From: Bob_Hallissy@sil.org
Date: Wed May 02 2007 - 10:20:58 CST
Andreas wrote on 02/05/2007 16:29:02:
> However, the practice seems to be quite different.
> The other typefaces show the joining of lam and alif
> but no ligature.
Lam-alef ligature is always required. Typefaces that fail to show the
ligature if there is a combining mark between are not correct. Most likely
the designers were not anticipating combining mark on the lam.
> What is the general situation? In Windows Vista?
The correct rendering is a cooperative effort between Uniscribe and the
OpenType tables in the font. Uniscribe in Vista is fully capable of
handling lam-mark-alef if the font is implemented correctly.
The fonts at http://scripts.sil.org/arabicfonts will handle this case.
> Should we omit any mark between lam and alif
> for the time being?
No -- you should handle it properly.
Bob
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