[XHTML 2] 18.1.1 Handler processing rules

Dear HTML Working Group,

Number 3 states:
"If the content is inline text it must be evaluated as data of the handler 
type of the containing handler element. "

What happens when the type attribute of the containing handler element 
contains multiple contentTypes, which is chosen?

<handler src="chicken" type="text/ecmascript, text/x-newpseak">
var a=1;
</handler>

If chicken fails for whatever reason what content type is the a=1 considered 
to be?

Please clarify the specification to remove any ambiguity.

Regards,

Jim Ley