* bug#23934: 25.1.50; Incorrect rendering of cyrillic text on OS X
@ 2016-07-10 15:45 Alan Third
2016-07-10 16:04 ` Eli Zaretskii
2016-07-11 4:44 ` YAMAMOTO Mitsuharu
0 siblings, 2 replies; 7+ messages in thread
From: Alan Third @ 2016-07-10 15:45 UTC (permalink / raw
To: 23934
[-- Attachment #1: Type: text/plain, Size: 194 bytes --]
When using the font "Menlo" Emacs displays the cyrillic text in the
hello file incorrectly. "Monaco" works fine. This affects both Mac and
NS ports.
Emacs -Q -fn Monaco
C-h h C-s russian RET
[-- Attachment #2: Russian text in Monaco --]
[-- Type: image/png, Size: 9949 bytes --]
[-- Attachment #3: Type: text/plain, Size: 44 bytes --]
Emacs -Q -fn Menlo
C-h h C-s russian RET
[-- Attachment #4: menlo.png --]
[-- Type: Russian text in Menlo, Size: 9108 bytes --]
[-- Attachment #5: Type: text/plain, Size: 5669 bytes --]
It appears that two characters are being drawn in the same space.
In GNU Emacs 25.1.50.1 (x86_64-apple-darwin15.5.0, NS appkit-1404.47 Version 10.11.5 (Build 15F34))
of 2016-07-10 built on breton.holly.idiocy.org
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--
Alan Third
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#23934: 25.1.50; Incorrect rendering of cyrillic text on OS X
2016-07-10 15:45 bug#23934: 25.1.50; Incorrect rendering of cyrillic text on OS X Alan Third
@ 2016-07-10 16:04 ` Eli Zaretskii
2016-07-10 16:28 ` Alan Third
2016-07-11 4:44 ` YAMAMOTO Mitsuharu
1 sibling, 1 reply; 7+ messages in thread
From: Eli Zaretskii @ 2016-07-10 16:04 UTC (permalink / raw
To: Alan Third; +Cc: 23934
> From: Alan Third <alan@idiocy.org>
> Date: Sun, 10 Jul 2016 16:45:51 +0100
>
> When using the font "Menlo" Emacs displays the cyrillic text in the
> hello file incorrectly. "Monaco" works fine. This affects both Mac and
> NS ports.
How do we know it isn't a problem with that font?
I think the problem is triggered by displaying the u+0301 acute accent
above the а (to show the vowel with the accent). Does Menlo has a
glyph for that codepoint?
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#23934: 25.1.50; Incorrect rendering of cyrillic text on OS X
2016-07-10 16:04 ` Eli Zaretskii
@ 2016-07-10 16:28 ` Alan Third
2016-07-10 16:52 ` Eli Zaretskii
0 siblings, 1 reply; 7+ messages in thread
From: Alan Third @ 2016-07-10 16:28 UTC (permalink / raw
To: Eli Zaretskii; +Cc: 23934
[-- Attachment #1: Type: text/plain, Size: 2179 bytes --]
On Sun, Jul 10, 2016 at 07:04:40PM +0300, Eli Zaretskii wrote:
> > From: Alan Third <alan@idiocy.org>
> > Date: Sun, 10 Jul 2016 16:45:51 +0100
> >
> > When using the font "Menlo" Emacs displays the cyrillic text in the
> > hello file incorrectly. "Monaco" works fine. This affects both Mac and
> > NS ports.
>
> How do we know it isn't a problem with that font?
>
> I think the problem is triggered by displaying the u+0301 acute accent
> above the а (to show the vowel with the accent). Does Menlo has a
> glyph for that codepoint?
Yes, Emacs seems to think that the composed character takes up no
space. This may be no help whatsoever, but I've attached another image
showing a cyrillic a with acute alongside the latin version. The latin
one is not, afaik, composed, because I don't know how to do that. Both
have spaces round them.
I don't know how to check whether the font supports it.
Here's what describe-char says:
position: 148 of 234 (63%), column: 2
character: а (displayed as а) (codepoint 1072, #o2060, #x430)
preferred charset: cyrillic-iso8859-5 (Right-Hand Part of ISO/IEC 8859/5 (Latin/Cyrillic): ISO-IR-144)
code point in charset: 0x50
script: cyrillic
syntax: w which means: word
category: .:Base, L:Left-to-right (strong), Y:2-byte Cyrillic, c:Chinese, h:Korean, j:Japanese, y:Cyrillic
to input: type "C-x 8 RET 430" or "C-x 8 RET CYRILLIC SMALL LETTER A"
buffer code: #xD0 #xB0
file code: #xD0 #xB0 (encoded by coding system utf-8-unix)
display: composed to form "а́" (see below)
Composed with the following character(s) "́" using this font:
mac-ct:-*-Menlo-normal-normal-normal-*-12-*-*-*-m-0-iso10646-1
by these glyphs:
[0 1 1072 870 7 0 7 7 1 nil]
[0 1 769 646 7 2 6 10 -7 [-8 -1 -8]]
Character code properties: customize what to show
name: CYRILLIC SMALL LETTER A
general-category: Ll (Letter, Lowercase)
decomposition: (1072) ('а')
There are text properties here:
charset cyrillic-iso8859-5
face font-lock-string-face
fontified t
[back]
--
Alan Third
[-- Attachment #2: a with acute --]
[-- Type: image/png, Size: 8181 bytes --]
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#23934: 25.1.50; Incorrect rendering of cyrillic text on OS X
2016-07-10 16:28 ` Alan Third
@ 2016-07-10 16:52 ` Eli Zaretskii
2016-07-10 17:09 ` Alan Third
0 siblings, 1 reply; 7+ messages in thread
From: Eli Zaretskii @ 2016-07-10 16:52 UTC (permalink / raw
To: Alan Third; +Cc: 23934
> Date: Sun, 10 Jul 2016 17:28:02 +0100
> From: Alan Third <alan@idiocy.org>
> Cc: 23934@debbugs.gnu.org
>
> > How do we know it isn't a problem with that font?
> >
> > I think the problem is triggered by displaying the u+0301 acute accent
> > above the а (to show the vowel with the accent). Does Menlo has a
> > glyph for that codepoint?
>
> Yes, Emacs seems to think that the composed character takes up no
> space. This may be no help whatsoever, but I've attached another image
> showing a cyrillic a with acute alongside the latin version. The latin
> one is not, afaik, composed, because I don't know how to do that.
The Latin character is composed, because Emacs knows how to do that.
You can verify with "C-u C-x =".
Can you tell what does window-text-pixel-size return for the а́ part of
the text, both with Menlo and with Monaco?
> I don't know how to check whether the font supports it.
> Here's what describe-char says:
>
> position: 148 of 234 (63%), column: 2
> character: а (displayed as а) (codepoint 1072, #o2060, #x430)
> preferred charset: cyrillic-iso8859-5 (Right-Hand Part of ISO/IEC 8859/5 (Latin/Cyrillic): ISO-IR-144)
> code point in charset: 0x50
> script: cyrillic
> syntax: w which means: word
> category: .:Base, L:Left-to-right (strong), Y:2-byte Cyrillic, c:Chinese, h:Korean, j:Japanese, y:Cyrillic
> to input: type "C-x 8 RET 430" or "C-x 8 RET CYRILLIC SMALL LETTER A"
> buffer code: #xD0 #xB0
> file code: #xD0 #xB0 (encoded by coding system utf-8-unix)
> display: composed to form "а́" (see below)
>
> Composed with the following character(s) "́" using this font:
> mac-ct:-*-Menlo-normal-normal-normal-*-12-*-*-*-m-0-iso10646-1
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
The above line says that Menlo does have the glyph for the accent.
Emacs will not compose characters from different fonts.
> by these glyphs:
> [0 1 1072 870 7 0 7 7 1 nil]
> [0 1 769 646 7 2 6 10 -7 [-8 -1 -8]]
Can you show the corresponding data when you use the Monaco font?
Thanks.
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#23934: 25.1.50; Incorrect rendering of cyrillic text on OS X
2016-07-10 16:52 ` Eli Zaretskii
@ 2016-07-10 17:09 ` Alan Third
2016-07-11 14:40 ` Eli Zaretskii
0 siblings, 1 reply; 7+ messages in thread
From: Alan Third @ 2016-07-10 17:09 UTC (permalink / raw
To: Eli Zaretskii; +Cc: 23934
On Sun, Jul 10, 2016 at 07:52:57PM +0300, Eli Zaretskii wrote:
> > Date: Sun, 10 Jul 2016 17:28:02 +0100
> > From: Alan Third <alan@idiocy.org>
> > Cc: 23934@debbugs.gnu.org
> >
> > Yes, Emacs seems to think that the composed character takes up no
> > space. This may be no help whatsoever, but I've attached another image
> > showing a cyrillic a with acute alongside the latin version. The latin
> > one is not, afaik, composed, because I don't know how to do that.
>
> The Latin character is composed, because Emacs knows how to do that.
> You can verify with "C-u C-x =".
>
> Can you tell what does window-text-pixel-size return for the а́ part of
> the text, both with Menlo and with Monaco?
Using (window-text-pixel-size nil 3 5):
Menlo: (0 . 14)
Monaco: (7 . 16)
> > I don't know how to check whether the font supports it.
> > Here's what describe-char says:
> >
> > position: 148 of 234 (63%), column: 2
> > character: а (displayed as а) (codepoint 1072, #o2060, #x430)
> > preferred charset: cyrillic-iso8859-5 (Right-Hand Part of ISO/IEC 8859/5 (Latin/Cyrillic): ISO-IR-144)
> > code point in charset: 0x50
> > script: cyrillic
> > syntax: w which means: word
> > category: .:Base, L:Left-to-right (strong), Y:2-byte Cyrillic, c:Chinese, h:Korean, j:Japanese, y:Cyrillic
> > to input: type "C-x 8 RET 430" or "C-x 8 RET CYRILLIC SMALL LETTER A"
> > buffer code: #xD0 #xB0
> > file code: #xD0 #xB0 (encoded by coding system utf-8-unix)
> > display: composed to form "а́" (see below)
> >
> > Composed with the following character(s) "́" using this font:
> > mac-ct:-*-Menlo-normal-normal-normal-*-12-*-*-*-m-0-iso10646-1
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> The above line says that Menlo does have the glyph for the accent.
> Emacs will not compose characters from different fonts.
>
> > by these glyphs:
> > [0 1 1072 870 7 0 7 7 1 nil]
> > [0 1 769 646 7 2 6 10 -7 [-8 -1 -8]]
>
> Can you show the corresponding data when you use the Monaco font?
position: 3 of 7 (29%), column: 2
character: а (displayed as а) (codepoint 1072, #o2060, #x430)
preferred charset: unicode (Unicode (ISO10646))
code point in charset: 0x0430
script: cyrillic
syntax: w which means: word
category: .:Base, L:Left-to-right (strong), Y:2-byte Cyrillic, c:Chinese, h:Korean, j:Japanese, y:Cyrillic
to input: type "C-x 8 RET 430" or "C-x 8 RET CYRILLIC SMALL LETTER A"
buffer code: #xD0 #xB0
file code: #xD0 #xB0 (encoded by coding system utf-8-unix)
display: composed to form "а́" (see below)
Composed with the following character(s) "́" using this font:
mac-ct:-*-Monaco-normal-normal-normal-*-12-*-*-*-m-0-iso10646-1
by these glyphs:
[0 1 1072 449 7 0 7 7 1 nil]
[0 1 769 375 0 -6 -1 10 -7 nil]
Character code properties: customize what to show
name: CYRILLIC SMALL LETTER A
general-category: Ll (Letter, Lowercase)
decomposition: (1072) ('а')
--
Alan Third
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#23934: 25.1.50; Incorrect rendering of cyrillic text on OS X
2016-07-10 15:45 bug#23934: 25.1.50; Incorrect rendering of cyrillic text on OS X Alan Third
2016-07-10 16:04 ` Eli Zaretskii
@ 2016-07-11 4:44 ` YAMAMOTO Mitsuharu
1 sibling, 0 replies; 7+ messages in thread
From: YAMAMOTO Mitsuharu @ 2016-07-11 4:44 UTC (permalink / raw
To: Alan Third; +Cc: 23934-done
>>>>> On Sun, 10 Jul 2016 16:45:51 +0100, Alan Third <alan@idiocy.org> said:
> When using the font "Menlo" Emacs displays the cyrillic text in the
> hello file incorrectly. "Monaco" works fine. This affects both Mac and
> NS ports.
I've just pushed a fix to the trunk (commit
bfeda891a51178dd0032800ea4aef013c62bbe10). Sorry, I forgot to add
Bug# in the commit log.
YAMAMOTO Mitsuharu
mituharu@math.s.chiba-u.ac.jp
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#23934: 25.1.50; Incorrect rendering of cyrillic text on OS X
2016-07-10 17:09 ` Alan Third
@ 2016-07-11 14:40 ` Eli Zaretskii
0 siblings, 0 replies; 7+ messages in thread
From: Eli Zaretskii @ 2016-07-11 14:40 UTC (permalink / raw
To: Alan Third; +Cc: 23934
> Date: Sun, 10 Jul 2016 18:09:02 +0100
> From: Alan Third <alan@idiocy.org>
> Cc: 23934@debbugs.gnu.org
>
> Using (window-text-pixel-size nil 3 5):
>
> Menlo: (0 . 14)
> Monaco: (7 . 16)
It figures.
> > The above line says that Menlo does have the glyph for the accent.
> > Emacs will not compose characters from different fonts.
> >
> > > by these glyphs:
> > > [0 1 1072 870 7 0 7 7 1 nil]
> > > [0 1 769 646 7 2 6 10 -7 [-8 -1 -8]]
^
That "7" is IMO completely bogus. All the fonts I tried, and also
Monaco you tried, give a zero there.
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2016-07-11 14:40 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2016-07-10 15:45 bug#23934: 25.1.50; Incorrect rendering of cyrillic text on OS X Alan Third
2016-07-10 16:04 ` Eli Zaretskii
2016-07-10 16:28 ` Alan Third
2016-07-10 16:52 ` Eli Zaretskii
2016-07-10 17:09 ` Alan Third
2016-07-11 14:40 ` Eli Zaretskii
2016-07-11 4:44 ` YAMAMOTO Mitsuharu
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