use strict;
use warnings;
use base qw(Mail::Thread);
+# WARNING! both these Mail::Thread knobs were found by inspecting
+# the Mail::Thread 2.55 source code, and we have some monkey patches
+# in PublicInbox::Thread to fix memory leaks. Since Mail::Thread
+# appears unmaintained, I suppose it's safe to depend on these
+# variables for now:
+{
+ no warnings 'once';
+ # we want strict threads to expose (and hopefully discourage)
+ # use of broken email clients
+ $Mail::Thread::nosubject = 1;
+ # Keep ghosts with only a single direct child,
+ # don't hide that there may be missing messages.
+ $Mail::Thread::noprune = 1;
+}
if ($Mail::Thread::VERSION <= 2.55) {
eval q(sub _container_class { 'PublicInbox::Thread::Container' });