You can generalize it for any number of repeated characters too.


while ( my $string = <DATA> ) {
    $string =~ s/(.)(\1+)/$1.length($1.$2)/ge;
    print $string;
}

__DATA__
Balloon
bookkeeper
Wheeeee!!!

[download]

Output:

Bal2o2n
bo2k2e2per
Whe5!3

[download]

In reply to Re: perl search and replace by thundergnat
in thread perl search and replace by LeukvoorJ

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