* Urdu with NotoNastaliqUrdu-Regular.ttf
@ 2015-11-27 21:56 Philipp Gesang
2015-11-28 10:26 ` Hans Hagen
2015-11-29 11:46 ` Hans Hagen
0 siblings, 2 replies; 9+ messages in thread
From: Philipp Gesang @ 2015-11-27 21:56 UTC (permalink / raw)
To: ConTeXt ML
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Hi Hans, everybody
there’s a bug report concerning one of the Noto fonts:
https://github.com/lualatex/luaotfload/issues/292
Fonts are freely available: https://www.google.com/get/noto/
Quick link to the example translated to Context:
https://bitbucket.org/phg/lua-la-tex-tests/src/tip/context/cnt-urdu.tex
Those features are what’s applied by Luaotfload by default for
Arabic.
Best,
Philipp
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* Re: Urdu with NotoNastaliqUrdu-Regular.ttf
2015-11-27 21:56 Urdu with NotoNastaliqUrdu-Regular.ttf Philipp Gesang
@ 2015-11-28 10:26 ` Hans Hagen
2015-11-28 11:49 ` Deepak Jois
2015-11-29 11:46 ` Hans Hagen
1 sibling, 1 reply; 9+ messages in thread
From: Hans Hagen @ 2015-11-28 10:26 UTC (permalink / raw)
To: ntg-context
On 11/27/2015 10:56 PM, Philipp Gesang wrote:
> Hi Hans, everybody
>
> there’s a bug report concerning one of the Noto fonts:
>
> https://github.com/lualatex/luaotfload/issues/292
>
> Fonts are freely available: https://www.google.com/get/noto/
> Quick link to the example translated to Context:
>
> https://bitbucket.org/phg/lua-la-tex-tests/src/tip/context/cnt-urdu.tex
>
> Those features are what’s applied by Luaotfload by default for
> Arabic.
something cursive but anyhow, there us no urdu language (dflt has to be
used)
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| www.pragma-pod.nl
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* Re: Urdu with NotoNastaliqUrdu-Regular.ttf
2015-11-28 10:26 ` Hans Hagen
@ 2015-11-28 11:49 ` Deepak Jois
2015-11-28 19:02 ` Hans Hagen
0 siblings, 1 reply; 9+ messages in thread
From: Deepak Jois @ 2015-11-28 11:49 UTC (permalink / raw)
To: mailing list for ConTeXt users
On Sat, Nov 28, 2015 at 3:56 PM, Hans Hagen <pragma@wxs.nl> wrote:
> something cursive but anyhow, there us no urdu language (dflt has to be
> used)
I reported the bug originally. I changed the fontspec directive in my
test file to not specify the language. I got a better output, but
still pretty bad.
Details w/ screenshot:
https://github.com/lualatex/luaotfload/issues/292#issuecomment-160283333
Deepak
PS: Btw fontspec does not complain about the language. In XeTeX, my
experience has been that if a language is not present, it logs a
message to stdout. I am not sure if fontspec on LuaLaTeX has the same
behavior, but I did not see a message complaining about language.
Also, here is the otfinfo output:
$> otfinfo -s NotoNastaliqUrdu-Regular.ttf
arab Arabic
arab.ARA Arabic/Arabic
arab.FAR Arabic/Farsi
arab.KSH Arabic/Kashmiri
arab.SND Arabic/Sindhi
arab.URD Arabic/Urdu
dflt <unknown script>
latn Latin
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* Re: Urdu with NotoNastaliqUrdu-Regular.ttf
2015-11-28 11:49 ` Deepak Jois
@ 2015-11-28 19:02 ` Hans Hagen
2015-11-29 1:36 ` Deepak Jois
0 siblings, 1 reply; 9+ messages in thread
From: Hans Hagen @ 2015-11-28 19:02 UTC (permalink / raw)
To: mailing list for ConTeXt users
On 11/28/2015 12:49 PM, Deepak Jois wrote:
> On Sat, Nov 28, 2015 at 3:56 PM, Hans Hagen <pragma@wxs.nl> wrote:
>> something cursive but anyhow, there us no urdu language (dflt has to be
>> used)
>
> I reported the bug originally. I changed the fontspec directive in my
> test file to not specify the language. I got a better output, but
> still pretty bad.
>
> Details w/ screenshot:
> https://github.com/lualatex/luaotfload/issues/292#issuecomment-160283333
>
> Deepak
>
> PS: Btw fontspec does not complain about the language. In XeTeX, my
> experience has been that if a language is not present, it logs a
> message to stdout. I am not sure if fontspec on LuaLaTeX has the same
> behavior, but I did not see a message complaining about language.
>
> Also, here is the otfinfo output:
>
> $> otfinfo -s NotoNastaliqUrdu-Regular.ttf
> arab Arabic
> arab.ARA Arabic/Arabic
> arab.FAR Arabic/Farsi
> arab.KSH Arabic/Kashmiri
> arab.SND Arabic/Sindhi
> arab.URD Arabic/Urdu
> dflt <unknown script>
> latn Latin
well, only for gsub, not for gpos where only arab/dflt is defined ...
okay we could have another heuristic for that but of course it then
becomes harder to *not* use some feature
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
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* Re: Urdu with NotoNastaliqUrdu-Regular.ttf
2015-11-28 19:02 ` Hans Hagen
@ 2015-11-29 1:36 ` Deepak Jois
2015-11-29 3:38 ` Deepak Jois
2015-11-29 10:12 ` Hans Hagen
0 siblings, 2 replies; 9+ messages in thread
From: Deepak Jois @ 2015-11-29 1:36 UTC (permalink / raw)
To: mailing list for ConTeXt users
On Sun, Nov 29, 2015 at 12:32 AM, Hans Hagen <pragma@wxs.nl> wrote:
> well, only for gsub, not for gpos where only arab/dflt is defined
Are you saying that is a bug with the font? If so, I could report it,
for what it’s worth.
Deepak
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* Re: Urdu with NotoNastaliqUrdu-Regular.ttf
2015-11-29 1:36 ` Deepak Jois
@ 2015-11-29 3:38 ` Deepak Jois
2015-11-29 10:09 ` Hans Hagen
2015-11-29 10:12 ` Hans Hagen
1 sibling, 1 reply; 9+ messages in thread
From: Deepak Jois @ 2015-11-29 3:38 UTC (permalink / raw)
To: mailing list for ConTeXt users
On Sun, Nov 29, 2015 at 7:06 AM, Deepak Jois <deepak.jois@gmail.com> wrote:
> On Sun, Nov 29, 2015 at 12:32 AM, Hans Hagen <pragma@wxs.nl> wrote:
>> well, only for gsub, not for gpos where only arab/dflt is defined
>
> Are you saying that is a bug with the font? If so, I could report it,
> for what it’s worth.
>
Tried to look into the spec regarding GPOS lookups:
https://www.microsoft.com/typography/otspec/gpos.htm
<quote>
…
To access GPOS information, clients should use the following procedure:
1. Locate the current script in the GPOS ScriptList table.
2. If the language system is known, search the script for the correct
LangSys table; otherwise, use the script's default language system
(DefaultLangSys table).
…
</quote>
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* Re: Urdu with NotoNastaliqUrdu-Regular.ttf
2015-11-29 3:38 ` Deepak Jois
@ 2015-11-29 10:09 ` Hans Hagen
0 siblings, 0 replies; 9+ messages in thread
From: Hans Hagen @ 2015-11-29 10:09 UTC (permalink / raw)
To: ntg-context
On 11/29/2015 4:38 AM, Deepak Jois wrote:
> On Sun, Nov 29, 2015 at 7:06 AM, Deepak Jois <deepak.jois@gmail.com> wrote:
>> On Sun, Nov 29, 2015 at 12:32 AM, Hans Hagen <pragma@wxs.nl> wrote:
>>> well, only for gsub, not for gpos where only arab/dflt is defined
>>
>> Are you saying that is a bug with the font? If so, I could report it,
>> for what it’s worth.
>>
>
> Tried to look into the spec regarding GPOS lookups:
> https://www.microsoft.com/typography/otspec/gpos.htm
>
> <quote>
> …
>
> To access GPOS information, clients should use the following procedure:
>
> 1. Locate the current script in the GPOS ScriptList table.
>
> 2. If the language system is known, search the script for the correct
> LangSys table; otherwise, use the script's default language system
> (DefaultLangSys table).
>
> …
> </quote>
yes but for testing and control i don't like hard coded defaults so that
has to go via an option; a next version will have a 'default' option
that when set to true will fallback on dflt .. and tex is about control
(btw, features and what should be on/off are the messiest part of
opentype ... and often very inconsistent so ..)
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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* Re: Urdu with NotoNastaliqUrdu-Regular.ttf
2015-11-29 1:36 ` Deepak Jois
2015-11-29 3:38 ` Deepak Jois
@ 2015-11-29 10:12 ` Hans Hagen
1 sibling, 0 replies; 9+ messages in thread
From: Hans Hagen @ 2015-11-29 10:12 UTC (permalink / raw)
To: ntg-context
On 11/29/2015 2:36 AM, Deepak Jois wrote:
> On Sun, Nov 29, 2015 at 12:32 AM, Hans Hagen <pragma@wxs.nl> wrote:
>> well, only for gsub, not for gpos where only arab/dflt is defined
>
> Are you saying that is a bug with the font? If so, I could report it,
> for what it’s worth.
when it comes to features and its implementation all bugs are also
features (so if someone puts something positioning related in a gsub
that is quite possible and i've seen it)
in general i think that features / script / languages are often defined
a bit sloppy so i always look at what a font really supports (same for
names in fonts ... i only trust filenames)
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Urdu with NotoNastaliqUrdu-Regular.ttf
2015-11-27 21:56 Urdu with NotoNastaliqUrdu-Regular.ttf Philipp Gesang
2015-11-28 10:26 ` Hans Hagen
@ 2015-11-29 11:46 ` Hans Hagen
1 sibling, 0 replies; 9+ messages in thread
From: Hans Hagen @ 2015-11-29 11:46 UTC (permalink / raw)
To: ntg-context
On 11/27/2015 10:56 PM, Philipp Gesang wrote:
> Hi Hans, everybody
>
> there’s a bug report concerning one of the Noto fonts:
>
> https://github.com/lualatex/luaotfload/issues/292
>
> Fonts are freely available: https://www.google.com/get/noto/
> Quick link to the example translated to Context:
>
> https://bitbucket.org/phg/lua-la-tex-tests/src/tip/context/cnt-urdu.tex
>
> Those features are what’s applied by Luaotfload by default for
> Arabic.
a next version provides
autoscript=position|substitution|yes
and
autolanguage=position|substitution|yes
(no uploads now, probably when luatex 0.86 releases)
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
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2015-11-27 21:56 Urdu with NotoNastaliqUrdu-Regular.ttf Philipp Gesang
2015-11-28 10:26 ` Hans Hagen
2015-11-28 11:49 ` Deepak Jois
2015-11-28 19:02 ` Hans Hagen
2015-11-29 1:36 ` Deepak Jois
2015-11-29 3:38 ` Deepak Jois
2015-11-29 10:09 ` Hans Hagen
2015-11-29 10:12 ` Hans Hagen
2015-11-29 11:46 ` Hans Hagen
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