Like `[uplevel] 1` except that it also causes the current scope to terminate, though the command is looked up in the current context first. Consequence of [NRE].





 proc fred {} {
     george
 }
proc george {} {
 proc george {} {
      tailcall harry
 }

If I call fred, it's almost as though fred called harry directly, instead of george.  Not so?
[MS]:  yup - all traces of george are gone from the program stack when harry is
[MS] yup - all traces of george are gone from the program stack when harry is called. Now, if harry resolves to a different command in george's current namespace than it would under fred's, the harry that is called is george's and not fred's (no diff if the commands are FQ, of course).
I think this does pretty much what delegation is supposed to do, right?
I think this does pretty much what delegation is supposed to do, right? 
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See also TIP#327. http://tip.tcl.tk/327
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