* font trickery
@ 2013-05-14 18:01 Hans Hagen
2013-05-14 22:51 ` Idris Samawi Hamid ادريس سماوي حامد
0 siblings, 1 reply; 7+ messages in thread
From: Hans Hagen @ 2013-05-14 18:01 UTC (permalink / raw)
To: mailing list for ConTeXt users
Hi,
I'm on-and-off working on the more technical font manual and in the
process also check some old code i've laying around (deciding on what to
include and not). I'm also revising the tracer styles.
Which makes me wonder: are there specific additional features that one
would like to see in context (mkiv only of course) with respect to font
support?
Hans
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^ permalink raw reply [flat|nested] 7+ messages in thread* Re: font trickery 2013-05-14 18:01 font trickery Hans Hagen @ 2013-05-14 22:51 ` Idris Samawi Hamid ادريس سماوي حامد 2013-05-15 6:09 ` Georg Duffner 0 siblings, 1 reply; 7+ messages in thread From: Idris Samawi Hamid ادريس سماوي حامد @ 2013-05-14 22:51 UTC (permalink / raw) To: mailing list for ConTeXt users; +Cc: Hans Hagen Hi Hans, On Tue, 14 May 2013 12:01:36 -0600, Hans Hagen <pragma@wxs.nl> wrote: > I'm on-and-off working on the more technical font manual and in the > process also check some old code i've laying around (deciding on what to > include and not). I'm also revising the tracer styles. > > Which makes me wonder: are there specific additional features that one > would like to see in context (mkiv only of course) with respect to font > support? This may be beyond the scope of your current plans, but worth considering: It would be nice to have a mechanism where we can override/add opentype gsub and gpos features. Early on in the history of luatex we once had a mechanism that did this using FontForge's version of Adobe Feature Files. From what I understand, the AFF syntax is finally mature and supports all lookup types: http://www.adobe.com/devnet/opentype/afdko/topic_feature_file_syntax.html Or maybe we have our own syntax in lua, goodies etc. Anyway, a way to control/override opentype gsub and gpos behavior would be interesting. Even if a total controller is too ambitious/unwieldy, just being able to do a few basic gsub/gpos tricks may be useful for, e.g., bugs in the font. Anyway, something to think about. Best wishes Idris -- Professor Idris Samawi Hamid 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 / 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] 7+ messages in thread
* Re: font trickery 2013-05-14 22:51 ` Idris Samawi Hamid ادريس سماوي حامد @ 2013-05-15 6:09 ` Georg Duffner 2013-05-15 14:51 ` Idris Samawi Hamid ادريس سماوي حامد 0 siblings, 1 reply; 7+ messages in thread From: Georg Duffner @ 2013-05-15 6:09 UTC (permalink / raw) To: ntg-context Am 15.05.2013 00:51, schrieb Idris Samawi Hamid ادريس سماوي حامد: > Hi Hans, > > On Tue, 14 May 2013 12:01:36 -0600, Hans Hagen <pragma@wxs.nl> wrote: > >> I'm on-and-off working on the more technical font manual and in the >> process also check some old code i've laying around (deciding on what >> to include and not). I'm also revising the tracer styles. >> >> Which makes me wonder: are there specific additional features that one >> would like to see in context (mkiv only of course) with respect to >> font support? > > This may be beyond the scope of your current plans, but worth > considering: It would be nice to have a mechanism where we can > override/add opentype gsub and gpos features. Early on in the history of > luatex we once had a mechanism that did this using FontForge's version > of Adobe Feature Files. From what I understand, the AFF syntax is > finally mature and supports all lookup types: > > http://www.adobe.com/devnet/opentype/afdko/topic_feature_file_syntax.html > > Or maybe we have our own syntax in lua, goodies etc. Anyway, a way to > control/override opentype gsub and gpos behavior would be interesting. > Even if a total controller is too ambitious/unwieldy, just being able to > do a few basic gsub/gpos tricks may be useful for, e.g., bugs in the font. > > Anyway, something to think about. > > Best wishes > Idris Hi Idris and Hans, this is a great idea. Is this not available any longer in current luatex? The fontspec (xelatex+lualatex) manual lists this as a luatex only feature (I’ve used it once some time ago). I know a lot of fonts and other problems that could be fixed this way. I’d prefer to stay with the AFF syntax which is well established. Best regards, Georg ___________________________________________________________________________________ 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] 7+ messages in thread
* Re: font trickery 2013-05-15 6:09 ` Georg Duffner @ 2013-05-15 14:51 ` Idris Samawi Hamid ادريس سماوي حامد 2013-05-15 16:41 ` Khaled Hosny 0 siblings, 1 reply; 7+ messages in thread From: Idris Samawi Hamid ادريس سماوي حامد @ 2013-05-15 14:51 UTC (permalink / raw) To: mailing list for ConTeXt users Hi Georg, On Wed, 15 May 2013 00:09:22 -0600, Georg Duffner <g.duffner@gmail.com> wrote: > I’d prefer to stay with the AFF syntax which is well established. I wonder if the latest, virtually frozen FontForge supports the current AFF syntax or still uses an earlier version. Before AFF was complete George added the missing functionality but Adobe did not accept his additions. The former luatex support was probably based on George's modifications to the AFF syntax. Hans and Taco know better, but I suppose a newer implementation of AFF in mkiv could be done in lua without touching the binary. But anyway, this may very well be beyond Hans' current plans for font trickery, but it's fun to discuss possibilities. Best wishes Idris -- Professor Idris Samawi Hamid 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 / 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] 7+ messages in thread
* Re: font trickery 2013-05-15 14:51 ` Idris Samawi Hamid ادريس سماوي حامد @ 2013-05-15 16:41 ` Khaled Hosny 2013-05-17 23:55 ` Hans Hagen 0 siblings, 1 reply; 7+ messages in thread From: Khaled Hosny @ 2013-05-15 16:41 UTC (permalink / raw) To: mailing list for ConTeXt users On Wed, May 15, 2013 at 08:51:28AM -0600, Idris Samawi Hamid ادريس سماوي حامد wrote: > Hi Georg, > > On Wed, 15 May 2013 00:09:22 -0600, Georg Duffner > <g.duffner@gmail.com> wrote: > > >I’d prefer to stay with the AFF syntax which is well established. > > I wonder if the latest, virtually frozen FontForge supports the > current AFF syntax or still uses an earlier version. Before AFF was > complete George added the missing functionality but Adobe did not > accept his additions. The former luatex support was probably based > on George's modifications to the AFF syntax. > > Hans and Taco know better, but I suppose a newer implementation of > AFF in mkiv could be done in lua without touching the binary. Right, the version of FontForge included in LuaTeX uses the old syntax, FontForge has dropped it for the new Adobe syntax for few years now, but it didn’t make its way into LuaTeX. Regards, Khaled > But anyway, this may very well be beyond Hans' current plans for > font trickery, but it's fun to discuss possibilities. I think there is already some (not documented way) to achieve the same effect in pure Lua code (Hans uses it to implement tlig and the likes). Regards, Khaled ___________________________________________________________________________________ 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] 7+ messages in thread
* Re: font trickery 2013-05-15 16:41 ` Khaled Hosny @ 2013-05-17 23:55 ` Hans Hagen 2013-05-18 0:19 ` Idris Samawi Hamid ادريس سماوي حامد 0 siblings, 1 reply; 7+ messages in thread From: Hans Hagen @ 2013-05-17 23:55 UTC (permalink / raw) To: ntg-context On 5/15/2013 6:41 PM, Khaled Hosny wrote: > On Wed, May 15, 2013 at 08:51:28AM -0600, Idris Samawi Hamid ادريس سماوي حامد wrote: >> Hi Georg, >> >> On Wed, 15 May 2013 00:09:22 -0600, Georg Duffner >> <g.duffner@gmail.com> wrote: >> >>> I’d prefer to stay with the AFF syntax which is well established. >> >> I wonder if the latest, virtually frozen FontForge supports the >> current AFF syntax or still uses an earlier version. Before AFF was >> complete George added the missing functionality but Adobe did not >> accept his additions. The former luatex support was probably based >> on George's modifications to the AFF syntax. >> >> Hans and Taco know better, but I suppose a newer implementation of >> AFF in mkiv could be done in lua without touching the binary. > > Right, the version of FontForge included in LuaTeX uses the old syntax, > FontForge has dropped it for the new Adobe syntax for few years now, but > it didn’t make its way into LuaTeX. > > Regards, > Khaled > >> But anyway, this may very well be beyond Hans' current plans for >> font trickery, but it's fun to discuss possibilities. > > I think there is already some (not documented way) to achieve the same > effect in pure Lua code (Hans uses it to implement tlig and the likes). indeed. however the biggest challenge in patching a font runtime is where to inject the patches in the look up sequence ... 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] 7+ messages in thread
* Re: font trickery 2013-05-17 23:55 ` Hans Hagen @ 2013-05-18 0:19 ` Idris Samawi Hamid ادريس سماوي حامد 0 siblings, 0 replies; 7+ messages in thread From: Idris Samawi Hamid ادريس سماوي حامد @ 2013-05-18 0:19 UTC (permalink / raw) To: mailing list for ConTeXt users On Fri, 17 May 2013 17:55:10 -0600, Hans Hagen <pragma@wxs.nl> wrote: > indeed. however the biggest challenge in patching a font runtime is > where to inject the patches in the look up sequence ... Indeed, I was thinking exactly the same thing! It needs some thought... The simplest and safest idea may be to stack user-defined gsub lookups after, and only after, the gsub lookups in the font are complete. Ditto for gpos. Best wishes Idris -- Professor Idris Samawi Hamid 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 / 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] 7+ messages in thread
end of thread, other threads:[~2013-05-18 0:19 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-05-14 18:01 font trickery Hans Hagen 2013-05-14 22:51 ` Idris Samawi Hamid ادريس سماوي حامد 2013-05-15 6:09 ` Georg Duffner 2013-05-15 14:51 ` Idris Samawi Hamid ادريس سماوي حامد 2013-05-15 16:41 ` Khaled Hosny 2013-05-17 23:55 ` Hans Hagen 2013-05-18 0:19 ` Idris Samawi Hamid ادريس سماوي حامد
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