Dear Monks,

I want to use a regex to extract ALL character n-tuplets from a given input string irrespective of case. To do so, I have written the following little script: 
#! /usr/bin/perl -w

use strict;

my $a = "Input String: aaAabBAAa";

my $n = shift @ARGV;
$n --;

while ( $a =~ /(.)\1{$n}/ig )
{
    print "$&\n";
    pos( $a ) = pos( $a ) - length( $& ) +1;
}

[download]

For $n = 2, the script provides the correct output:
aa
aA
Aa
bB
AA
Aa

[download]
I am wondering if there is a more elegant way to do this, e.g. by setting a suitable modifier on the regex. The manual adjustment of the match position after each regex match strikes me as cumbersome.

Any suggestions for improvement?

Thanks for your help in advance and best regards -

Pat

In reply to Is there an elegant way of resetting the match position? by pat_mc

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