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From: "Gustaf Liljegren" <gustaf.liljegren@bredband.net>
> This wording makes me wonder if there is any case where a
non-deterministic
> content model would acctually be useful? That is, is the restriction a
> compromise, or can a non-deterministic content model always be simplified
> (like many algebraic expressions) to something shorter with the same
meaning?
No. The example usually trotted out is:
(a|b)*a(a|b)
This matches any sequence of two or more a's and b's with an a next to last.
Bob Foster
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