For the first substitution case, I tried:
if($string=~/(.*?)(\.+)(M+i+)/i) 
{
    $first=$1; 
    $change=$2; 
    $len_change=length($change); 
    $third=$3; 

    print $first;
    print 'O' x $len_change;
    print $third;

    print "\n";
}

[download]
and it printed:
III...MMMMMOOOOOOOOMMMiiiii

[download]
which is correct. Is there a quicker way however?

In reply to Re: How to make these reg exp changes? by Anonymous Monk
in thread How to make these reg exp changes? by Anonymous Monk

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