[XeTeX] rendering of U+0903

[Arthur Reutenauer]

> The problem is that AFAIK the Indic scripts are not yet implemented in
> luatex.

  Actually it is, at least for Devanagari.  This is fairly recent (2-3
years).

>         The dotted ring is not a part of the glyph. the Unicode shaper
> (HarfBuzz in XeTeX) knows that visarga is a dependent vowel (matra) and
> since a consonant is missing, it takes the dotted ring from the font (it
> should exist as a glyph per Microsoft's recommendation).

  That's interesting, thanks for the explanation.  But Manfred doesn't
want LuaTeX to produce the same output as XeTeX, he wants it the other
way round.  What you're saying implies that it's not really possible
with a conformant font.

> I have quite a lot of texts in Hindi, if you develop such a shaper in lua,
> I can offer testing.

  You should get in touch with Hans and others on the ConTeXt list.

	Arthur