Am I correct in thinking this is a bug?

Yes, but unfortunately it's yours:

my $a = "123{12\n";
print "ACK digit!\n" if ($a =~ /[^:digit:]/);
print "ACK \\D!\n" if ($a =~ /\D/);

[download]

The POSIX class names include the colons.

Update: I wrote a bad test case. Sorry for the noise.

In reply to Re: negating POSIX regexp classes doesn't work as expected by chromatic
in thread negating POSIX regexp classes doesn't work as expected by cazz

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