Is it possible to use perl subroutines inside regexp, using backreferences as parameters?
Yes, and yes. But that's not what you actually want. Or do. You're using a subroutine call in the replacement part, which isn't a regexp.

And how to do that was already explained by moritz, nothing to add to his answer.

In reply to Re: Call subroutines inside regexp, using backrefences as parameters by JavaFan
in thread Call subroutines inside regexp, using backrefences as parameters by Anonymous Monk

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