Thanks, Gustaf. That indeed fixes things, and shows that it really wasn't that complicated a problem. Still, the ascent up Mount XoTcl is rather steep.
Fixing this problem without knowing the framework and the history is no xotcl-beginners task. in my (biased) opinion i don't think that xotcl is complex, but it turns out that people try with xotcl more complex and abstract things than with pure tcl.
