Thanks for the answer, indeed the ':' is not allowed in an ID. It is all quite confusing all those definitions
Best Regards, Albert <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free. www.avg.com <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Fri, Jan 18, 2019 at 10:05 AM Hussein Shafie <huss...@xmlmind.com> wrote: > On 01/17/2019 02:11 PM, Albert wrote: > > > > When I use the attached xml file in xmlmind I get the warning: > > [2] <1> bad value for attribute "id" from namespace > > "http://www.w3.org/XML/1998/namespace"; > > [3] <2> bad value for attribute "linkend" > > > > > > The problem looks like to be the ':' in the xml:id. I searched the > > internet and also some things on > > stackoverflow( > https://stackoverflow.com/questions/1077084/what-characters-are-allowed-in-dom-ids > ), > > but from this I didn't see any restriction in using a ':' in an xml:id. > > > > Did I miss something or it this an omission in xmlmind? > > > > In a nutshell, XMLmind XML Editor is correct in implementing what is > specified in the DocBook v5.0 schema. Excerpts from "docbook.rng": > --- > ... > > <grammar ... datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes"; > > ... > > <define name="db.xml.id.attribute"> > <attribute name="xml:id"> > <a:documentation>Identifies the unique ID value of the > element</a:documentation> > <data type="ID"/> > </attribute> > </define> > > ... > > <define name="db.linkend.attribute"> > <attribute name="linkend"> > <a:documentation>Points to an internal link target by identifying > the value of its xml:id attribute</a:documentation> > <data type="IDREF"/> > </attribute> > </define> > > ... > --- > > So what are <data type="ID"/> and <data type="IDREF"/>? > > * <data type="ID"/> is defined in https://www.w3.org/TR/xmlschema-2/#ID > --- > ID represents the ID attribute type from [XML 1.0 (Second Edition)]. The > ·value space· of ID is the set of all strings that ·match· the NCName > production in [Namespaces in XML]. The ·lexical space· of ID is the set > of all strings that ·match· the NCName production in [Namespaces in > XML]. The ·base type· of ID is NCName. > --- > > * <data type="IDREF"/> is defined in > https://www.w3.org/TR/xmlschema-2/#IDREF > --- > IDREF represents the IDREF attribute type from [XML 1.0 (Second > Edition)]. The ·value space· of IDREF is the set of all strings that > ·match· the NCName production in [Namespaces in XML]. The ·lexical > space· of IDREF is the set of strings that ·match· the NCName production > in [Namespaces in XML]. The ·base type· of IDREF is NCName. --- > > "NCName" (https://www.w3.org/TR/xml-names/#NT-NCName), not "Name" > (https://www.w3.org/TR/REC-xml/#NT-Name). Hence, semi-column not allowed. > > > >
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