bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear

[Kenichi Handa]

In article <83sjb1g7yl.fsf@gnu.org>, Eli Zaretskii <eliz@gnu.org> writes:

> The problem was that the code I committed didn't expect to handle more
> than a single grapheme cluster.  I now fixed that code for the case of
> several grapheme clusters that are handed to the shaper all at once.
> With the modified code (trunk revision 109842), both Steffan's recipe
> and the check-arabic-shaper function work correctly.  Please test.

I tested with this version:

  http://alpha.gnu.org/gnu/emacs/windows/emacs-20120903-r109861-bin-i386.zip

and confirmed that the problem was fixed.  The Arabic line
of HELLO file is also displayed correctly.  By the way, it
seems that "arial" font has better OTF GPOS feautre for
Arabic than the default font "courier new".

Try to evaluate this on Windows:
  (set-fontset-font t 'arabic (font-spec :family "arial" :size 30))
and see the position of upper vowels.

---
Kenichi Handa
handa@gnu.org