- From: C. M. Sperberg-McQueen <cmsmcq@blackmesatech.com>
- Date: Sun, 30 Jan 2022 09:36:58 -0700
- To: Bethan Tovey-Walsh <accounts@bethan.wales>
- Cc: Norm Tovey-Walsh <norm@saxonica.com>, public-ixml@w3.org
Bethan Tovey-Walsh writes: >> One snag in the rule suggested: if a pragma should not change the set of >> sentences recognized by a grammar, then doesn't a pragma meaning "reject >> input of length greater than n characters" fall on the wrong side of the >> line? Unless the grammar would in any case reject all such sentences, >> in which case why the pragma? > > When I wrote that suggestion, my idea was that one might know that > only a string of a certain length could match. ... > > Of course, such a pragma could also be used as you outlined, to add > additional constraints to the grammar. That would be non-conforming > behaviour, which is not to say that it couldn’t be useful or > reasonable in some contexts. Thank you for the answer. -- C. M. Sperberg-McQueen Black Mesa Technologies LLC http://blackmesatech.com
Received on Sunday, 30 January 2022 16:37:18 UTC