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<body class='hmmessage'><div dir='ltr'><font style="" color="#D24726" face="Verdana"><font style="font-size: 10pt;" size="2">Thank you so much for the detail testing.<br>It proves my result</font></font><font style="font-size:10pt;" face="Verdana" size="2"> is wrong.<br>Hope I dig the reason out soon.<br></font><font style="font-size:10pt;" face="Verdana" size="2"><br>^ ^<br><br></font><font style="font-size:10pt;" face="Verdana" size="2">
Scott </font><br><br><br><div><hr id="stopSpelling">Date: Wed, 18 Sep 2013 09:14:21 +0100<br>From: graham.douglas@readytext.co.uk<br>To: harfbuzz@lists.freedesktop.org<br>CC: coolscott@hotmail.com<br>Subject: Re: [HarfBuzz] I wonder why glyph 'uni0647' is not substituted with the one at 0xFEE9('uni06BE.fina') in Tahoma font<br><br>
<div class="ecxmoz-cite-prefix">On 17/09/2013 10:42, Su Scott wrote:<br>
</div>
<blockquote cite="mid:BLU173-W41316F2ECAB08D69B2A58FBF270@phx.gbl">
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<div dir="ltr"><font style="" face="Verdana"><font style="" face="Verdana">I tested </font></font><font style="" face="Verdana"><font style="" face="Verdana"><i><font style="" face="Verdana">harfbuzz.ng by a sample </font></i>string:
"همهٔهمهٔ"</font><font style="" face="Verdana"> <br>
</font><font style="" face="Verdana">string =
L"\u0647\u0645\u0647\u0654\u0647\u0645\u0647\u0654"; </font><font style="" face="Verdana"><br>
</font><font style="" face="Verdana"><br>
</font><font style="" face="Verdana">a sample pic by MS Word
and an output file both in the attachment...</font><font style="" face="Verdana"><br>
<br>
</font>I wonder why glyph 'uni0647' is not substituted with
the one at 0xFEE9('uni06BE.fina') in Tahoma font</font><font style="" face="Verdana"><br>
</font><br>
<font style="" face="Verdana">........................................................</font><font style="" face="Verdana">........................................................</font>
<blockquote><i><font style="" face="Verdana">one mapping record
of shaping table in harfbuzz.ng :</font></i><br>
<i><font style="" face="Verdana">{0xFEEB, 0xFEEC, 0xFEEA,
0xFEE9}, /* U+0647 ARABIC LETTER HEH */</font></i><br>
<br>
<i><font style="" face="Verdana">in GSUB Table :</font></i><br>
<i><font style="" face="Verdana"><Substitution in="uni0647"
out="uni06BE.fina"/> </font></i><br>
</blockquote>
<font style="" face="Verdana">........................................................</font><font style="" face="Verdana">........................................................</font><br>
<br>
<font style="" face="Verdana">Many Thanks if any clues to fix
it.</font><font style="" face="Verdana"><br>
<br>
</font><font style="" face="Verdana">Scott</font><font style="" face="Verdana"><br>
</font><font style="" face="Verdana"><br>
</font><font style="" face="Verdana"><br>
</font> </div>
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</pre>
</blockquote>
<br>
Hello Scott<br>
<br>
Using my personal build of HarfBuzz [HB_VERSION_STRING "0.9.16"]<br>
<br>
--- built as a .lib with Visual Studio 2008<br>
[I have not compiled it with ICU support] <br>
<br>
--- running under Windows 7 Ultimate 64-bit <br>
--- tahoma.ttf version 3.011 (as reported by FontLab Studio) <br>
<br>
I ran your sample string through HarfBuzz and saw the following
list of glyphs <br>
returned by Harfbuzz with names as reported using FreeType's
FT_Get_Glyph_Name(...) function<br>
<br>
uni0654<br>
uni0647.fina<br>
uni0645.medi<br>
uni06BE.fina<br>
uni0654<br>
uni06BE.fina<br>
uni0645.medi<br>
uni06BE<br>
<br>
Just an observation that the glyph uni0654 is classified as a mark
but it has (in the above version of Tahoma) a non-zero width of 512
em-units --- not zero, like most Arabic mark glyphs. <br>
<br>
Best<br>
Graham<br>
<br>
NB: Just for completeness, I'm using/testing HarfBuzz with Lua as an
add-in for LuaTeX.<br>
<br>
<br>
<br>
<br>
<br>
<br>
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