update-xfonts-traditional: Generalise SIGPIPE handling in process_filter

If we didn't want to process this font, tolerate SIGPIPE for all
elements of the pipeline before "self", rather than special-casing
pcf2bdf.

(We end up setting {SigOK}{13} again for gunzip, which is fine.)

Now process_filter has no knowledge of particular pipeline stages.

1 files changed, 9 insertions, 2 deletions

diff --git a/update-xfonts-traditional b/update-xfonts-traditional
index 8dccad4..01ae145 100755
--- a/update-xfonts-traditional
+++ b/update-xfonts-traditional
@@ -241,16 +241,23 @@ sub process_filter ($$$$$$$$) {
 	# for some other reason then sending it a KILL now won't
 	# affect its exit status.)  We kill the output filters (before
 	# we close the output pipe) so we don't produce messages from
-	# our output filters about corrupted data.
+	# our output filters about corrupted data.  And we tolerate
+	# SIGPIPE in all the input filters.
 	flush $uswrite or die $!;
 
+	my $filterkind = 'input';
 	foreach my $ch (@children) {
 	    if ($ch->{Stage} ne 'self') {
 		kill 9, $ch->{Pid} or die "$ch->{Pid} $ch->{Exe} $!";
 		$ch->{SigOK}{9} = 1;
+	    } else {
+		$filterkind = 'output';
+		next;
+	    }
+	    if ($filterkind eq 'input') {
+		$ch->{SigOK}{13} = 1;
 	    }
 	}
-	$ch{'pcf2bdf'}{SigOK}{13} = 1;
 	# ... we might not have read all the output from pcf2bdf, which is OK
     }