xml-dev - Re: Q: Are entities containing mark-up allowed in attribute values?

[Mark Wutka <mark@wutka.com>]

It doesn't look like there's an explicit restriction against putting
"<" in the entity value, but there is the following restriction:

[10] AttValue ::= '"' ([^<&"] | Reference)* '"' |
                  "'" ([^<&'] | Reference)* "'"

This forbids a "<" in an attribute value. As far as forbidding you to put
a < in an entity and then using that in an attribute, I think there's an
implicit assumption that the expanded entity must contain text that would
be valid in the context it is used.
   Mark

On Wed, 27 Sep 2000, Rob Lugt wrote:

> Are entities containing mark-up allowed in attribute values? 
> 
> For example, is the following document well-formed?
> 
> <?xml version="1.0"?>
> <!DOCTYPE message [
> <!ENTITY greet "<greeting>Hi</greeting>">
> ]>
> <!--Atribute value has an entity reference: &greet; which contains mark-up! -->
> <message value="&greet;"/>
>  
> If not, can somebody point out where in the XML 1.0 spec this is mandated?
>  
> Many thanks
> Rob Lugt
> Elcel Technology
>  
>