That's what test2.tcl in this
[http://zeus.itworld.com:9000/AppDev/4061/swol-1218-regex/]
"Regular Expressions" [http://www.regularexpressions.com] column does.


[[Can someone please teach the Wiki how to parse URLs with
alternate port numbers?  Substition of '%3a' for ':' isn't
possible in that context.]]