One way would be to use double eval: 

#!/usr/bin/perl

my $str   = 'abc';
my $match = '(a)(.)';
my $repl  = '$2$1';
    
$str =~ s/$match/"\"$repl\""/ee;

print "$str\n";  # bac

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In reply to Re: How do you get s/// to look inside variables in the replacement string? by almut
in thread How do you get s/// to look inside variables in the replacement string? by markkawika

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