* [NTG-context] rendering arabic diacritics
@ 2024-05-09 8:03 seyal.zavira
2024-05-09 9:31 ` [NTG-context] " Hans Hagen
0 siblings, 1 reply; 6+ messages in thread
From: seyal.zavira @ 2024-05-09 8:03 UTC (permalink / raw)
To: ntg-context
Hi all,
when i want to use the linked font for arabic texts it doesn't render diacritics properly
i doesn't have problem with this font in inkscape or libreoffice
what featureset should i apply?
font link:
https://drive.google.com/file/d/1hCcv6wqWjd-5GEKnaowh8E8YVbTgGqQr/view?usp=sharing
this is my MWE:
\definefontfeature [arabis]
[mode=node,language=dflt,script=arab,
init=yes,medi=yes,fina=yes,isol=yes,
liga=yes,dlig=yes,rlig=yes,clig=yes,
mark=yes,mkmk=yes,kern=yes,curs=yes]
\definefont [Ahang] [file:Ahang-Regular.otf*arabis at 18pt]
\setupalign[r2l]
\starttext
{\Ahang تَشْكِيل كَسْرَة}
\stoptext
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive : https://github.com/contextgarden/context
wiki : https://wiki.contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 6+ messages in thread
* [NTG-context] Re: rendering arabic diacritics
2024-05-09 8:03 [NTG-context] rendering arabic diacritics seyal.zavira
@ 2024-05-09 9:31 ` Hans Hagen
2024-05-09 12:17 ` Hamid,Idris
0 siblings, 1 reply; 6+ messages in thread
From: Hans Hagen @ 2024-05-09 9:31 UTC (permalink / raw)
To: seyal.zavira, mailing list for ConTeXt users
On 5/9/2024 10:03 AM, seyal.zavira@gmail.com wrote:
> Hi all,
>
> when i want to use the linked font for arabic texts it doesn't render diacritics properly
> i doesn't have problem with this font in inkscape or libreoffice
> what featureset should i apply?
>
> font link:
> https://drive.google.com/file/d/1hCcv6wqWjd-5GEKnaowh8E8YVbTgGqQr/view?usp=sharing
>
> this is my MWE:
> \definefontfeature [arabis]
> [mode=node,language=dflt,script=arab,
> init=yes,medi=yes,fina=yes,isol=yes,
> liga=yes,dlig=yes,rlig=yes,clig=yes,
> mark=yes,mkmk=yes,kern=yes,curs=yes]
> \definefont [Ahang] [file:Ahang-Regular.otf*arabis at 18pt]
> \setupalign[r2l]
> \starttext
> {\Ahang تَشْكِيل كَسْرَة}
> \stoptext
\definefont [Ahang] [file:Ahang-Regular.otf*arabic at 18pt]
but there is an issue with widths, ill send you a patch to test
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | 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 / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive : https://github.com/contextgarden/context
wiki : https://wiki.contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 6+ messages in thread
* [NTG-context] Re: rendering arabic diacritics
2024-05-09 9:31 ` [NTG-context] " Hans Hagen
@ 2024-05-09 12:17 ` Hamid,Idris
2024-05-09 12:29 ` Hans Hagen
0 siblings, 1 reply; 6+ messages in thread
From: Hamid,Idris @ 2024-05-09 12:17 UTC (permalink / raw)
To: mailing list for ConTeXt users
[-- Attachment #1.1: Type: text/plain, Size: 2512 bytes --]
Hi Seyal,
See below:
------ Original Message ------
From "Hans Hagen" <j.hagen@xs4all.nl<mailto:j.hagen@xs4all.nl>>
To "seyal.zavira@gmail.com<mailto:seyal.zavira@gmail.com>" <seyal.zavira@gmail.com<mailto:seyal.zavira@gmail.com>>; "mailing list for ConTeXt users" <ntg-context@ntg.nl<mailto:ntg-context@ntg.nl>>
Date 5/9/2024 3:31:45 AM
Subject [NTG-context] Re: rendering arabic diacritics
** Caution: EXTERNAL Sender **
On 5/9/2024 10:03 AM, seyal.zavira@gmail.com<mailto:seyal.zavira@gmail.com> wrote:
Hi all,
when i want to use the linked font for arabic texts it doesn't render diacritics properly
i doesn't have problem with this font in inkscape or libreoffice
what featureset should i apply?
font link:
https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F1hCcv6wqWjd-5GEKnaowh8E8YVbTgGqQr%2Fview%3Fusp%3Dsharing&data=05%7C02%7CIdris.Hamid%40ColoState.EDU%7C8e2b7a1a4eaf46f6b10808dc700b7b2a%7Cafb58802ff7a4bb1ab21367ff2ecfc8b%7C0%7C0%7C638508441848485171%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=51bK7I53UxZOK0PcbrYlpX2s%2Bdy%2BK83SslQZ%2BvhnvwU%3D&reserved=0<https://drive.google.com/file/d/1hCcv6wqWjd-5GEKnaowh8E8YVbTgGqQr/view?usp=sharing>
this is my MWE:
\definefontfeature [arabis]
[mode=node,language=dflt,script=arab,
init=yes,medi=yes,fina=yes,isol=yes,
liga=yes,dlig=yes,rlig=yes,clig=yes,
mark=yes,mkmk=yes,kern=yes,curs=yes]
\definefont [Ahang] [file:Ahang-Regular.otf*arabis at 18pt]
\setupalign[r2l]
\starttext
{\Ahang تَشْكِيل كَسْرَة}
\stoptext
\definefont [Ahang] [file:Ahang-Regular.otf*arabic at 18pt]
but there is an issue with widths, ill send you a patch to test
The provided "*arabic" featureset should suffice for this font. Also TEXpage is useful for this kind of MWE:
\definefont [Ahang] [file:Ahang-Regular.otf*arabic at 18pt]
\setupalign[r2l]
\startTEXpage[offset=1em]
{\Ahang تَشْكِيل كَسْرَة}
\stopTEXpage
In prehistoric ConTeXt version
2023.09.26 18:19
the diacritics look fine in both ConTeXt and unicode editor MS Notepad.
So if there is something wrong, it must be in a more recent version.
For comparison: Before applying Hans' patch, could you kindly send your pdf of the MWE that shows the error? Mine is attached.
Best wishes
Idris
--
Idris Samawi Hamid, Professor
Department of Philosophy
Colorado State University
Fort Collins, CO 80523
[-- Attachment #1.2: Type: text/html, Size: 6161 bytes --]
[-- Attachment #2: ahang.pdf --]
[-- Type: application/pdf, Size: 5598 bytes --]
[-- Attachment #3: Type: text/plain, Size: 511 bytes --]
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive : https://github.com/contextgarden/context
wiki : https://wiki.contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 6+ messages in thread
* [NTG-context] Re: rendering arabic diacritics
2024-05-09 12:17 ` Hamid,Idris
@ 2024-05-09 12:29 ` Hans Hagen
2024-05-09 13:04 ` Hamid,Idris
0 siblings, 1 reply; 6+ messages in thread
From: Hans Hagen @ 2024-05-09 12:29 UTC (permalink / raw)
To: ntg-context
On 5/9/2024 2:17 PM, Hamid,Idris wrote:
> Hi Seyal,
>
> See below:
>
> ------ Original Message ------
> From "Hans Hagen" <j.hagen@xs4all.nl <mailto:j.hagen@xs4all.nl>>
> To "seyal.zavira@gmail.com <mailto:seyal.zavira@gmail.com>"
> <seyal.zavira@gmail.com <mailto:seyal.zavira@gmail.com>>; "mailing list
> for ConTeXt users" <ntg-context@ntg.nl <mailto:ntg-context@ntg.nl>>
> Date 5/9/2024 3:31:45 AM
> Subject [NTG-context] Re: rendering arabic diacritics
>
>> ** Caution: EXTERNAL Sender **
>> On 5/9/2024 10:03 AM, seyal.zavira@gmail.com
>> <mailto:seyal.zavira@gmail.com> wrote:
>>> Hi all,
>>> when i want to use the linked font for arabic texts it doesn't render
>>> diacritics properly
>>> i doesn't have problem with this font in inkscape or libreoffice
>>> what featureset should i apply?
>>> font link:
>>> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F1hCcv6wqWjd-5GEKnaowh8E8YVbTgGqQr%2Fview%3Fusp%3Dsharing&data=05%7C02%7CIdris.Hamid%40ColoState.EDU%7C8e2b7a1a4eaf46f6b10808dc700b7b2a%7Cafb58802ff7a4bb1ab21367ff2ecfc8b%7C0%7C0%7C638508441848485171%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=51bK7I53UxZOK0PcbrYlpX2s%2Bdy%2BK83SslQZ%2BvhnvwU%3D&reserved=0 <https://drive.google.com/file/d/1hCcv6wqWjd-5GEKnaowh8E8YVbTgGqQr/view?usp=sharing>
>>> this is my MWE:
>>> \definefontfeature [arabis]
>>> [mode=node,language=dflt,script=arab,
>>> init=yes,medi=yes,fina=yes,isol=yes,
>>> liga=yes,dlig=yes,rlig=yes,clig=yes,
>>> mark=yes,mkmk=yes,kern=yes,curs=yes]
>>> \definefont [Ahang] [file:Ahang-Regular.otf*arabis at 18pt]
>>> \setupalign[r2l]
>>> \starttext
>>> {\Ahang تَشْكِيل كَسْرَة}
>>> \stoptext
>> \definefont [Ahang] [file:Ahang-Regular.otf*arabic at 18pt]
>> but there is an issue with widths, ill send you a patch to test
>
> The provided "*arabic" featureset should suffice for this font. Also
> TEXpage is useful for this kind of MWE:
>
> \definefont [Ahang] [file:Ahang-Regular.otf*arabic at 18pt]
> \setupalign[r2l]
> \startTEXpage[offset=1em]
> {\Ahang تَشْكِيل كَسْرَة}
> \stopTEXpage
>
> In prehistoric ConTeXt version
>
> 2023.09.26 18:19
>
> the diacritics look fine in both ConTeXt and unicode editor MS Notepad.
>
> So if there is something wrong, it must be in a more recent version.
>
> For comparison: Before applying Hans' patch, could you kindly send your
> pdf of the MWE that shows the error? Mine is attached.
Ahang-Regular has no width settings for the marks so we need to zero
them. Tahrir_Regular has widths but these we explictly need to zero with
a pseudo feature then. (What are the assumptions when we do arabic? That
marks are to have zero width?)
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | 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 / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive : https://github.com/contextgarden/context
wiki : https://wiki.contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 6+ messages in thread
* [NTG-context] Re: rendering arabic diacritics
2024-05-09 12:29 ` Hans Hagen
@ 2024-05-09 13:04 ` Hamid,Idris
2024-05-09 17:43 ` seyal zavira
0 siblings, 1 reply; 6+ messages in thread
From: Hamid,Idris @ 2024-05-09 13:04 UTC (permalink / raw)
To: mailing list for ConTeXt users
[-- Attachment #1.1: Type: text/plain, Size: 4279 bytes --]
------ Original Message ------
From "Hans Hagen" <j.hagen@xs4all.nl<mailto:j.hagen@xs4all.nl>>
To "ntg-context@ntg.nl<mailto:ntg-context@ntg.nl>" <ntg-context@ntg.nl<mailto:ntg-context@ntg.nl>>
Date 5/9/2024 6:29:40 AM
Subject [NTG-context] Re: rendering arabic diacritics
** Caution: EXTERNAL Sender **
On 5/9/2024 2:17 PM, Hamid,Idris wrote:
Hi Seyal,
See below:
------ Original Message ------
From "Hans Hagen" <j.hagen@xs4all.nl<mailto:j.hagen@xs4all.nl> <mailto:j.hagen@xs4all.nl>>
To "seyal.zavira@gmail.com<mailto:seyal.zavira@gmail.com> <mailto:seyal.zavira@gmail.com>"
<seyal.zavira@gmail.com<mailto:seyal.zavira@gmail.com> <mailto:seyal.zavira@gmail.com>>; "mailing list
for ConTeXt users" <ntg-context@ntg.nl<mailto:ntg-context@ntg.nl> <mailto:ntg-context@ntg.nl>>
Date 5/9/2024 3:31:45 AM
Subject [NTG-context] Re: rendering arabic diacritics
** Caution: EXTERNAL Sender **
On 5/9/2024 10:03 AM, seyal.zavira@gmail.com<mailto:seyal.zavira@gmail.com>
<mailto:seyal.zavira@gmail.com> wrote:
Hi all,
when i want to use the linked font for arabic texts it doesn't render
diacritics properly
i doesn't have problem with this font in inkscape or libreoffice
what featureset should i apply?
font link:
https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F1hCcv6wqWjd-5GEKnaowh8E8YVbTgGqQr%2Fview%3Fusp%3Dsharing&data=05%7C02%7CIdris.Hamid%40ColoState.EDU%7Cc8b63025b08545aa636308dc70244f52%7Cafb58802ff7a4bb1ab21367ff2ecfc8b%7C0%7C0%7C638508548453863256%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=a2qMEGD0wo%2FhM6oNJ7AvfFyRPMEJuu0bFeceX4PPnsg%3D&reserved=0<https://drive.google.com/file/d/1hCcv6wqWjd-5GEKnaowh8E8YVbTgGqQr/view?usp=sharing> <https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F1hCcv6wqWjd-5GEKnaowh8E8YVbTgGqQr%2Fview%3Fusp%3Dsharing&data=05%7C02%7CIdris.Hamid%40ColoState.EDU%7Cc8b63025b08545aa636308dc70244f52%7Cafb58802ff7a4bb1ab21367ff2ecfc8b%7C0%7C0%7C638508548453873437%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=%2FLAHOebc2kdBEl4rBsEnp7gV4f6ZpXMWNt4FoUptSus%3D&reserved=0<https://drive.google.com/file/d/1hCcv6wqWjd-5GEKnaowh8E8YVbTgGqQr/view?usp=sharing>>
this is my MWE:
\definefontfeature [arabis]
[mode=node,language=dflt,script=arab,
init=yes,medi=yes,fina=yes,isol=yes,
liga=yes,dlig=yes,rlig=yes,clig=yes,
mark=yes,mkmk=yes,kern=yes,curs=yes]
\definefont [Ahang] [file:Ahang-Regular.otf*arabis at 18pt]
\setupalign[r2l]
\starttext
{\Ahang تَشْكِيل كَسْرَة}
\stoptext
\definefont [Ahang] [file:Ahang-Regular.otf*arabic at 18pt]
but there is an issue with widths, ill send you a patch to test
The provided "*arabic" featureset should suffice for this font. Also
TEXpage is useful for this kind of MWE:
\definefont [Ahang] [file:Ahang-Regular.otf*arabic at 18pt]
\setupalign[r2l]
\startTEXpage[offset=1em]
{\Ahang تَشْكِيل كَسْرَة}
\stopTEXpage
In prehistoric ConTeXt version
2023.09.26 18:19
the diacritics look fine in both ConTeXt and unicode editor MS Notepad.
So if there is something wrong, it must be in a more recent version.
For comparison: Before applying Hans' patch, could you kindly send your
pdf of the MWE that shows the error? Mine is attached.
Ahang-Regular has no width settings for the marks so we need to zero
them. Tahrir_Regular has widths but these we explictly need to zero with
a pseudo feature then. (What are the assumptions when we do arabic? That
marks are to have zero width?)
Yes, marks should have zero-width but Uniscribe (and Harbuzz?/its successor?) provide support for legacy fonts with non-zero width.
But sometimes font designers imitate legacy behavior..
So it used to be often the case that a font with diacritics that worked in Uniscribe etc. (e.g., Deja Vu Arabic) would show marks with widths in ConTeXt.
In order to be more helpful, I should update to the latest beta, run some tests, and get current on the status of these matters..
Idris
--
Idris Samawi Hamid, Professor
Department of Philosophy
Colorado State University
Fort Collins, CO 80523
[-- Attachment #1.2: Type: text/html, Size: 8705 bytes --]
[-- Attachment #2: Type: text/plain, Size: 511 bytes --]
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive : https://github.com/contextgarden/context
wiki : https://wiki.contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 6+ messages in thread
* [NTG-context] Re: rendering arabic diacritics
2024-05-09 13:04 ` Hamid,Idris
@ 2024-05-09 17:43 ` seyal zavira
0 siblings, 0 replies; 6+ messages in thread
From: seyal zavira @ 2024-05-09 17:43 UTC (permalink / raw)
To: Hamid,Idris, mailing list for ConTeXt users
[-- Attachment #1.1: Type: text/plain, Size: 5096 bytes --]
Of course!
i attached output file before and after applying new patch
On Thu, May 9, 2024 at 9:08 AM Hamid,Idris <Idris.Hamid@colostate.edu>
wrote:
>
>
> ------ Original Message ------
> From "Hans Hagen" <j.hagen@xs4all.nl>
> To "ntg-context@ntg.nl" <ntg-context@ntg.nl>
> Date 5/9/2024 6:29:40 AM
> Subject [NTG-context] Re: rendering arabic diacritics
>
> ** Caution: EXTERNAL Sender **
>
> On 5/9/2024 2:17 PM, Hamid,Idris wrote:
>
> Hi Seyal,
>
> See below:
>
> ------ Original Message ------
> From "Hans Hagen" <j.hagen@xs4all.nl <mailto:j.hagen@xs4all.nl
> <j.hagen@xs4all.nl>>>
> To "seyal.zavira@gmail.com <mailto:seyal.zavira@gmail.com
> <seyal.zavira@gmail.com>>"
> <seyal.zavira@gmail.com <mailto:seyal.zavira@gmail.com
> <seyal.zavira@gmail.com>>>; "mailing list
> for ConTeXt users" <ntg-context@ntg.nl <mailto:ntg-context@ntg.nl
> <ntg-context@ntg.nl>>>
> Date 5/9/2024 3:31:45 AM
> Subject [NTG-context] Re: rendering arabic diacritics
>
>
> ** Caution: EXTERNAL Sender **
> On 5/9/2024 10:03 AM, seyal.zavira@gmail.com
> <mailto:seyal.zavira@gmail.com <seyal.zavira@gmail.com>> wrote:
>
> Hi all,
> when i want to use the linked font for arabic texts it doesn't render
> diacritics properly
> i doesn't have problem with this font in inkscape or libreoffice
> what featureset should i apply?
> font link:
>
> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F1hCcv6wqWjd-5GEKnaowh8E8YVbTgGqQr%2Fview%3Fusp%3Dsharing&data=05%7C02%7CIdris.Hamid%40ColoState.EDU%7Cc8b63025b08545aa636308dc70244f52%7Cafb58802ff7a4bb1ab21367ff2ecfc8b%7C0%7C0%7C638508548453863256%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=a2qMEGD0wo%2FhM6oNJ7AvfFyRPMEJuu0bFeceX4PPnsg%3D&reserved=0
> <https://drive.google.com/file/d/1hCcv6wqWjd-5GEKnaowh8E8YVbTgGqQr/view?usp=sharing>
> <
> https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdrive.google.com%2Ffile%2Fd%2F1hCcv6wqWjd-5GEKnaowh8E8YVbTgGqQr%2Fview%3Fusp%3Dsharing&data=05%7C02%7CIdris.Hamid%40ColoState.EDU%7Cc8b63025b08545aa636308dc70244f52%7Cafb58802ff7a4bb1ab21367ff2ecfc8b%7C0%7C0%7C638508548453873437%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=%2FLAHOebc2kdBEl4rBsEnp7gV4f6ZpXMWNt4FoUptSus%3D&reserved=0
> <https://drive.google.com/file/d/1hCcv6wqWjd-5GEKnaowh8E8YVbTgGqQr/view?usp=sharing>
> >
> this is my MWE:
> \definefontfeature [arabis]
> [mode=node,language=dflt,script=arab,
> init=yes,medi=yes,fina=yes,isol=yes,
> liga=yes,dlig=yes,rlig=yes,clig=yes,
> mark=yes,mkmk=yes,kern=yes,curs=yes]
> \definefont [Ahang] [file:Ahang-Regular.otf*arabis at 18pt]
> \setupalign[r2l]
> \starttext
> {\Ahang تَشْكِيل كَسْرَة}
> \stoptext
>
> \definefont [Ahang] [file:Ahang-Regular.otf*arabic at 18pt]
> but there is an issue with widths, ill send you a patch to test
>
>
> The provided "*arabic" featureset should suffice for this font. Also
> TEXpage is useful for this kind of MWE:
>
> \definefont [Ahang] [file:Ahang-Regular.otf*arabic at 18pt]
> \setupalign[r2l]
> \startTEXpage[offset=1em]
> {\Ahang تَشْكِيل كَسْرَة}
> \stopTEXpage
>
> In prehistoric ConTeXt version
>
> 2023.09.26 18:19
>
> the diacritics look fine in both ConTeXt and unicode editor MS Notepad.
>
> So if there is something wrong, it must be in a more recent version.
>
> For comparison: Before applying Hans' patch, could you kindly send your
> pdf of the MWE that shows the error? Mine is attached.
>
> Ahang-Regular has no width settings for the marks so we need to zero
> them. Tahrir_Regular has widths but these we explictly need to zero with
> a pseudo feature then. (What are the assumptions when we do arabic? That
> marks are to have zero width?)
>
>
> Yes, marks should have zero-width but Uniscribe (and Harbuzz?/its
> successor?) provide support for legacy fonts with non-zero width.
>
> But sometimes font designers imitate legacy behavior..
>
> So it used to be often the case that a font with diacritics that worked in
> Uniscribe etc. (e.g., Deja Vu Arabic) would show marks with widths in
> ConTeXt.
>
> In order to be more helpful, I should update to the latest beta, run some
> tests, and get current on the status of these matters..
>
> Idris
> --
> Idris Samawi Hamid, Professor
> Department of Philosophy
> Colorado State University
> Fort Collins, CO 80523
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive : https://github.com/contextgarden/context
> wiki : https://wiki.contextgarden.net
>
> ___________________________________________________________________________________
>
[-- Attachment #1.2: Type: text/html, Size: 8637 bytes --]
[-- Attachment #2: test.pdf --]
[-- Type: application/pdf, Size: 7617 bytes --]
[-- Attachment #3: test2.pdf --]
[-- Type: application/pdf, Size: 7611 bytes --]
[-- Attachment #4: Type: text/plain, Size: 511 bytes --]
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive : https://github.com/contextgarden/context
wiki : https://wiki.contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2024-05-09 17:46 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2024-05-09 8:03 [NTG-context] rendering arabic diacritics seyal.zavira
2024-05-09 9:31 ` [NTG-context] " Hans Hagen
2024-05-09 12:17 ` Hamid,Idris
2024-05-09 12:29 ` Hans Hagen
2024-05-09 13:04 ` Hamid,Idris
2024-05-09 17:43 ` seyal zavira
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).