config: fix NewsWWW fallback for newsgroups in HTTP URLs

Oops, added a test to prevent regressions while we're at it.

1 files changed, 3 insertions, 1 deletions

diff --git a/lib/PublicInbox/Config.pm b/lib/PublicInbox/Config.pm
index 935b0445..35b24af4 100644
--- a/lib/PublicInbox/Config.pm
+++ b/lib/PublicInbox/Config.pm
@@ -56,7 +56,8 @@ sub lookup_name {
         my ($self, $name) = @_;
         my $rv = $self->{-by_name}->{$name};
         return $rv if $rv;
-        $self->{-by_name}->{$name} = _fill($self, "publicinbox.$name");
+        $rv = _fill($self, "publicinbox.$name") or return;
+        $self->{-by_name}->{$name} = $rv;
 }
 
 sub get {
@@ -118,6 +119,7 @@ sub _fill {
                 my $v = $self->{"$pfx.$k"};
                 $rv->{$k} = $v if defined $v;
         }
+        return unless $rv->{mainrepo};
         my $inbox = $pfx;
         $inbox =~ s/\Apublicinbox\.//;
         $rv->{name} = $inbox;