Hi!
Im currently facing difficulties validating a simple xml document against a very simple schema. The small document: <?xml version="1.0" encoding="UTF-8"?> <root></root> does not validate against: <?xml version="1.0" encoding="UTF-8"?> <schema xmlns="http://www.w3.org/2001/XMLSchema"> <element name="root"> <simpleType> <restriction base="string"> <pattern value="-?[0-9]{0,10}"></pattern> </restriction> </simpleType> </element> </schema> but does validate against: <?xml version="1.0" encoding="UTF-8"?> <schema xmlns="http://www.w3.org/2001/XMLSchema"> <element name="root"> <simpleType> <restriction base="string"> <pattern value="-{0,1}[0-9]{0,10}"></pattern> </restriction> </simpleType> </element> </schema> The error message from xmllint is as follows: <?xml version="1.0" encoding="UTF-8"?> <root/> dummy.xml:2: element root: Schemas validity error : Element 'root': [facet 'pattern'] The value '' is not accepted by the pattern '-?[0-9]{0,10}'. dummy.xml:2: element root: Schemas validity error : Element 'root': '' is not a valid value of the local atomic type. dummy.xml fails to validate Tested on Windows 2008 using the binaries linked in the libxml web page (version 2.7.8). When tested on Eclipse Indigo the xml document validates using both schemas. To my mind "?" and "{0,1}" should be equivalent. I searched the docs but found no specific details about which parts of the schema standard is supported. There seems to be no (confirmed) open bugs about quantifiers either. Am I getting something terribly wrong here? The "?" quantifier does work, e.g. accepts "1234" and "-1234", it just refuses to accept an empty string in total. Any help is appreciated! Greeting, scope _______________________________________________ xml mailing list, project page http://xmlsoft.org/ xml@gnome.org http://mail.gnome.org/mailman/listinfo/xml