I don't know if you have the liberty of reformulating the contents of $sub, but if instead of '$1 spooge' maybe you can use '$1.q{ spooge}' and from there you can employ the /ee switch and gain major Perl purity points!

  my $var = "my dog spot";
  my $expr = "(my (dog|cat)) spot";
  my $sub = '$1.q{ spooge}';
  $var =~ s/$expr/$sub/ee;
  print $var;

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In reply to Re: substitution interpolation? by grinder
in thread substitution interpolation? by h0mee

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