switch -exact -- ${%metadata%(language)} {
                "" -
                Eagle {
                  #
                  # NOTE: The target language is Eagle, which is evaluating
                  #       this script.  No special handling is needed here.
                  #
                  return [uplevel 1 $script(inner)]
                  return [uplevel #0 $script(inner)]
                }
                Tcl {
                  #
                  # NOTE: The target language is Tcl; therefore, a bit of
                  #       special handling is needed here.
                  #
                  {%tclMustBeReady%}; return [tcl eval \
                      [tcl master] $script(inner)]
                  {%tclMustBeReady%}; return [tcl eval [tcl master] [list \
                      uplevel #0 $script(inner)]]
                }
                default {
                  error "unsupported language"
                }
              }
            } finally {
              #