 <at> debbugs.gnu.org, Glenn Morris <rgm <at> gnu.org>,
 Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: Re: bug#16721: 24.3.50; can not use ext font anymore
Date: Thu, 13 Feb 2014 16:57:09 +0100

>> A valid XLFD name should have 14 fields separated by "-",
>> not 15 as the above example.  So, I think signaling "Invalid
>> font name" error is the right thing.

Hi Handaさん、

The font

"xft:-unknown-Symbola-normal-normal-semi-condensed-*-20-*-*-*-*-0-iso10646-1"

Is a copy & paste of what emacs 24.3 report after doing a C-u C-x =

It has 15 fields on that version.

On trunk emacs I have tried:

"xft:-Symbola-normal-normal-semi-condensed-*-20-*-*-*-*-0-iso10646-1"

and

"xft:-unknown-Symbola-normal-normal-semi-condensed-*-20-*-*-*-0-iso10646-1"

which contains 14 fields and still get an error.

I don't know anything about this xft stuff. I just had a look at the
emacs info. It talks about using a program called fclist. The output of
that program doesn't tell me what I need to tell emacs to use these fonts.

Take care,

Ivan

-- 
Don't worry; it's been deprecated. The new one is worse.
    -- BOFH excuse #54

I am listening to "Kruder & Dorfmeister - David Holmes - Gone (K&D Session)".

Message #20 received at 16721 <at> debbugs.gnu.org (full text, mbox):

From: Juanma Barranquero <lekktu <at> gmail.com>
To: Ivan Kanis <ivan <at> kanis.fr>
Cc: 16721 <at> debbugs.gnu.org, "K. Handa" <handa <at> gnu.org>
Subject: Re: bug#16721: 24.3.50; can not use ext font anymore
Date: Thu, 13 Feb 2014 17:07:50 +0100

On Thu, Feb 13, 2014 at 4:57 PM, Ivan Kanis <ivan <at> kanis.fr> wrote:

> Is a copy & paste of what emacs 24.3 report after doing a C-u C-x =
>
> It has 15 fields on that version.
>
> On trunk emacs I have tried:
>
> "xft:-Symbola-normal-normal-semi-condensed-*-20-*-*-*-*-0-iso10646-1"

The first item, "xft:", is not part of the font, just saying which
font backend is being used. Please remove it.

Message #23 received at 16721 <at> debbugs.gnu.org (full text, mbox):

From: Ivan Kanis <ivan <at> kanis.fr>
To: Juanma Barranquero <lekktu <at> gmail.com>
Cc: 16721 <at> debbugs.gnu.org, "K. Handa" <handa <at> gnu.org>
Subject: Re: bug#16721: 24.3.50; can not use ext font anymore
Date: Thu, 13 Feb 2014 17:14:45 +0100

Le 13 Février à 17h07, Juanma Barranquero a écrit :

> On Thu, Feb 13, 2014 at 4:57 PM, Ivan Kanis <ivan <at> kanis.fr> wrote:
>
>> Is a copy & paste of what emacs 24.3 report after doing a C-u C-x =
>>
>> It has 15 fields on that version.
>>
>> On trunk emacs I have tried:
>>
>> "xft:-Symbola-normal-normal-semi-condensed-*-20-*-*-*-*-0-iso10646-1"
>
> The first item, "xft:", is not part of the font, just saying which
> font backend is being used. Please remove it.

"-unknown-Symbola-normal-normal-semi-condensed-*-20-*-*-*-0-iso10646-1"

Gives me a Font Error. I count 14 elements.
-- 
Au banquet du bonheur bien peu sont conviés.
    -- Victor Hugo

J'écoute « Kruder & Dorfmeister - Sin - Where Shall I Turn (K&D Session Vol.2) ».

Message #26 received at 16721 <at> debbugs.gnu.org (full text, mbox):

From: Juanma Barranquero <lekktu <at> gmail.com>
To: Ivan Kanis <ivan <at> kanis.fr>
Cc: 16721 <at> debbugs.gnu.org, "K. Handa" <handa <at> gnu.org>
Subject: Re: bug#16721: 24.3.50; can not use ext font anymore
Date: Thu, 13 Feb 2014 17:21:30 +0100

On Thu, Feb 13, 2014 at 5:14 PM, Ivan Kanis <ivan <at> kanis.fr> wrote:

> "-unknown-Symbola-normal-normal-semi-condensed-*-20-*-*-*-0-iso10646-1"

It's weird. "semi-condensed" is one field. For comparison, take a look
at my current font spec (for DejaVu Sans Mono):

-*-DejaVu Sans Mono-normal-r-normal-*-13-*-*-*-c-*-iso8859-1

   J

Message #29 received at 16721 <at> debbugs.gnu.org (full text, mbox):

From: Juanma Barranquero <lekktu <at> gmail.com>
To: Ivan Kanis <ivan <at> kanis.fr>
Cc: 16721 <at> debbugs.gnu.org, "K. Handa" <handa <at> gnu.org>
Subject: Re: bug#16721: 24.3.50; can not use ext font anymore
Date: Thu, 13 Feb 2014 17:23:41 +0100

On Thu, Feb 13, 2014 at 5:21 PM, Juanma Barranquero <lekktu <at> gmail.com> wrote:

> -*-DejaVu Sans Mono-normal-r-normal-*-13-*-*-*-c-*-iso8859-1

Or, in the output of C-u C-x =

uniscribe:-outline-DejaVu Sans
Mono-normal-normal-normal-mono-13-*-*-*-c-*-iso8859-1

where uniscribe:, as above, describes the font backend.

    J

Message #32 received at 16721 <at> debbugs.gnu.org (full text, mbox):

From: Andreas Schwab <schwab <at> suse.de>
To: Ivan Kanis <ivan <at> kanis.fr>
Cc: 16721 <at> debbugs.gnu.org, "K. Handa" <handa <at> gnu.org>
Subject: Re: bug#16721: 24.3.50; can not use ext font anymore
Date: Thu, 13 Feb 2014 17:25:02 +0100

Ivan Kanis <ivan <at> kanis.fr> writes:

> "xft:-unknown-Symbola-normal-normal-semi-condensed-*-20-*-*-*-*-0-iso10646-1"

semi-condensed is bogus.  It should be a single word without a dash.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab <at> suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."

Message #35 received at 16721 <at> debbugs.gnu.org (full text, mbox):

From: Ivan Kanis <ivan <at> kanis.fr>
To: Juanma Barranquero <lekktu <at> gmail.com>
Cc: 16721 <at> debbugs.gnu.org, "K. Handa" <handa <at> gnu.org>
Subject: Re: bug#16721: 24.3.50; can not use ext font anymore
Date: Thu, 13 Feb 2014 17:36:22 +0100

February, 13 at 17:21 Juanma Barranquero wrote:

> On Thu, Feb 13, 2014 at 5:14 PM, Ivan Kanis <ivan <at> kanis.fr> wrote:
>
>> "-unknown-Symbola-normal-normal-semi-condensed-*-20-*-*-*-0-iso10646-1"
>
> It's weird. "semi-condensed" is one field. For comparison, take a look
> at my current font spec (for DejaVu Sans Mono):
>
> -*-DejaVu Sans Mono-normal-r-normal-*-13-*-*-*-c-*-iso8859-1
>
>    J

I got it to work with :

-*-Symbola-*-*-*-*-20-*-*-*-*-*-iso10646-1

C-u C-x = reports

-unknown-Symbola-normal-normal-semicondensed-*-20-*-*-*-*-0-iso10646-1

There is no hyphen in semicondensed. It was a bug in 24.3.

Thanks for the help, I am closing this bug.
-- 
When you can do the common things in life in an uncommon   
way, you will command the attention of the world.
    -- George Washington Carver                                          

I am listening to "Kruder & Dorfmeister - Knowtoryous - Bomberclaad Joint (K+D Session)".

Message #40 received at 16721 <at> debbugs.gnu.org (full text, mbox):

From: handa <at> gnu.org (K. Handa)
To: Ivan Kanis <ivan <at> kanis.fr>
Cc: 16721 <at> debbugs.gnu.org, lekktu <at> gmail.com
Subject: Re: bug#16721: 24.3.50; can not use ext font anymore
Date: Sat, 15 Feb 2014 00:16:48 +0900

In article <87eh37f0qy.fsf <at> tao.kanis.fr>, Ivan Kanis <ivan <at> kanis.fr> writes:

> "-unknown-Symbola-normal-normal-semi-condensed-*-20-*-*-*-0-iso10646-1"

> Gives me a Font Error. I count 14 elements.

Emacs' XLFD parser is stricter than the spec of XLFD.  For
instance, the possible value of SETWIDTH_NAME field (the 5th
one) is one of:
  undefined ultracondensed extracondensed condensed
  semicondensed medium semiexpanded expanded extraexpanded
  ultraexpanded
which are "english translation"s of defined reference value
for RELATIVE_SETWIDTH property.  See:
  http://www.x.org/releases/X11R7.6/doc/xorg-docs/specs/XLFD/xlfd.html#font_properties

So, in the above case, Emacs thinks "semi" is not a valid
SETWIDTH_NAME of a font.

This strictness is to handle a wildcard "*" matching with
multiple fields efficently.  For instance, to find a font
matching with "*-bold-*", Emacs assumes that "bold" is for
WEIGHT_NAME field, and lists fonts whose WEIGHT_NAME field
is "bold".  This is far faster than getting all font names
and check each of them whether it contains "bold" or not.

> The font
> "xft:-unknown-Symbola-normal-normal-semi-condensed-*-20-*-*-*-*-0-iso10646-1"
> Is a copy & paste of what emacs 24.3 report after doing a C-u C-x =

Yes, it's a bug, and should be fixed already.

---
Kenichi Handa
handa <at> gnu.org

Message #43 received at 16721 <at> debbugs.gnu.org (full text, mbox):

From: Ivan Kanis <ivan <at> kanis.fr>
To: handa <at> gnu.org (K. Handa)
Cc: 16721 <at> debbugs.gnu.org, lekktu <at> gmail.com
Subject: Re: bug#16721: 24.3.50; can not use ext font anymore
Date: Fri, 14 Feb 2014 22:58:15 +0100

February, 15 at 0:16 K. Handa wrote:

>> The font
>> "xft:-unknown-Symbola-normal-normal-semi-condensed-*-20-*-*-*-*-0-iso10646-1"
>> Is a copy & paste of what emacs 24.3 report after doing a C-u C-x =
>
> Yes, it's a bug, and should be fixed already.

It is.
-- 
It was OK before you touched it.
    -- BOFH excuse #46

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