ebnf2re yacker extension

Hi Eric,

  http://lists.w3.org/Archives/Public/www-archive/2006Jan/0004.html --
could you have a look at that? I think yacker should support something
like this and you are more likely to fix the outstanding issues than I.
I'd like something simple like `yacker ebnf --regex[=start-symbol]`
which should print the regular expression to stdout. I want this in
particular to aid advanced XML schema development for the W3C Markup
Validator, which will likely have regular expression support at some
point but probably not for arbitrary EBNF... Let me know what you think
(in particular when you are done coding... ;-)

Thanks,
-- 
Björn Höhrmann · mailto:bjoern@hoehrmann.de · http://bjoern.hoehrmann.de
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