+
+ $config = PublicInbox::Config->new(\<<EOF);
+$cfgpfx.address=test\@example.com
+$cfgpfx.mainrepo=/path/to/non/existent
+EOF
+ $ibx = $config->lookup_name('test');
+ is($ibx->{inboxdir}, '/path/to/non/existent', 'mainrepo still works');
+
+ $config = PublicInbox::Config->new(\<<EOF);
+$cfgpfx.address=test\@example.com
+$cfgpfx.inboxdir=/path/to/non/existent
+$cfgpfx.mainrepo=/path/to/deprecated
+EOF
+ $ibx = $config->lookup_name('test');
+ is($ibx->{inboxdir}, '/path/to/non/existent',
+ 'inboxdir takes precedence');