[XeTeX] Incorrect rendering of Vedic Sanskrit accents

[Stephen Moye]

Atta boy! You tell 'em! Take THAT!

SGM



> On May 22, 2015, at 4:37 PM, David M. Jones <dmj at dmj.ams.org> wrote:
> 
>> Date: Fri, 22 May 2015 17:18:34 +0200
>> From: Zdenek Wagner <zdenek.wagner at gmail.com>
>> 
>> Hi David,
>> 
>> as far as I understand rendering Devanagari fonts, this is handled by
>> the GPOS tables. I would therefore suspect a bug in the font that
>> should be reported to the font desogner.
> 
> The fact that luaTeX renders the examples correctly would seem to rule
> that out.  But no, switching fonts doesn't change the basic behaviour.
> 
> David.
> 
>> I do not know Snaskrit, I am
>> not able to judge whether the positions of Vedic accents are correct
>> or not. Could you try the same sample with other Devanagari fonts and
>> see what happends?
>> Zdeněk Wagner
>> http://hroch486.icpf.cas.cz/wagner/
>> http://icebearsoft.euweb.cz
>> 
>> 
>> 2015-05-22 16:14 GMT+02:00 David M. Jones <dmj at dmj.ams.org>:
>>> I posted this to the XeTeX sourceforge tracker a couple of weeks ago,
>>> and it was suggested that I also mention it here.  The sourceforge
>>> ticket is
>>> 
>>>    https://sourceforge.net/p/xetex/bugs/111/
>>> 
>>> and the zip file is
>>> 
>>>    https://sourceforge.net/p/xetex/bugs/111/attachment/xetex-indic-bug.zip
>>> 
>>> Cheers,
>>> David.
>>> 
>>> P.S. There's actually a third class of bug that is clearly visible in
>>> the table at the top of my document, but which I didn't mention
>>> explicitly: XeTeX won't typeset one of the Devanagari combining
>>> characters in isolation without adding a prothetic dotted circle
>>> (U+25CC).
>>> 
>>> ===========================================================================
>>> 
>>> On a lark, I've been experimenting with typesetting Vedic Sanskrit,
>>> specifically verses from the Ṛg-Veda, using the Murty Hindi font from
>>> Tiro Typeworks.  So far, XeTeX works beautifully, with two exceptions
>>> involving the Vedic udatta and anudatta accent marks:
>>> 
>>> a) They don't attach properly to the Devanagari digits 1 and 3, and
>>> 
>>> b) They don't combine properly with the candrabindu, anusvara, and
>>>   visarga signs.
>>> 
>>> luaTeX does render these correctly, so it doesn't appear to be a
>>> problem with the font itself.
>>> 
>>> I've included a zip file with a test file and sample output from
>>> luaTeX and XeTeX.
>>> 
>>> Is this a bug, or am I missing something obvious?
>>> 
>>> 
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