• To: "Xml-Dev@Lists. Xml. Org" <xml-dev@l...>
• Subject: Re: Element content
• From: "Rick Jelliffe" <ricko@a...>
• Date: Mon, 20 Jan 2003 22:49:33 +1100
• References: <GCEDKONBLEFPPADDJCOEKEMCHHAA.whisper@o...>

From: "David LeBlanc" <whisper@o...>
 
> A question has arisen about element content. I'm reasonably sure I've read
> that it's illegal for an element to contain itself either directly or
> indirectly. Is this correct, and if so, can someone point me to the relevant
> section of the XML Recommendation please?
 
No such constraint exists in XML.

SGML provided a facility, the exclusion exception, to all this constraint to be specified.
You can also sepcify it trivially in Schematron.

Topologi's "Editor's Concrete Syntax" uses the SGML '97 facility of "amply-tagged", which
does have the restriction that an element cannot directly contain itself, which allows
an implication policy for ommitted end-tags, see 
http://www.topologi.com/resources/pdfs/ECS.pdf

Cheers
Rick Jelliffe

• References:
  • Element content
    • From: "David LeBlanc" <whisper@o...>

• Prev by Date: Review of XML Schemas datatypes
• Next by Date: XML Repository Software and publishing standards
• Previous by thread: Re: Element content
• Next by thread: RE: Element content
• Index(es):
  • Date
  • Thread