I've implemented an experimental function call expression syntax. This is coming in Version 1.0.7 (ETA by July).
See
http://www.xmlsh.org/SyntaxFunction
For some documentation on how this will work.
Considering also adding dynamic type coercion so that variables interact with xquery expressions in a more obvious way.
E.g.
a=1
echo <[ $a + 1 ]>
Fails because $a is a xs:string type.
You need to do
a=<[1]>
echo <[ $a + 1 ]>
to get an integer
I'm considering having expressions passed to xquery or perhaps when evaluated to automatically be coerced to the apparent type, but I haven't worked out all the ramifications of this yet.
