[PATCH 2/3] watch: set %SIG for non-signalfd/kqueue

[Eric Wong]

We need to ensure there isn't a window where we lose $SIG{CHLD}
handling.  This is the second part in getting t/imapd.t to pass
the reload-after-setting-imap.pollInterval test

That said, I'm not entirely happy with the way -watch jumps
in and out of the event loop.  It's historical baggage from
the pre-event_loop days.
---
 script/public-inbox-watch | 1 +
 1 file changed, 1 insertion(+)

diff --git a/script/public-inbox-watch b/script/public-inbox-watch
index 75a9a36b..870cd31b 100755
--- a/script/public-inbox-watch
+++ b/script/public-inbox-watch
@@ -52,6 +52,7 @@ if ($watch) {
                CHLD => \&PublicInbox::DS::enqueue_reap,
        };
        $sig->{QUIT} = $sig->{TERM} = $sig->{INT} = $quit;
+       local @SIG{keys %$sig} = values(%$sig); # for non-signalfd/kqueue
 
        # --no-scan is only intended for testing atm, undocumented.
        PublicInbox::DS::requeue($scan) if $do_scan;