xml-dev - Too much latitude in Nmtoken characters?

[Eric Baatz - Sun Microsystems Labs BOS <ebaatz@barbaresco.East.Sun.COM>]

I don't understand why such a wide choice of characters are allowed in
in the June XML Syntax specification.

  [7] Nmtoken ::= (NameChar)+
  
Because

  [4] NameChar ::= Letter | Digit | MiscName
  [3] MiscName ::= '.' | '-' | '_' | ':' | CombiningChar | Ignorable | Extender
  [87] Ignorable ::= a whole bunch of characters like "zero width non-joiner",
                     "right-to-left mark", and "zero width no-break space"
                     
This seems to allow Nmtokens that aren't visible to the human eye,
for example, consisting of a single zero width non-joiner.

My limited understanding of SGML suggests that a Nmtoken is more like
a Name rather than a superset of it.  For that matter, is "9" a sensible
Nmtoken?


xml-dev: A list for W3C XML Developers
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/
To unsubscribe, send to majordomo@ic.ac.uk the following message;
unsubscribe xml-dev
List coordinator, Henry Rzepa (rzepa@ic.ac.uk)