[Webkit-unassigned] [Bug 13572] Arabic characters are not correctly joined when using Arial

[bugzilla-daemon at webkit.org]

http://bugs.webkit.org/show_bug.cgi?id=13572





------- Comment #5 from mitz at webkit.org  2007-05-03 04:21 PDT -------
OK, so that page and the test cases are in the Arabic script, but not in the
Arabic language. The page is quite evidently in Pashto. The non-Arabic
characters' contextual forms reside in the Arabic Presentation Forms-A block
(U+FB50..U+FDFF), whereas Arabic characters' contextual forms are in Arabic
Presentation Forms-B (U+FE70..U+FEFF).

ICU's u_shapeArabic doesn't shape the non-Arabic characters, so they get no
shaping in fonts where WebKit relies on ICU for that. However, ICU does have
the linking type of those characters (left, right, both, none), so I think it
might be possible to patch ICU and add the pointers to the contextual forms.


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