[vlc-devel] [PATCH] freetype: render Arabic diacritics properly

[Salah Shaaban]

I actually selected this range based on Arabic keyboards. If you look in
the unicode charts there are probably hundreds of such diacritics, most of
which I haven't even heard of :)
Some of them, I guess, are archaic. Others are used only in holy scriptures
(the Koran).
The Hamza on the other hand is so common it's actually not a diacritic on
keyboards, instead you find (Alef with Hamza above) and (Alef with Hamza
below) but it's actually a single character. You can't, say, delete the
Hamza and leave the Alef.

There is also another range much like the one I specified in the patch,
which is specified in the "Arabic Presentation Forms-B" unicode chart
(FE70–FEFF), it's redundant, and I haven't encountered any of its
characters so far. And there it says:

"Preferred characters are found in the Arabic block 0600 -
06FF. Some of these characters are used for Arabic
mathematics where contextual shape variations are
important semantically."

It's actually rather confusing.
The range specified in the patch seems to handle all subtitle files I find
on the Internet.




On Tue, Jan 6, 2015 at 3:30 PM, Jean-Baptiste Kempf <jb at videolan.org> wrote:

> On 06 Jan, Salah-Eddin Shaban wrote :
> > +/* These are the most common Arabic diacritics */
> > +#define DIACRITIC( a ) ( a >= 0x064B && a <= 0x0653 )
>
> Why not include 0x0654 (Hamza above) ?
>
> With my kindest regards,
>
> --
> Jean-Baptiste Kempf
> http://www.jbkempf.com/ - +33 672 704 734
> Sent from my Electronic Device
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