Re: [PATCH] Fix Relax-NG pattern matching

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On Fri, 2008-07-25 at 00:30 +0100, John Levon wrote:
> On Thu, Jul 24, 2008 at 03:26:21PM -0700, David Lutterkort wrote:
> 
> > > xenbld:virt-convert $ grep '<name>' suse.hvm.virt-image.xml 
> > >  <name>SUSE_Linux </name>
> > > xenbld:virt-convert $ xmllint --relaxng doc/image.rng suse.hvm.virt-image.xml 2>&1  | grep 'Error validating'
> > > xenbld:virt-convert $ vi doc/image.rng  # . -> \.
> > > xenbld:virt-convert $ xmllint --relaxng doc/image.rng
> > > suse.hvm.virt-image.xml 2>&1  | grep 'Error validating'
> > > suse.hvm.virt-image.xml:3: element name: Relax-NG validity error : Error validating datatype string
> > 
> > This is very weird. The image.rng that's upstream has genericName
> >           <define name='genericName'>
> >             <data type='string'>
> >               <param name="pattern">[A-Za-z0-9_.:/+-]+</param>
> >             </data>
> >           </define>
> > When I run 'xmllint --relaxng image.rng --noout image.xml' I do get a
> > validation failure when I put '<name>my vm</name>' in there.
> 
> Weird.
> 
> $ xmllint --version
> xmllint: using libxml version 20631
>    compiled with: Threads Tree Output Push Reader Patterns Writer SAXv1
> FTP HTTP DTDValid HTML Legacy C14N Catalog XPath XPointer XInclude Iconv
> ISO8859X Unicode Regexps Automata Expr Schemas Schematron Modules Debug
> Zlib 

xmllint: using libxml version 20632
   compiled with: Threads Tree Output Push Reader Patterns Writer SAXv1
FTP HTTP DTDValid HTML Legacy C14N Catalog XPath XPointer XInclude Iconv
ISO8859X Unicode Regexps Automata Expr Schemas Schematron Modules Debug
Zlib

http://xmlsoft.org/news.html lists a bugfix for 2.6.32 about "regexp bug
with '.' (Andrew Tosh)". The full entry from the ChangeLog is

        xmlregexp.c: apply patch from Andrew Tosh to fix behaviour
                  when '.' is used in a posCharGroup
        
That should explain the difference.

David


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