[PATCH 1/7] ipc: do not add "0" to $0 of solo workers

[Eric Wong <e@80x24.org>]

It's needless noise and misleads users reading "ps" into
thinking there's more workers when there's only one.
---
 lib/PublicInbox/IPC.pm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/PublicInbox/IPC.pm b/lib/PublicInbox/IPC.pm
index add5f3df..1c699d76 100644
--- a/lib/PublicInbox/IPC.pm
+++ b/lib/PublicInbox/IPC.pm
@@ -353,7 +353,8 @@ sub _wq_worker_start ($$$$) {
 				keys %{delete($self->{-wq_workers}) // {}};
 		$SIG{$_} = 'IGNORE' for (qw(PIPE));
 		$SIG{$_} = 'DEFAULT' for (qw(TTOU TTIN TERM QUIT INT CHLD));
-		local $0 = "$self->{-wq_ident} $self->{-wq_worker_nr}";
+		local $0 = $one ? $self->{-wq_ident} :
+			"$self->{-wq_ident} $self->{-wq_worker_nr}";
 		# ensure we properly exit even if warn() dies:
 		my $end = PublicInbox::OnDestroy->new($$, sub { exit(!!$@) });
 		eval {