#PCDATA in model group that is not optional and repeatable (was: XML and repeatable model groups)

geirog at falch.no geirog at falch.no
Mon Apr 21 12:51:08 BST 1997

At 11:21 21.04.97 +0100, you wrote:
>The message should have read "#PCDATA in model group that is not
>optional and repeatable".  The draft XML spec allows mixed content
>only as an optional and repeatable OR group, where #PCDATA is the
>first member.

>By the way, you gain nothing by using "+" instead of "*", since
>#PCDATA can be an empty string.  

I know, but why isn't it allowed at all? (or why was it allowed in SGML in
the first place?)

>For example, in full SGML, the
>following would satisfy (#PCDATA | stagedir)+ as well as it satisfies
>(#PCDATA | stagedir)*:

This means that I have to change all occurences of '+' to '*' in
mixed-content declarations in my SGML dtds in order to make them XML

Perhaps it is better if I change my existing SGML dtds instead... :-)

Thank you,


------------------  Geir Ove Grønmo  ------------------
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      Phone: +47 22 90 27 36 Fax: +47 22 90 25 99
 [grove at falch.no | http://www.falch.no/people/geirog]

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