Minor language cleanup.

.gitignore

@@ -1 +1,15 @@
+blib*
+Makefile
+Makefile.old
+pm_to_blib*
+*.tar.gz
+.lwpcookies
+cover_db
+pod2htm*.tmp
+/RT-Extension-References*
+*.bak
+*.swp
+/MYMETA.*
+/t/tmp
+/xt/tmp
 *~

Makefile.PL

@@ -0,0 +1,11 @@
+use inc::Module::Install;
+
+RTx     'RT-Extension-ThreadByReference';
+license 'perl';
+repository 'https://github.com/akamai/rt-extension-threadbyreference';
+
+requires_rt '4.0.0';
+rt_too_new '4.4.0';
+
+sign;
+WriteAll;

lib/RT/Extension/ThreadByReference.pm

@@ -0,0 +1,80 @@
+use strict;
+use warnings;
+package RT::Extension::ThreadByReference;
+
+our $VERSION = '0.01';
+
+=head1 NAME
+
+RT-Extension-ThreadByReference - Use the MIME Reference header to try and thread messages to tickets
+
+=head1 DESCRIPTION
+
+When an RT ticketing queue is CCed on a message thread, it can be very
+difficult to get the subject lines correct in all parts of the
+message.  This can cause a single thread to spawn off tens of
+different tickets that need manual merging.
+
+This extension uses the MIME Reference header to search for threads
+to associate a message with.
+
+=head1 RT VERSION
+
+Works with RT 4.0 and greater.
+
+=head1 INSTALLATION
+
+=over
+
+=item C<perl Makefile.PL>
+
+=item C<make>
+
+=item C<make install>
+
+May need root permissions
+
+=item Edit your F</opt/rt4/etc/RT_SiteConfig.pm>
+
+If you are using RT 4.2 or greater, add this line:
+
+    Plugin('RT::Extension::ThreadByReference');
+
+For RT 4.0, add this line:
+
+    Set(@Plugins, qw(RT::Extension::ThreadByReference));
+
+or add C<RT::Extension::ThreadByReference> to your existing C<@Plugins> line.
+
+=item Clear your mason cache
+
+    rm -rf /opt/rt4/var/mason_data/obj
+
+=item Restart your webserver
+
+=back
+
+=head1 AUTHOR
+
+Harlan Lieberman-Berg C<< <hlieberm@akamai.com> >>
+
+=head1 BUGS
+
+All bugs should be reported via email to
+
+    L<bug-RT-Extension-ThreadByReference@rt.cpan.org|mailto:bug-RT-Extension-ThreadByReference@rt.cpan.org>
+
+or via the web at
+
+    L<rt.cpan.org|http://rt.cpan.org/Public/Dist/Display.html?Name=RT-Extension-ThreadByReference>.
+
+=head1 LICENSE
+
+Copyright (c) 2015-2016 by Akamai Technologies, Inc.
+
+This software is free software; you can redistribute and/or modify it
+under the same terms as Perl itself.
+
+=cut
+
+1;

lib/RT/Interface/Email/ThreadByReference.pm

@@ -1,18 +1,12 @@
-package RT::Interface::Email::TryThreading;
+package RT::Interface::Email::ThreadByReference;
 
 use strict;
 use warnings;
 
 use RT::Interface::Email ();
 
-=head1 NAME
-
-RT::Interface::Email::TryThreading - Use In-Reply-To and other headers to try and find a ticket
-
-=cut
-
 sub GetCurrentUser {
-    $RT::Logger->debug("Entering TryThreading");
+    $RT::Logger->debug("Entering ThreadByReference");
 
     my %args = (
 	Message       => undef,
@@ -25,13 +19,13 @@ sub GetCurrentUser {
 	@_
 	);
 
-    if ($args{'Ticket'}) {
-	$RT::Logger->debug("Ticket %s already assigned.  You don't need my help!", 
-			   $args{'Ticket'});
+    if ($args{'Ticket'}->id) {
+	$RT::Logger->debug(sprintf("Ticket %s already assigned.  You don't need my help!", 
+			   $args{'Ticket'}->id));
 	return ($args{'CurrentUser'}, $args{'AuthLevel'});
     }
 
-    $RT::Logger->debug("Operating on queue %s", $args{'Queue'});
+    $RT::Logger->debug(sprintf("Operating on queue %s", $args{'Queue'}));
 
     my @messageids = FetchPossibleHeaders($args{'Message'});
 
@@ -41,9 +35,9 @@ sub GetCurrentUser {
     }
 
     my %tickets = ();
-    foreach $messageid (@messageids) {
-	if (MessageIdToTicket($messageid)) {
-	    foreach $ticket ($_) {
+    foreach my $messageid (@messageids) {
+	if (my $ids = MessageIdToTicket($messageid)) {
+	    foreach my $ticket ($ids) {
 		$tickets{$ticket} = undef;
 	    }
 	}
@@ -57,11 +51,11 @@ sub GetCurrentUser {
     }
     elsif (scalar(@tickets) > 1) {
 	$RT::Logger->warning("Email maps to more than one ticket.");
-	$RT::Logger->warning("Tickets: %s", @tickets);
+	$RT::Logger->warning(sprintf("Tickets: %s", @tickets));
     }
 
     # We have the ticket.  Set it.
-    $RT::Logger->debug("Threading email in ticket %s", $tickets[0]);
+    $RT::Logger->debug(sprintf("Threading email in ticket %s", $tickets[0]));
     $args{'Ticket'}->Load($tickets[0]);
 
     return ($args{'CurrentUser'}, $args{'AuthLevel'});
@@ -78,21 +72,22 @@ sub FetchPossibleHeaders {
     # There may be multiple references
     # In practice, In-Reply-To seems to no longer be worth parsing, as
     # it seems to usually just be a repeat of the References.
-    if ($head->get('References')) {
+    if (my $refs = $head->get('References')) {
 	chomp();
 
-	foreach my $ref (split(/\s+/, $_)) {
+	foreach my $ref (split(/\s+/, $refs)) {
 	    $ref =~ /,?<([^>]+)>/;
 	    if ($1) {
 		push(@msgids, $1);
-		$RT::Logger->debug("Found reference: %s", $1);
+		$RT::Logger->debug(sprintf("Found reference: %s", $1));
 	    }
 	    else {
-		$RT::Logger->debug("Reference with borked syntax: %s", $ref);
+		$RT::Logger->debug(sprintf("Reference with borked syntax: %s", $ref));
 		next;
 	    }
 	}
     }
+    return @msgids;
 }
 
 sub MessageIdToTicket {
@@ -136,10 +131,11 @@ sub MessageIdToTicket {
 	);
 
     my %tickets;
-    while (my $attach => $attachments->Next) {
+    while (my $attach = $attachments->Next) {
 	$tickets{$attach->TransactionObj()->Ticket} = undef;
     }
 
     return keys(%tickets);
 }
+
 1;