lei: auto-refresh watches in config, cancel missing

This makes behavior less surprising on restarts as we no longer
lose state on restarts, so there's no need to manually run "lei
add-watch" to re-enable watches.  This also allows us to
transparently handle changes if somebody edits the lei config
file directly or via git-config(1).

1 files changed, 4 insertions, 1 deletions

diff --git a/lib/PublicInbox/DirIdle.pm b/lib/PublicInbox/DirIdle.pm
index 7031e5fd..65896f95 100644
--- a/lib/PublicInbox/DirIdle.pm
+++ b/lib/PublicInbox/DirIdle.pm
@@ -56,10 +56,13 @@ sub new {
 sub add_watches {
         my ($self, $dirs, $gone) = @_;
         my $fl = $MAIL_IN | ($gone ? $MAIL_GONE : 0);
+        my @ret;
         for my $d (@$dirs) {
-                $self->{inot}->watch($d, $fl);
+                my $w = $self->{inot}->watch($d, $fl) or next;
+                push @ret, $w;
         }
         PublicInbox::FakeInotify::poll_once($self) if !$ino_cls;
+        @ret
 }
 
 sub rm_watches {