> I know the definition for the IPA environment isn't correct; what I want
> is characters inside that environment to be interpreted in the same way
> that they are within the \textipa command provided by xunicode.
What you want is a mapping from tipa's transliteration system to the
corresponding Unicode values for IPA characters; you can do that with
TECkit: it generates a file that XeTeX knows how to use.
Arthur
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