rename - Rename or delete a command

       Rename  the  command  that  used to be called oldName so that it is now called newName.  If newName is an
       empty string then oldName is deleted.  oldName and newName may include  namespace  qualifiers  (names  of
       containing  namespaces).   If  a  command is renamed into a different namespace, future invocations of it
       will execute in the new namespace.  The rename command returns an empty string as result.

       The rename command can be used to wrap the standard Tcl commands with your own monitoring machinery.  For
       example, you might wish to count how often the source command is called:

              rename ::source ::theRealSource
              set sourceCount 0
              proc ::source args {
                  global sourceCount
                  puts "called source for the [incr sourceCount]'th time"
                  uplevel 1 ::theRealSource $args
              }

       command, delete, namespace, rename

Tcl                                                                                                 rename(3tcl)

       rename - Rename or delete a command

namespace(3tcl), proc(3tcl)

renameoldNamenewName
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