[HarfBuzz] I wonder why glyph 'uni0647' is not substituted with the one at 0xFEE9('uni06BE.fina') in Tahoma font

[Su Scott]

Dear Jonathan,

OK, let me explain...My seeing is like output.png which I attached, 
If you compare output.png (wrong) with msword.png (correct)you'll see the 1st medial U+0647 should NOT be in the final form and the 2nd medial U+0647 should NOT be in the initial form as output.png show.
Hope you get what I meant. Thank you.

Scott  


> Date: Tue, 17 Sep 2013 11:09:09 +0100
> From: jfkthame at googlemail.com
> To: harfbuzz at lists.freedesktop.org
> Subject: Re: [HarfBuzz] I wonder why glyph 'uni0647' is not substituted with the one at 0xFEE9('uni06BE.fina') in Tahoma font
> 
> It's not really clear to me what you're asking or expecting. There are 
> several instances of U+0647 in your string.... looks like they should be 
> one initial, two medial and one final.
> 
> What exact version of harfbuzz and of tahoma is involved? The result I'm 
> seeing here matches your MSWord image. That's correct, isn't it?
> 
> 
> On 17/9/13 10:43, Su Scott wrote:
>  > Sorry, forget to attach pics just now.
>  > ......................................................
>  >
>  > I tested /harfbuzz.ng by a sample /string: "همهٔهمهٔ"
>  > string = L"\u0647\u0645\u0647\u0654\u0647\u0645\u0647\u0654";
>  >
>  > a sample pic by MS Word and an output file both in the attachment...
>  >
>  > I wonder why glyph 'uni0647' is not substituted with the one at
>  > 0xFEE9('uni06BE.fina') in Tahoma font
>  >
>  > 
> ................................................................................................................
>  >
>  >     /one mapping record of shaping table in harfbuzz.ng :/
>  >     /{0xFEEB, 0xFEEC, 0xFEEA, 0xFEE9}, /* U+0647 ARABIC LETTER HEH *//
>  >
>  >     /in GSUB Table :/
>  >     /<Substitution in="uni0647" out="uni06BE.fina"/> /
>  >
>  > 
> ................................................................................................................
>  >
>  > Many Thanks if any clues to fix it.
>  >
>  > Scott
>  >
>  >
>  >
>  >
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