On 5/9/2013 9:45 AM, "H. Özoguz" wrote:

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The font is fine with other OpenType engines as well, e.g. HarfBuzz, so it is probably a ConTeXt issue.

Yes, the font is fine with OpenOffice, too. It would be really great, if this could be fixed in context, so one could typeset quran (and other traditional arabic) professionally. Would be very valuable!

I uploaded a beta that might fix it, but it needs more testing. The issue might have been introduced when support was added for more complex ligature building, compare for instance this: \starttext \def\sample{نَسْتَعِينُ وَلَا الضَّالِّينَ} \def\sample{نَسْتَعِينُ} \def\sample{\Uchar"0643\Uchar"0644\Uchar"0651\Uchar"0627\Uchar"064E} \setvariables [otftracker] [font=file:uthmantn1ver10.ttf, size=24pt, features=arabic, direction=-1, title=Feature Check, sample=\sample] \page \setvariables [otftracker] [font=file:arabtype, size=24pt, features=arabic, direction=-1, title=Feature Check, sample=\sample] \stoptext (So Kai needs to run some of his tests.) Hans ps. some of the somewhat complex implementation will be redone when we have a pending extension to glyph nodes in the engine done. ----------------------------------------------------------------- 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 -----------------------------------------------------------------