(.*?) ""
(nr\.)* ""
\b\D* "aaa. bbb ccc nr. ddd"
(\d+) "23"
[\d\w-]+\b$ "-56"
It doesn't even need to backtrack, since it found a solution on the first try!
I'd divide the work into two steps:
my ($street, $number) = $address =~ /^(.*?)(\d+)[\d\w-]+\b$/;
$street =~ s/(?:nr\.)*$//g;
The second regex is not quite sufficient, but I don't have time to perfect it right now.
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