From cf3fa62685f06f0325ef6cd0a700c278deba029f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20Buclin?= <LpSolit@netscape.net>
Date: Wed, 19 Apr 2017 19:30:03 +0200
Subject: Do not email global watchers if the single change is about the CC
 list (mga#13379)

---
 Bugzilla/User.pm               |  8 +++++++-
 extensions/Mageia/Extension.pm | 11 +++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/Bugzilla/User.pm b/Bugzilla/User.pm
index 77e6cebb0..1768d7c48 100644
--- a/Bugzilla/User.pm
+++ b/Bugzilla/User.pm
@@ -2132,10 +2132,16 @@ sub wants_mail {
         $relationship = REL_ANY;
     }
 
+    my $wants_mail;
+    Bugzilla::Hook::process('user_wants_mail', { events       => $events,
+                                                 relationship => $relationship,
+                                                 wants_mail   => \$wants_mail });
+    return $wants_mail if defined $wants_mail;
+
     # Skip DB query if relationship is explicit
     return 1 if $relationship == REL_GLOBAL_WATCHER;
 
-    my $wants_mail = grep { $self->mail_settings->{$relationship}{$_} } @$events;
+    $wants_mail = grep { $self->mail_settings->{$relationship}{$_} } @$events;
     return $wants_mail ? 1 : 0;
 }
 
diff --git a/extensions/Mageia/Extension.pm b/extensions/Mageia/Extension.pm
index 19d579c63..819838b95 100644
--- a/extensions/Mageia/Extension.pm
+++ b/extensions/Mageia/Extension.pm
@@ -13,6 +13,7 @@ use warnings;
 
 use parent qw(Bugzilla::Extension);
 
+use Bugzilla::Constants qw(EVT_CC REL_GLOBAL_WATCHER);
 use Bugzilla::Bug qw(LogActivityEntry);
 use Bugzilla::Field qw(get_field_id);
 use Bugzilla::User qw();
@@ -117,4 +118,14 @@ sub mailer_before_send {
     }
 }
 
+sub user_wants_mail {
+    my ($self, $args) = @_;
+    return unless $args->{relationship} == REL_GLOBAL_WATCHER;
+
+    my $wants_mail = $args->{wants_mail};
+    my @events = @{ $args->{events} };
+    # Do not email global watchers if the single change is about the CC list.
+    $$wants_mail = (scalar(@events) == 1 && $events[0] == EVT_CC) ? 0 : 1;
+}
+
 __PACKAGE__->NAME;
-- 
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