On 7/10/13 14:00, Lorna Evans wrote:
I've been looking at this. We do have language support in both OpenType
and Graphite in Scheherazade. However, as I've looked at the
documentation for XeTeX I see no mention of how to choose a language in
Graphite, only in OpenType. So maybe using a language isn't supported in
XeTeX Graphite?
I *think* it should be supported via the "language=...." pseudo-feature
in the \font command, but I haven't specifically checked.
However, note that language support in Graphite is based on ISO-639
codes, while OpenType uses its own set of "language system" tags (see
the Microsoft tag registry), which may or may not bear any resemblance
to the ISO codes. Hence, it seems likely that you'd need to use
different tags if switching between Graphite and OpenType; the same tag
may not necessarily work across both renderers.
JK
If that's the case, then you need to turn on the
specific features required for a particular language. So, if you want to
use Sindhi features you'll have to turn on Sindhi-style Meem,
Sindhi-style Heh, and Sindhi-style Eastern digits.
AFAIK, Scheherazade 1.005 wasn't a Graphite font so I don't understand
what you were seeing there.
Lorna
-------- Original Message --------
Subject: Re: [XeTeX] XeLaTeX not using language-specific glyphs with
Scheherazade 2.x
From: Lammert, Richard
To: XeTeX (Unicode-based TeX) discussion.
Date: 10/7/2013 2:36 PM
Thanks, Khaled. I had wondered about this--which is why I specifically
chose the Graphite renderer in the font selection. (According to the
"Font Features for Scheherazade 2.000" on the SIL web site, both the
language selection and the meem/heh shaping should work in either
OpenType or Graphite. Rohingya is available as a language selection
only in Graphite--but fontspec doesn't recognize the language.)
Is there a reason a hybrid font wouldn't work properly if a specific
rendering technology is chosen? (Specifically selecting the renderer
worked great in solving my small-caps problem.)
Richard
On Mon, Oct 7, 2013 at 12:48 PM, Khaled Hosny <khaledho...@eglug.org
<mailto:khaledho...@eglug.org>> wrote:
On Sat, Oct 05, 2013 at 04:25:52PM -0400, Lammert, Richard wrote:
> (Sorry about that empty message with one attachment--clicked the
wrong
> button.)
>
> The following example attempts to use language-specific glyphs from
> Scheherazade, but does not work with Scheherazade 2.0 or 2.01.
The example
> *does* work with Scheherazade 1.005 (see attachments
arabic-test-1.005.pdf
> and arabic-test-2.01.pdf)
>
> However, when I use TypeTuner to produce language-specific fonts
for each
> of the three languages (last three lines of each test file), XeLaTeX
> properly shows the correct contextual forms. Since XeLaTeX reads
the glyphs
> properly from the tuned fonts, it appears to me that the language
> information is not being interpreted properly in the base font.
I am using
> XeLaTeX 0.9999.3, fontspec v. 2.3c, and bidi v14 on an iMac.
It seems that Scheherazade ≥ 1.900 is a hybrid OpenType/Graphite font,
so this is the same issue as:
http://tug.org/pipermail/xetex/2013-June/024530.html
(This will be fixed in next year’s version of XeTeX, the workaround in
the above link can be used in the meantime.)
Regards,
Khaled
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