- From: Arnold, Curt <Curt.Arnold@hyprotech.com>
- Date: Thu, 9 Dec 1999 11:02:53 -0700
- To: "'www-svg@w3.org'" <www-svg@w3.org>
> I've posted two comments > (http://lists.w3.org/Archives/Public/www-xml-schema-comments/1999OctDec/00 > 38.html and > http://lists.w3.org/Archives/Public/www-xml-schema-comments/1999OctDec/003 > 9.html) on the XML Schema comments mailing list when combined would allow > schema compliant parsers to validate the path data attributes (among many > other constructs). > > That is that the parser would be able to detect that > > <path d="M 100 100 L 140 100 L 120 140 z"/> > > is valid and > > <path d="M 100 L 140 100 L 120 140 z"/> > > is invalid. > > However, this requires that the schema workgroup support the concept of a > list datatype or qualifer which the working group has rejected as outside > of their goals for the first public release (see > http://lists.w3.org/Archives/Public/www-xml-schema-comments/1999OctDec/001 > 5.html). However, the concept of list datatypes appears not only in SVG, > but also appears in XSLT and in XML 1.0. The lists in XML 1.0 are > supported by "special" legacy types IDREFS and NMTOKENS. Having a > generalized support for list seems more simple than supporting IDREFS and > NMTOKENS but discouraging their use. I believe that the proposals in the > comments are reasonable, generally useful and easy to implement. > > In the spirit of Tim Berners-Lee "Schemas coming of age" message > http://www.lists.ic.ac.uk/hypermail/xml-dev/xml-dev-Nov-1999/0247.html), > I'd urge you to consider the benefits of a more complete validation of SVG > and work across the group boundaries to get it fixed. > > At the present time, the Schema group is under deadline to produce the > next public draft (due December 16th). After that document is released > (or based on interim versions that you may have), I'd suggest that a group > attempt to craft an XML Schema for SVG and strongly lobby for appropriate > enhancements that would greatly improved the effectiveness of schema > validation.
Received on Thursday, 9 December 1999 13:05:23 UTC