m{
      (?(DEFINE)
         (?<x>
            ( . ) ( . )
            (?{ '...' })
         )
         (?<y>
            (?<y1> . ) (?<y2> . )
            (?{ print("($+{y1},$+{y2})") })
         )
         (?<z>
            ( . ) ( . )
            (?{ '...' })
         )
      )

      (?&y)+
   }x;

[download]

In reply to Re: \g{-2} for inside (?{ ... }) by JavaFan
in thread \g{-2} for inside (?{ ... }) by ikegami

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