Very well spotted, Hopes. Dot not matching a newline is such a common mistake it's easy to forget. I'm glad that you noticed it.
<pedant>
Actually, it's possible to get dot to match everything by using the /s switch. This also has the benefit that ^ and $ will match the beginning and end of the string, and not at line breaks, which for our purposes here is desirable. See the perlre man page for details.
Hence $string =~ s/^..//s does what we want, even if we are dealing with newlines. If you don't mind losing clarity, you can even drop the ^ in this situation.
</pedant>
Having said all that, the substr method described above would be my recommendation. (It's also likely to be the fastest). ;)
Cheers,
Paul
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