Re: [XeTeX] Graphite font feature changes in Gentium Plus and XeTeX
On Sun, Jan 06, 2013 at 09:53:50AM -0500, Alan Munn wrote:
> On Jan 6, 2013, at 4:53 AM, Khaled Hosny wrote:
>
> > On Sat, Jan 05, 2013 at 05:13:56PM -0500, Alan Munn wrote:
> >> Hi everyone.
> >>
> >> The most recent version of the Gentium font
> >> http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=Gentium_download
> >> has changed from numeric feature IDs to alpha feature IDs. However,
> >> XeTeX does not seem to be able to deal with the new alpha IDs, instead
> >> converts them into huge numeric IDs instead.
> >>
> >> Attached is a modified version of aat-info.tex adjusted to show use
> >> the Graphite renderer. When run with the old version of Gentium Plus
> >> (1.504) it correctly reports the 4 digit ID codes. For example, the
> >> low profile diacritics ID used to be 1054.
> >>
> >> When run with the new version of Gentium (1.510) it reports different
> >> numbers. Now the low profile diacritic ID should be 'lopr' but XeTeX
> >> thinks it's 1819242610.
> >
> > The alpha numeric features id are represented internally as unsigned
> > integers, is 1819242610 is (('l'<<24)|('o'<<16)|('p'<<8)|'r'), and since
> > such tags were not used when XeTeX got its Graphite support, it simply
> > returns the integer value.
>
> Hi Khaled, that's what I suspected.
>
> >
> > You can simply access Graphite features by their labels in this case:
> >
> > \font\lowfont="Gentium Plus/GR:Low-profile diacritics=1"
>
> That doesn't seem to work, however:
Sorry it should be “True” not “1” or whatever the string printed by
\XeTeXselectorname. BTW, the Gentium Plus documentation suggests “High
angle” and “Low angle”, but that is incorrect.
Development version of XeTeX already supports alpha numeric tags for
Graphite, and they are treated like OpenType tags. But I’m not sure how
to handle the \XeTeXfeaturecode here, may be it is possible to convert
the integer tag to string with some black TeX macro magic, but I
wouldn’t know.
Regards,
Khaled
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Re: [XeTeX] Graphite font feature changes in Gentium Plus and XeTeX
On Jan 6, 2013, at 4:53 AM, Khaled Hosny wrote:
> On Sat, Jan 05, 2013 at 05:13:56PM -0500, Alan Munn wrote:
>> Hi everyone.
>>
>> The most recent version of the Gentium font
>> http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=Gentium_download
>> has changed from numeric feature IDs to alpha feature IDs. However,
>> XeTeX does not seem to be able to deal with the new alpha IDs, instead
>> converts them into huge numeric IDs instead.
>>
>> Attached is a modified version of aat-info.tex adjusted to show use
>> the Graphite renderer. When run with the old version of Gentium Plus
>> (1.504) it correctly reports the 4 digit ID codes. For example, the
>> low profile diacritics ID used to be 1054.
>>
>> When run with the new version of Gentium (1.510) it reports different
>> numbers. Now the low profile diacritic ID should be 'lopr' but XeTeX
>> thinks it's 1819242610.
>
> The alpha numeric features id are represented internally as unsigned
> integers, is 1819242610 is (('l'<<24)|('o'<<16)|('p'<<8)|'r'), and since
> such tags were not used when XeTeX got its Graphite support, it simply
> returns the integer value.
Hi Khaled, that's what I suspected.
>
> You can simply access Graphite features by their labels in this case:
>
> \font\lowfont="Gentium Plus/GR:Low-profile diacritics=1"
That doesn't seem to work, however:
% !TEX TS-program = XeTeX
% This document assumes version 1.510 of Gentium Plus
% This command should work, but doesn't
\font\lowalpha="Gentium Plus/GR:Low-profile diacritics=1" at 12 pt
% These commands work instead
\font\lowfont="Gentium Plus/GR:1819242610=1" at 12 pt
\font\regfont="Gentium Plus/GR:1819242610=0" at 12 pt
\lowalpha má \qquad should have low profile diacritic
\lowfont má \qquad has low profile diacritic
\regfont má \qquad has regular profile diacritic
\bye
Alan
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Alan Munn
am...@gmx.com
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Re: [XeTeX] Graphite font feature changes in Gentium Plus and XeTeX
On Sat, Jan 05, 2013 at 05:13:56PM -0500, Alan Munn wrote:
> Hi everyone.
>
> The most recent version of the Gentium font
> http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=Gentium_download
> has changed from numeric feature IDs to alpha feature IDs. However,
> XeTeX does not seem to be able to deal with the new alpha IDs, instead
> converts them into huge numeric IDs instead.
>
> Attached is a modified version of aat-info.tex adjusted to show use
> the Graphite renderer. When run with the old version of Gentium Plus
> (1.504) it correctly reports the 4 digit ID codes. For example, the
> low profile diacritics ID used to be 1054.
>
> When run with the new version of Gentium (1.510) it reports different
> numbers. Now the low profile diacritic ID should be 'lopr' but XeTeX
> thinks it's 1819242610.
The alpha numeric features id are represented internally as unsigned
integers, is 1819242610 is (('l'<<24)|('o'<<16)|('p'<<8)|'r'), and since
such tags were not used when XeTeX got its Graphite support, it simply
returns the integer value.
You can simply access Graphite features by their labels in this case:
\font\lowfont="Gentium Plus/GR:Low-profile diacritics=1"
This will, hopefully, be fixed for next XeTeX.
Regards,
Khaled
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[XeTeX] Graphite font feature changes in Gentium Plus and XeTeX
Hi everyone. The most recent version of the Gentium font http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=Gentium_download has changed from numeric feature IDs to alpha feature IDs. However, XeTeX does not seem to be able to deal with the new alpha IDs, instead converts them into huge numeric IDs instead. Attached is a modified version of aat-info.tex adjusted to show use the Graphite renderer. When run with the old version of Gentium Plus (1.504) it correctly reports the 4 digit ID codes. For example, the low profile diacritics ID used to be 1054. When run with the new version of Gentium (1.510) it reports different numbers. Now the low profile diacritic ID should be 'lopr' but XeTeX thinks it's 1819242610. For sample images of the output see this StackExchange question where the issue was first raised: http://tex.stackexchange.com/q/89352/2693 Here's a small plain TeX document which shows that the new numbers are accessible, but the alpha codes are not: (I've done this in plain TeX because of a current bug in fontspec that makes the Graphite renderer inaccessible.) -Alan % !TEX TS-program = XeTeX % This document assumes version 1.510 of Gentium Plus % This command should work, but doesn't \font\lowalpha="Gentium Plus/GR:lopr=1" at 12 pt % These commands work instead \font\lowfont="Gentium Plus/GR:1819242610=1" at 12 pt \font\regfont="Gentium Plus/GR:1819242610=0" at 12 pt \lowalpha má \qquad should have low profile diacritic \lowfont má \qquad has low profile diacritic \regfont má \qquad has regular profile diacritic \bye graphite-info.tex Description: Binary data -- Alan Munn am...@gmx.com -- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex
