[XeTeX] XeLaTeX not using language-specific glyphs with Scheherazade 2.x

[Khaled Hosny]

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