From a news:comp.lang.tcl posting by [Jeffrey Hobbs] on Aug 15, 2000: Brandon Hoppe wrote: ''I need a loop equivalent to the do-while loop. Is there one built in?'' A do-until construct was one of the Tcl2K expert questions, with the undisputed winner being: # Done by Reinhard Max # at the Texas Tcl Shoot-Out 2000 # in Austin, Texas. proc do {script arg2 {arg3 {}}} { # # Implements a "do