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- From: John Cowan <cowan@locke.ccil.org>
- To: XML Dev <xml-dev@ic.ac.uk>
- Date: Thu, 13 May 1999 16:40:13 -0400
roddey@us.ibm.com wrote:
> What are the feelings of some folks who implemented SGML validators? If you had
> to start with that and add NtoM repetition on top of that, where would that have
> taken you? Or did SGML already provide both of these things? If so, what was the
> general architecture used in some common ones? Why is the sky blue?
IIRC the canonical way of doing (A & B & C) is to transform it
into (A | B | C)* and then do a post-check that each of A, B, C
appears exactly once. As opposed to brute-force expansion into a
DFA.
--
John Cowan http://www.ccil.org/~cowan cowan@ccil.org
You tollerday donsk? N. You tolkatiff scowegian? Nn.
You spigotty anglease? Nnn. You phonio saxo? Nnnn.
Clear all so! 'Tis a Jute.... (Finnegans Wake 16.5)
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