I don't think it is so much the tilde(~)being at the end but the hyphen (-) not being on one of the ends. That is, if the hyphen is not at either end of the character class then it becomes a range for whatever two chars it is in between.This should work the same as all the others for instance:
$a =~ /^[-\w.~]+$/

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-enlil

In reply to Re: Regex - Char Class Question by Enlil
in thread Regex - Char Class Question by sth

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