my $l= '';
$s =~ s{([(,)])}{
    my $n= ',' eq $1 && '(' eq $l
        ? ';' : $1;
    $l= $1 if ',' ne $1;
    $n
}ge

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- tye        

In reply to Re: Substituting a comma only when it is preceded and followed by a bracket (closure) by tye
in thread Substituting a comma only when it is preceded and followed by a bracket by barraclm

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