[buug] TeX transliteration macro

[Ian Zimmerman]

OK, here's one for the TeXperts on the list (we know who you are, you
have unmasked yourselves :)  I need a macro that would act as (the
simplest case) of the Unix program tr.  Something like this:

\tr{foo_bar}{_}{-}

should produce

foo-bar

Background:

I automatically produce cross-referenced documentation from code.
Code symbols are targets of links, and contain underscores.  TeX
labels of all kinds (plain LaTeX, hyperref, ...) can't contain
underscores, but can contain hyphens.

-- 
Ian Zimmerman, Oakland, California, U.S.A. I did not vote for Emperor Bush.
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