From 232680a8beeb6a3af38259b4e4467a34971356cf Mon Sep 17 00:00:00 2001
From: Holger Weiss <holger@zedat.fu-berlin.de>
Date: Sun, 2 Mar 2014 13:21:43 +0100
Subject: filter-github-emails: Don't create empty subject

This shouldn't happen in practice[tm], but if we receive the header
line "Subject: [monitoring-plugins] ", then we won't touch it anymore.

diff --git a/libexec/filter-github-emails b/libexec/filter-github-emails
index 326495d..5abf1b0 100755
--- a/libexec/filter-github-emails
+++ b/libexec/filter-github-emails
@@ -172,8 +172,8 @@ sub edit_header {
 
 	# Strip the [monitoring-plugins] tag.
 	my $subject = $header->header('Subject');
-	$subject =~ s/^\[monitoring-plugins\] //;
-	$subject =~ s/^Re: \[monitoring-plugins\] /Re: /;
+	$subject =~ s/^\[monitoring-plugins\] (.+)/$1/;
+	$subject =~ s/^Re: \[monitoring-plugins\] (.+)/Re: $1/;
 	$header->header_set('Subject' => $subject);
 
 	return $header;
-- 
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