[XeTeX] openType and xetex

[Zdenek Wagner]

2012/6/26 Khaled Hosny <khaledhosny at eglug.org>:
> On Tue, Jun 26, 2012 at 09:29:32AM +0100, Youcef Mohammed wrote:
>> Khaled
>> thank you for your interest...
>> the attached tex file is compiled with xelatex... the font used is
>> "UthmanicHafs1 Ver09.otf" from KFGQPC (مجمّع الملك فهد لطباعة المصحف
>> الشريف).
>> you can see that the marks are not correctly positionned...
>> i don't suspect the font because all is perfectly done by Windows Word
>> and OpenOffice...
>> Luatex makes this differently but marks are also "mal positionnés"...
>> where is the problem???
>> thanks again for your interest...
>
> Looks like a bug with the ICU layout engine[1] used by XeTeX, which we
> don't control.
>
We do. Just the last week Peter Breitenlohner fixed an ICU bug for
Devanagari and (hopefully) reported it upstream. So if you know what
should be fixed, XeTeX may have the fixed version even before it is
fixed upstream.

> [1] http://userguide.icu-project.org/layoutengine
>
> Regards,
>  Khaled
>
> PS. Funnily, all the three layout engines used by XeTeX are now
> unmaintained, deprecated or both...
>
>
>
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-- 
Zdeněk Wagner
http://hroch486.icpf.cas.cz/wagner/
http://icebearsoft.euweb.cz