As per Michael Schlenker's excellent suggestion on clt:
http://groups.google.com/groups?hl=en&threadm=87g03k91lm.fsf%40bluepeak.home&rnum=1&prev=/groups%3Fas_q%3Duplevel%2520byte%2520compiled%26as_ugroup%3Dcomp.lang.tcl%26as_scoring%3Dd%26hl%3Den
Add tests for the correct behaviour of [uplevel] and
[upvar], for cases where the upwards level is in
another namespace where some bcc'ed commands are
overriden.
Logged In: YES
user_id=80530
Darn! Miguel beat me to it!