Per Bothner scripsit:

> That seems reasonable.  I think we might want to allow
> hyphens and underscores; haven't checked their categories,

Yes, I suppose so.  XML special-cases hyphen, underscore, dot, and U+00B7,
the middle dot (which cannot be initial); also colon, of course.

--
John Cowan   http://ccil.org/~cowan    xxxxxx@ccil.org
We want more school houses and less jails; more books and less arsenals;
more learning and less vice; more constant work and less crime; more
leisure and less greed; more justice and less revenge; in fact, more of
the opportunities to cultivate our better natures.  --Samuel Gompers