[XeTeX] accessing fonts from TeX tree and glyphs without Unicode slot

[Arthur Reutenauer]

> PUA codepoints are no less portable than glyph names.

  By the way, do you know of any standardization that has been made for
PUA codepoints? I noticed, for example, that FontForge shows many of the
code points as being represented by particular glyphs (in the title
area of the character, like it does for non-private code points; for
example, the glyph for U+0041 is shown with an 'A' in the title area,
etc.); arabic glyphs, starting from U+E600, or devanagari, starting from
U+E900. Maybe you can answer off-list, since the topic really has little
to do with XeTeX now.

	Arthur