Allow overriding short_message

systemd-journal-gelf

@@ -168,12 +168,14 @@ while ( my $entry = <JOURNAL> ){
   # OR
   #
   # gelf(~):code=200~url=/index.html~remote_ip=10.99.5.12~referer=http://test.local/
-  if ( $msg->{MESSAGE} =~ m/^gelf(\([^\(\)]+\))?:([a-zA-Z\d_\-]+=([^\|])\|?)+/ ){
+  if ( $msg->{MESSAGE} =~ m/^gelf(\([^\(\)]+\))?:([a-zA-Z\d_\-]+=([^\|]+)\|?)+/ ){
     $msg->{MESSAGE} =~ s/^gelf(\([^\(\)]+\))?://;
     my $separator = ($1 && length $1 > 0) ? qr{$1} : qr{\|};
     foreach ( split /$separator/, $msg->{MESSAGE} ){
-      my ( $key, $val ) = split /=/, $_;
-      $gelf->{'_' . lc $key} = $val;
+      my ( $key, $val ) = split /=/, $_, 2;
+      # Allow overriding short message
+      $key = '_' . $key unless ($key eq 'short_message');
+      $gelf->{$key} = $val;
     }
   }