[DFDL-WG] How to parse an email address

[Garriss Jr., James P.]

Suppose I want to model an email address:

  dfdl-wg at ogf.org

It's a sequence of a string, an a character (@), and a string.

In the MBTK it might look like this:

[cid:image001.png at 01CE10EC.6600AE50]

The problem, of course, is that the parser will grab all of "dfdl-wg at ogf.org" instead of just "dfdl-wg".  Setting validation facets doesn't help, b/c validation happens after parsing.  Setting @ as a separator or terminator would work, but that doesn't seem right either, as the @ is part of the email address, and I would want to keep it in the infoset.

How do I think about this problem?

TIA
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