Hi,

In perldoc's re pragma documentation - use re 'taint' section stands:

This feature is useful when regexp operations on tainted data aren't meant to extract safe substrings, but to perform other transformations.
and additionaly:
...values returned by the m// operator in list context...

So operation like this: 
my $var = $ARGV[0]; ## $var is tainted and has value 'aabb';
{
    use re 'taint';
    $var =~ m/(aa)(bb)/;
}

[download]
does not remove taint flag from $1 and $2 values. Everything as expected.

But similar operation:

my $var = $ARGV[0]; ## $var is tainted and has value 'aabb';
{
    use re 'taint';
    $var =~ s/(aa)(bb)/$1/;
}

[download]
removes taint flag from both $1 and $2 values.

Shouldn't this produce the same result? I know documentation says "values returned by the m// operator" but...

Or maybe there is another way for s/// operator to behave like m// with use re 'taint'?

In reply to use re 'taint' with s/// operator by Pirax

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