wpdf: Return 0 on exit

1 files 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++;