[HarfBuzz] Overlap of vocal with thai text

[Werner LEMBERG]

>>> I also see that freetype is required by Qt and this call some
>>> functionality of harfbuzz to render thai fonts correctly.
>>
>> ???
>
> Does Qt uses the freetype libraries (libfreetype.so).  If yes can I
> build freetype --with-harbuzz so that Qt will use harfbuzz-0.9.38.
> Is this a correct way?

No.  FreeType itself uses only a limited set of HarfBuzz functionality
to improve auto-hinting of various scripts.  It is *not* related to
the shaping engine of HarfBuzz, which must be
activated/updated/etc. directly in Qt.


    Werner