> That happens because the match variables ($1, $2, ...) are only changed > when a regular expression matches; otherwise, they are left alone. > > In the first case, "$2 !~ /domain\.com/" succeeds but does not capture > anything, so the numbered match variables are unset. > > Your situation reinforces the rule that you should always test if the > match succeeded before you attempt to use the match variables:
Very good point. I can see how in situations without a check it could lead to very nasty (and possibly subtle) results much farther down the chain that could take much time to track down (and create a path of destruction until it is tracked down). Thanks, Steve -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/
