[XeTeX] new version of HarfBuzz

[maxwell]

On 2017-04-21 13:46, Jonathan Kew wrote:
> I believe that xetex should be unaffected by that bug, because that
> was an issue with the harfbuzz interface to graphite, but xetex uses
> graphite directly without going through the harfbuzz layer (provided
> you load the font with the /GR option, or whatever the fontspec
> equivalent of that is).

There is certainly a bug in the way certain sequences of characters are 
output by xe(la)tex.  Whether the bug is in xetex, or harfbuzz, or the 
font itself is beyond my ken.  Martin Hosken (who submitted the harfbuzz 
bug fix) seemed to think that would fix the issue in xetex, but I'm not 
sure he actually tested it with xetex, which I suppose would require 
re-compiling xetex.

I can supply a simple XeLaTeX file for testing; it requires having the 
Awami Nastaliq beta font from SIL.  I can also put you (or anyone else) 
in touch with the other developers of that font, although I suppose 
Martin is the expert on this issue.

I can also take this off-line if that would be more appropriate.

    Mike Maxwell