I have a file containing 'regex' where number ranges are specified like this [21-43] (match any number from 21..43) I have a bit of code to translate this to Perl regex. It works but the generated regex is not so efficient as it could be. What would be much nicer is if for the example above I could get it to generate /(2[123456789])|(3\d)|(4[0123])/. Can anyone think of non-clunky way to do this ? BTW these numbers are IP address ranges with all that implies. 

    # Expand ranges of numbers so [21-25] becomes  (21|22|23|24|25)
    # Ugh!
    #
    if ( $ip =~ /-/ ) {
        # foreach (split(/\./, $ip) {
        my @i=(split(/\./, $ip) 
        foreach (@i) {
            if ( /\[(\d+)-(\d+)\]/ ) {
            $_ = "(" . join("|", ($1..$2)) . ")"

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Janitored by Arunbear - balanced code tag

In reply to converting user friendly regex to perl friendly by Random_Walk

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