[texhax] xetex: using fonts with missing glyphs

[Susan Dittmar]

Hi folks,

I just did my first steps with xelatex and immediately ran into a problem.
I would like to use a font which has only a very sparse set of glyphs. Even
comma and fullstop are missing.

Is there an easy way to tell xelatex which font to use as fallback for
missing glyphs? (This is for glyphs that are missing completely, like the
comma.)

Is there an easy way to tell xelatex on a case-by-case basis which
glyph (or combination of glyphs) to use for a special missing glyph? (This
is for glyphs that can be replaced by existing glyphs.)

Thanks for any help,

	Susan