my $name = qr{[\w.-]+};
my $list = '(?:(?:\d+-)?\d+,)*(?:\d+-)?\d+';
my $label = '[a-zA-Z0-9@_.+-]+';
-my $field = '[a-zA-Z][a-zA-Z0-9_-]*';
+my $field = '[a-zA-Z](?:[a-zA-Z0-9_-]|\s+)*';
my $labels = "(?:$label,)*$label";
# We must handle requests such as the following: