From dfd72df0ae0166b4c94a17bf8ca18954eff1132d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?John=20Ankarstr=C3=B6m?= <john@ankarstrom.se>
Date: Mon, 28 Jun 2021 16:32:50 +0200
Subject: wpdf: Return 0 on exit

---
 wpdf | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/wpdf b/wpdf
index 5700bc4..a906c67 100755
--- a/wpdf
+++ b/wpdf
@@ -9,7 +9,8 @@ my $alive;        # number of children alive
 my %deptarget;    # dependency => target
 my $parent = $$;  # pid of parent
 
-$SIG{HUP} = sub { kill 'INT', $parent if not --$alive };
+$SIG{USR1} = sub { kill 'HUP', 0 if not --$alive };
+$SIG{HUP} = sub { exit 0 };
 
 # collect dependencies for given pdf files
 for my $target (@ARGV) {
@@ -33,7 +34,7 @@ for my $target (@ARGV) {
 		close $f;
 		if (fork == 0) {
 			system 'xpdf', '-remote', "wpdf-$target", $target;
-			kill 'HUP', $parent;
+			kill 'USR1', $parent;
 			exit;
 		}
 		$alive++;
-- 
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