is($html, $exp, 'only obfuscated relevant addresses');
+is('foo-bar', PublicInbox::Hval::to_filename('foo bar '),
+ 'to_filename has no trailing -');
+
+is('foo-bar', PublicInbox::Hval::to_filename("foo bar\nanother line\n"),
+ 'to_filename has no repeated -, and nothing past LF');
+
+is('foo.bar', PublicInbox::Hval::to_filename("foo....bar"),
+ 'to_filename squeezes -');
+
+
done_testing();