Re: explanation of I18N-ISSUE-190: attempting to erase combining marks?

Eric Prud'hommeaux, Tue, 2 Oct 2012 01:18:10 -0400:
> explanation of I18N-ISSUE-190: attempting to erase combining marks?
> ===============================================================
> 
> Issue: Section 6.4. PN_CHARS_BASE erases various Unicode ranges 
> without explanation. This appears to be an attempt to eliminate 
> combining marks and the surrogates?
> 
> Turtle's PN_CHARS_BASE
> 
<http://www.w3.org/rdf-clean/rdf-turtle/index.html#grammar-production-PN_CHARS_BASE>
> is derivative of XML's NameStartChar
> <http://www.w3.org/TR/2008/REC-xml-20081126/#NT-NameStartChar>,
> presumably leveraging the wisdom which went into XML

The wisdom expressed in the section you quote from XML only applies to 
documents with a document type declaration - also known as 'dtd':

http://www.w3.org/TR/2008/REC-xml-20081126/#dt-valid

Thus it only relates to XML documents that should be checked for 
validity constraints expressed in a DTD.

> identifiers. Changing this would have very large compatibility impact
> on SPARQL, RDF/XML, OWL's XML format, GRDDL, etc. Is there motivation
> to change XML?

Are there any of those that operates with validity constraints? At 
least RDF/XML does not, AFAIK.

> Please indicate whether this address the stated issue.

-- 
Leif Halvard Silli

Received on Tuesday, 2 October 2012 05:47:04 UTC