Re: conformance and datatype libraries

... And while discussing it is beyond the scope of relaxng-user, my feeling
is a datatype library that checks for ordering and value space constraints
is a mesalliance for Relax NG. One does not expect to provide ordering
constraints for

 <date>
   <year>2004</year>
   <month>01</month>
   <day>12</day>
 </date>

Why should one use them for date="2004/01/12" ?

Instead, adding one parameter to built-in datatypes, namely 'pattern' with regular
expressions with interleave (and forgetting about pluggable datatype libraries), 
would do much more for convenience of use of Relax NG.  And deprecating 'list',
which I don't mind having, but it is a hack.

David Tolpin
http://davidashen.net/