One thing you have to remember though is that if you're assigning \ to a string that it does interpolate in single quotes. Eg:

# uninterpolated string
my $string = '\\\\ double escape \single escape';

# print it
print "$string\n";

# outputs - "\\ double escape \single escape"

# do your replace
$string =~ s/\\/\\\\/g;

# print it again
print "$string\n";

# output is '\\\\ double escape \\single escape'
[download]

This can sometimes be confusing, because:

$string = '\hello';

# and

$string = '\\hello';
[download]

are equivalent.

Ow, my head hurts...

cLive ;-)