This script will reduce the length of the string by one character: 

#!/usr/bin/perl -w
use strict;
my$str="Biker\n";
print('Length of Biker: '.length($str)."\n");
$str=~s/.//;
print('Length of Biker: '.length($str)."\n");

[download]
#BikerString.pl
Length of Biker: 6
Length of Biker: 5


Do you have any code example giving the strange behavior you're referring to?

Everything will go worng!

In reply to Re: s/.// increases length - bug or badly documented feature by Biker
in thread s/.// increases length - bug or badly documented feature by Juerd

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