I haven't grokked your code, but I'd suggest it's as simple as this: 
$string = join '', 'a'..'z';
@find = 'a'..'g';
@change = 'h'..'m';
foreach $i (0..$#find)
{
  $string =~ s/$find[$i]/$change[$i]/g;
}

[download]

Update: left off the /g

-QM
--
Quantum Mechanics: The dreams stuff is made of

In reply to Re: Regular Expression Loop Hell by QM
in thread Regular Expression Loop Hell by pjnet

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