update copyright to 2021

122 files changed, 122 insertions, 0 deletions

diff --git a/libmate-panel-applet/mate-panel-applet-factory.c b/libmate-panel-applet/mate-panel-applet-factory.c
index 815ad491..fb4cb549 100644
--- a/libmate-panel-applet/mate-panel-applet-factory.c
+++ b/libmate-panel-applet/mate-panel-applet-factory.c
@@ -2,6 +2,7 @@
  * mate-panel-applet-factory.c: panel applet writing API.
  *
  * Copyright (C) 2010 Carlos Garcia Campos <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
diff --git a/libmate-panel-applet/mate-panel-applet-factory.h b/libmate-panel-applet/mate-panel-applet-factory.h
index 2a8eeb07..a7d2aa53 100644
--- a/libmate-panel-applet/mate-panel-applet-factory.h
+++ b/libmate-panel-applet/mate-panel-applet-factory.h
@@ -2,6 +2,7 @@
  * mate-panel-applet-factory.h: panel applet writing API.
  *
  * Copyright (C) 2010 Carlos Garcia Campos <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
diff --git a/libmate-panel-applet/mate-panel-applet-gsettings.c b/libmate-panel-applet/mate-panel-applet-gsettings.c
index dbe0bf7a..1c0ac744 100644
--- a/libmate-panel-applet/mate-panel-applet-gsettings.c
+++ b/libmate-panel-applet/mate-panel-applet-gsettings.c
@@ -2,6 +2,7 @@
  * mate-panel-applet-gsettings.c: panel applet preferences handling.
  *
  * Copyright (C) 2012 Stefano Karapetsas
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
diff --git a/libmate-panel-applet/mate-panel-applet-gsettings.h b/libmate-panel-applet/mate-panel-applet-gsettings.h
index 43b2de8c..0dbbdb01 100644
--- a/libmate-panel-applet/mate-panel-applet-gsettings.h
+++ b/libmate-panel-applet/mate-panel-applet-gsettings.h
@@ -2,6 +2,7 @@
  * mate-panel-applet-gsettings.h: panel applet preferences handling.
  *
  * Copyright (C) 2012 Stefano Karapetsas
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
diff --git a/libmate-panel-applet/mate-panel-applet.c b/libmate-panel-applet/mate-panel-applet.c
index 3d6a4ac1..c08e5cc2 100644
--- a/libmate-panel-applet/mate-panel-applet.c
+++ b/libmate-panel-applet/mate-panel-applet.c
@@ -3,6 +3,7 @@
  *
  * Copyright (c) 2010 Carlos Garcia Campos <[email protected]>
  * Copyright (C) 2001 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
diff --git a/libmate-panel-applet/mate-panel-applet.h b/libmate-panel-applet/mate-panel-applet.h
index fb869879..85eb0d4d 100644
--- a/libmate-panel-applet/mate-panel-applet.h
+++ b/libmate-panel-applet/mate-panel-applet.h
@@ -2,6 +2,7 @@
  * mate-panel-applet.h: panel applet writing API.
  *
  * Copyright (C) 2001 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
diff --git a/libmate-panel-applet/panel-applet-private.h b/libmate-panel-applet/panel-applet-private.h
index ea1dd6c2..936eefb6 100644
--- a/libmate-panel-applet/panel-applet-private.h
+++ b/libmate-panel-applet/panel-applet-private.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2010 Carlos Garcia Campos
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
diff --git a/libmate-panel-applet/panel-plug-private.h b/libmate-panel-applet/panel-plug-private.h
index 5d5f1265..ae906fc7 100644
--- a/libmate-panel-applet/panel-plug-private.h
+++ b/libmate-panel-applet/panel-plug-private.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2016 Alberts Muktupāvels
+ * Copyright (C) 2016-2021 MATE Developers
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/libmate-panel-applet/panel-plug.c b/libmate-panel-applet/panel-plug.c
index 3bf3def0..ec24a85a 100644
--- a/libmate-panel-applet/panel-plug.c
+++ b/libmate-panel-applet/panel-plug.c
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2016 Alberts Muktupāvels
+ * Copyright (C) 2016-2021 MATE Developers
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-panel/applet.c b/mate-panel/applet.c
index 76a3fb31..2fbc7033 100644
--- a/mate-panel/applet.c
+++ b/mate-panel/applet.c
@@ -1,5 +1,6 @@
 /* Mate panel: general applet functionality
  * (C) 1997 the Free Software Foundation
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * Authors:  George Lebl
  *           Federico Mena
diff --git a/mate-panel/drawer-private.h b/mate-panel/drawer-private.h
index 67db7353..4f300dea 100644
--- a/mate-panel/drawer-private.h
+++ b/mate-panel/drawer-private.h
@@ -1,5 +1,6 @@
 /*
  * MATE panel drawer module.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * List static function prototypes separate
  * to prevent errors when compiling panel.c
diff --git a/mate-panel/drawer.c b/mate-panel/drawer.c
index a59cf6e8..ac9ce919 100644
--- a/mate-panel/drawer.c
+++ b/mate-panel/drawer.c
@@ -1,6 +1,7 @@
 /*
  * MATE panel drawer module.
  * (C) 1997 The Free Software Foundation
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * Authors: Miguel de Icaza
  *          Federico Mena
diff --git a/mate-panel/launcher.c b/mate-panel/launcher.c
index ad2c147b..3246c202 100644
--- a/mate-panel/launcher.c
+++ b/mate-panel/launcher.c
@@ -2,6 +2,7 @@
  * MATE panel launcher module.
  * (C) 1997,1998,1999,2000 The Free Software Foundation
  * (C) 2000 Eazel, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * Authors: Miguel de Icaza
  *          Federico Mena
diff --git a/mate-panel/launcher.h b/mate-panel/launcher.h
index 2d3594bb..97f87940 100644
--- a/mate-panel/launcher.h
+++ b/mate-panel/launcher.h
@@ -1,6 +1,7 @@
 /*
  * MATE panel launcher module.
  * (C) 1997 The Free Software Foundation
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * Authors: Miguel de Icaza
  *          Federico Mena
diff --git a/mate-panel/libmate-panel-applet-private/panel-applet-container.c b/mate-panel/libmate-panel-applet-private/panel-applet-container.c
index 9a4945a0..2ce58402 100644
--- a/mate-panel/libmate-panel-applet-private/panel-applet-container.c
+++ b/mate-panel/libmate-panel-applet-private/panel-applet-container.c
@@ -2,6 +2,7 @@
  * panel-applet-container.c: a container for applets.
  *
  * Copyright (C) 2010 Carlos Garcia Campos <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
diff --git a/mate-panel/libmate-panel-applet-private/panel-applet-container.h b/mate-panel/libmate-panel-applet-private/panel-applet-container.h
index 63f5f078..60cec083 100644
--- a/mate-panel/libmate-panel-applet-private/panel-applet-container.h
+++ b/mate-panel/libmate-panel-applet-private/panel-applet-container.h
@@ -2,6 +2,7 @@
  * panel-applet-container.h: a container for applets.
  *
  * Copyright (C) 2010 Carlos Garcia Campos <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
diff --git a/mate-panel/libmate-panel-applet-private/panel-applet-frame-dbus.c b/mate-panel/libmate-panel-applet-private/panel-applet-frame-dbus.c
index c20e5cb2..09edf6b3 100644
--- a/mate-panel/libmate-panel-applet-private/panel-applet-frame-dbus.c
+++ b/mate-panel/libmate-panel-applet-private/panel-applet-frame-dbus.c
@@ -5,6 +5,7 @@
  * Copyright (C) 2001 - 2003 Sun Microsystems, Inc.
  * Copyright (C) 2010 Carlos Garcia Campos <[email protected]>
  * Copyright (C) 2010 Vincent Untz <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libmate-panel-applet-private/panel-applet-frame-dbus.h b/mate-panel/libmate-panel-applet-private/panel-applet-frame-dbus.h
index 73da38f2..65dd4a21 100644
--- a/mate-panel/libmate-panel-applet-private/panel-applet-frame-dbus.h
+++ b/mate-panel/libmate-panel-applet-private/panel-applet-frame-dbus.h
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2001 - 2003 Sun Microsystems, Inc.
  * Copyright (C) 2010 Vincent Untz <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libmate-panel-applet-private/panel-applets-manager-dbus.c b/mate-panel/libmate-panel-applet-private/panel-applets-manager-dbus.c
index 5873a4e9..ca1f08ad 100644
--- a/mate-panel/libmate-panel-applet-private/panel-applets-manager-dbus.c
+++ b/mate-panel/libmate-panel-applet-private/panel-applets-manager-dbus.c
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2010 Carlos Garcia Campos <[email protected]>
  * Copyright (C) 2010 Vincent Untz <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libmate-panel-applet-private/panel-applets-manager-dbus.h b/mate-panel/libmate-panel-applet-private/panel-applets-manager-dbus.h
index 85ab5c53..9fb63d52 100644
--- a/mate-panel/libmate-panel-applet-private/panel-applets-manager-dbus.h
+++ b/mate-panel/libmate-panel-applet-private/panel-applets-manager-dbus.h
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2010 Carlos Garcia Campos <[email protected]>
  * Copyright (C) 2010 Vincent Untz <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libpanel-util/panel-cleanup.c b/mate-panel/libpanel-util/panel-cleanup.c
index 199a7036..d615b83c 100644
--- a/mate-panel/libpanel-util/panel-cleanup.c
+++ b/mate-panel/libpanel-util/panel-cleanup.c
@@ -2,6 +2,7 @@
  * panel-cleanup.c: utility to clean up things on exit
  *
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libpanel-util/panel-cleanup.h b/mate-panel/libpanel-util/panel-cleanup.h
index 9da5b828..7683c2a9 100644
--- a/mate-panel/libpanel-util/panel-cleanup.h
+++ b/mate-panel/libpanel-util/panel-cleanup.h
@@ -2,6 +2,7 @@
  * panel-cleanup.h: utility to clean up things on exit
  *
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libpanel-util/panel-error.c b/mate-panel/libpanel-util/panel-error.c
index b14d225f..ccb3b2f1 100644
--- a/mate-panel/libpanel-util/panel-error.c
+++ b/mate-panel/libpanel-util/panel-error.c
@@ -2,6 +2,7 @@
  * panel-error.c: an easy-to-use error dialog
  *
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * Originally based on code from panel-util.c (there was no relevant copyright
  * header at the time).
diff --git a/mate-panel/libpanel-util/panel-error.h b/mate-panel/libpanel-util/panel-error.h
index c888731a..5b1c9b69 100644
--- a/mate-panel/libpanel-util/panel-error.h
+++ b/mate-panel/libpanel-util/panel-error.h
@@ -2,6 +2,7 @@
  * panel-error.h: an easy-to-use error dialog
  *
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * Originally based on code from panel-util.h (there was no relevant copyright
  * header at the time).
diff --git a/mate-panel/libpanel-util/panel-glib.c b/mate-panel/libpanel-util/panel-glib.c
index 70fc7610..e7cc531c 100644
--- a/mate-panel/libpanel-util/panel-glib.c
+++ b/mate-panel/libpanel-util/panel-glib.c
@@ -2,6 +2,7 @@
  * panel-glib.c: various small extensions to glib
  *
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * Originally based on code from panel-util.c (there was no relevant copyright
  * header at the time), but the code was:
diff --git a/mate-panel/libpanel-util/panel-glib.h b/mate-panel/libpanel-util/panel-glib.h
index 0cab22e9..aa21b347 100644
--- a/mate-panel/libpanel-util/panel-glib.h
+++ b/mate-panel/libpanel-util/panel-glib.h
@@ -2,6 +2,7 @@
  * panel-glib.h: various small extensions to glib
  *
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libpanel-util/panel-gtk.c b/mate-panel/libpanel-util/panel-gtk.c
index a1db40fc..75668323 100644
--- a/mate-panel/libpanel-util/panel-gtk.c
+++ b/mate-panel/libpanel-util/panel-gtk.c
@@ -2,6 +2,7 @@
  * panel-gtk.c: various small extensions to gtk+
  *
  * Copyright (C) 2010 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libpanel-util/panel-gtk.h b/mate-panel/libpanel-util/panel-gtk.h
index 3703e5a4..25ab2644 100644
--- a/mate-panel/libpanel-util/panel-gtk.h
+++ b/mate-panel/libpanel-util/panel-gtk.h
@@ -2,6 +2,7 @@
  * panel-gtk.h: various small extensions to gtk+
  *
  * Copyright (C) 2009-2010 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libpanel-util/panel-icon-chooser.c b/mate-panel/libpanel-util/panel-icon-chooser.c
index e9f0c2ec..1e6c0ca3 100644
--- a/mate-panel/libpanel-util/panel-icon-chooser.c
+++ b/mate-panel/libpanel-util/panel-icon-chooser.c
@@ -2,6 +2,7 @@
  * panel-icon-chooser.c: An icon chooser widget
  *
  * Copyright (C) 2010 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libpanel-util/panel-icon-chooser.h b/mate-panel/libpanel-util/panel-icon-chooser.h
index a815749a..97cb0fe6 100644
--- a/mate-panel/libpanel-util/panel-icon-chooser.h
+++ b/mate-panel/libpanel-util/panel-icon-chooser.h
@@ -2,6 +2,7 @@
  * panel-icon-chooser.h: An icon chooser widget
  *
  * Copyright (C) 2010 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libpanel-util/panel-keyfile.c b/mate-panel/libpanel-util/panel-keyfile.c
index 09d387e3..2b58dc3a 100644
--- a/mate-panel/libpanel-util/panel-keyfile.c
+++ b/mate-panel/libpanel-util/panel-keyfile.c
@@ -2,6 +2,7 @@
  * panel-keyfile.c: GKeyFile extensions
  *
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * Based on code from panel-util.c (there was no copyright header at the time)
  *
diff --git a/mate-panel/libpanel-util/panel-keyfile.h b/mate-panel/libpanel-util/panel-keyfile.h
index 8f90939d..248b843b 100644
--- a/mate-panel/libpanel-util/panel-keyfile.h
+++ b/mate-panel/libpanel-util/panel-keyfile.h
@@ -2,6 +2,7 @@
  * panel-keyfile.h: GKeyFile extensions
  *
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * Based on code from panel-util.h (there was no copyright header at the time)
  *
diff --git a/mate-panel/libpanel-util/panel-launch.c b/mate-panel/libpanel-util/panel-launch.c
index 7de0a02c..fb72c221 100644
--- a/mate-panel/libpanel-util/panel-launch.c
+++ b/mate-panel/libpanel-util/panel-launch.c
@@ -2,6 +2,7 @@
  * panel-launch.c: some helpers to launch desktop files
  *
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libpanel-util/panel-launch.h b/mate-panel/libpanel-util/panel-launch.h
index 653167c1..372be078 100644
--- a/mate-panel/libpanel-util/panel-launch.h
+++ b/mate-panel/libpanel-util/panel-launch.h
@@ -2,6 +2,7 @@
  * panel-launch.h: some helpers to launch desktop files
  *
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libpanel-util/panel-list.c b/mate-panel/libpanel-util/panel-list.c
index 9b1ad3f9..636161cf 100644
--- a/mate-panel/libpanel-util/panel-list.c
+++ b/mate-panel/libpanel-util/panel-list.c
@@ -2,6 +2,7 @@
  * panel-list.c: GList & GSList extensions
  *
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * Originally based on code from panel-util.c (there was no relevant copyright
  * header at the time), but the code was:
diff --git a/mate-panel/libpanel-util/panel-list.h b/mate-panel/libpanel-util/panel-list.h
index ec12a40d..7e09e368 100644
--- a/mate-panel/libpanel-util/panel-list.h
+++ b/mate-panel/libpanel-util/panel-list.h
@@ -2,6 +2,7 @@
  * panel-list.h: GList & GSList extensions
  *
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libpanel-util/panel-session-manager.c b/mate-panel/libpanel-util/panel-session-manager.c
index ef99cad2..afd09501 100644
--- a/mate-panel/libpanel-util/panel-session-manager.c
+++ b/mate-panel/libpanel-util/panel-session-manager.c
@@ -2,6 +2,7 @@
  * panel-session.c:
  *
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libpanel-util/panel-session-manager.h b/mate-panel/libpanel-util/panel-session-manager.h
index 98d09c94..fe148e9d 100644
--- a/mate-panel/libpanel-util/panel-session-manager.h
+++ b/mate-panel/libpanel-util/panel-session-manager.h
@@ -2,6 +2,7 @@
  * panel-session.h:
  *
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libpanel-util/panel-show.c b/mate-panel/libpanel-util/panel-show.c
index 19feac90..1bc84ee7 100644
--- a/mate-panel/libpanel-util/panel-show.c
+++ b/mate-panel/libpanel-util/panel-show.c
@@ -2,6 +2,7 @@
  * panel-show.c: a helper around gtk_show_uri
  *
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libpanel-util/panel-show.h b/mate-panel/libpanel-util/panel-show.h
index 9964319a..56a761c0 100644
--- a/mate-panel/libpanel-util/panel-show.h
+++ b/mate-panel/libpanel-util/panel-show.h
@@ -3,6 +3,7 @@
  * or gtk_show_uri for gtk 3.20 and earlier
  *
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libpanel-util/panel-xdg.c b/mate-panel/libpanel-util/panel-xdg.c
index 0b7c4c85..361f413c 100644
--- a/mate-panel/libpanel-util/panel-xdg.c
+++ b/mate-panel/libpanel-util/panel-xdg.c
@@ -2,6 +2,7 @@
  * panel-xdg.c: miscellaneous XDG-related functions.
  *
  * Copyright (C) 2010 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/libpanel-util/panel-xdg.h b/mate-panel/libpanel-util/panel-xdg.h
index 359c91b2..1553c8f5 100644
--- a/mate-panel/libpanel-util/panel-xdg.h
+++ b/mate-panel/libpanel-util/panel-xdg.h
@@ -2,6 +2,7 @@
  * panel-xdg.h: miscellaneous XDG-related functions.
  *
  * Copyright (C) 2010 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/main.c b/mate-panel/main.c
index 15b7303d..2fc35696 100644
--- a/mate-panel/main.c
+++ b/mate-panel/main.c
@@ -1,6 +1,7 @@
 /* Mate panel: Initialization routines
  * (C) 1997,1998,1999,2000 the Free Software Foundation
  * (C) 2000 Eazel, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * Authors: Federico Mena
  *          Miguel de Icaza
diff --git a/mate-panel/menu.c b/mate-panel/menu.c
index e1f4ba08..20a13ea1 100644
--- a/mate-panel/menu.c
+++ b/mate-panel/menu.c
@@ -3,6 +3,7 @@
  * Copyright (C) 2000 Helix Code, Inc.
  * Copyright (C) 2000 Eazel, Inc.
  * Copyright (C) 2004 Red Hat Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/menu.h b/mate-panel/menu.h
index bd2398de..99d557cc 100644
--- a/mate-panel/menu.h
+++ b/mate-panel/menu.h
@@ -3,6 +3,7 @@
  * Copyright (C) 2000 Helix Code, Inc.
  * Copyright (C) 2000 Eazel, Inc.
  * Copyright (C) 2004 Red Hat Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-a11y.c b/mate-panel/panel-a11y.c
index 531f4b8b..d3d0411c 100644
--- a/mate-panel/panel-a11y.c
+++ b/mate-panel/panel-a11y.c
@@ -2,6 +2,7 @@
  * panel-a11y.c: panel accessibility support module
  *
  * Copyright (C) 2002, 2003 Sun Microsystems Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-panel/panel-a11y.h b/mate-panel/panel-a11y.h
index f12e9aa4..9fe75d3b 100644
--- a/mate-panel/panel-a11y.h
+++ b/mate-panel/panel-a11y.h
@@ -2,6 +2,7 @@
  * panel-a11y.h: panel accessibility support module
  *
  * Copyright (C) 2002, 2003 Sun Microsystems Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-panel/panel-action-button.c b/mate-panel/panel-action-button.c
index 2c4569c1..295843f4 100644
--- a/mate-panel/panel-action-button.c
+++ b/mate-panel/panel-action-button.c
@@ -4,6 +4,7 @@
  *
  * Copyright (C) 2002 Sun Microsystems, Inc.
  * Copyright (C) 2004 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-action-button.h b/mate-panel/panel-action-button.h
index 6bddff6d..0df9d1ab 100644
--- a/mate-panel/panel-action-button.h
+++ b/mate-panel/panel-action-button.h
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2002 Sun Microsystems, Inc.
  * Copyright (C) 2004 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-action-protocol.c b/mate-panel/panel-action-protocol.c
index 4661971d..86311072 100644
--- a/mate-panel/panel-action-protocol.c
+++ b/mate-panel/panel-action-protocol.c
@@ -2,6 +2,7 @@
  * panel-action-protocol.h: _MATE_PANEL_ACTION protocol impl.
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-action-protocol.h b/mate-panel/panel-action-protocol.h
index 4774826b..28d1bc03 100644
--- a/mate-panel/panel-action-protocol.h
+++ b/mate-panel/panel-action-protocol.h
@@ -2,6 +2,7 @@
  * panel-action-protocol.h: _MATE_PANEL_ACTION protocol impl.
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-addto.c b/mate-panel/panel-addto.c
index 9f76b717..3d5a24c3 100644
--- a/mate-panel/panel-addto.c
+++ b/mate-panel/panel-addto.c
@@ -2,6 +2,7 @@
  * panel-addto.c:
  *
  * Copyright (C) 2004 Vincent Untz
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-addto.h b/mate-panel/panel-addto.h
index f1defdc5..92a37af2 100644
--- a/mate-panel/panel-addto.h
+++ b/mate-panel/panel-addto.h
@@ -2,6 +2,7 @@
  * panel-addto.h:
  *
  * Copyright (C) 2004 Vincent Untz
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-applet-frame.c b/mate-panel/panel-applet-frame.c
index ebb8cb14..ed85d3e5 100644
--- a/mate-panel/panel-applet-frame.c
+++ b/mate-panel/panel-applet-frame.c
@@ -4,6 +4,7 @@
  *
  * Copyright (C) 2010 Carlos Garcia Campos <[email protected]>
  * Copyright (C) 2001 - 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-applet-frame.h b/mate-panel/panel-applet-frame.h
index 50b700b4..16df013d 100644
--- a/mate-panel/panel-applet-frame.h
+++ b/mate-panel/panel-applet-frame.h
@@ -2,6 +2,7 @@
  * panel-applet-frame.h: panel side container for applets
  *
  * Copyright (C) 2001 - 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-applet-info.c b/mate-panel/panel-applet-info.c
index c3862358..9081156f 100644
--- a/mate-panel/panel-applet-info.c
+++ b/mate-panel/panel-applet-info.c
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2010 Carlos Garcia Campos <[email protected]>
  * Copyright (C) 2010 Vincent Untz <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-applet-info.h b/mate-panel/panel-applet-info.h
index fc999ffc..708ae043 100644
--- a/mate-panel/panel-applet-info.h
+++ b/mate-panel/panel-applet-info.h
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2010 Carlos Garcia Campos <[email protected]>
  * Copyright (C) 2010 Vincent Untz <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-applets-manager.c b/mate-panel/panel-applets-manager.c
index 6d93d04b..05ca399a 100644
--- a/mate-panel/panel-applets-manager.c
+++ b/mate-panel/panel-applets-manager.c
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2010 Carlos Garcia Campos <[email protected]>
  * Copyright (C) 2010 Vincent Untz <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-applets-manager.h b/mate-panel/panel-applets-manager.h
index 8c24d8eb..3f0ac69f 100644
--- a/mate-panel/panel-applets-manager.h
+++ b/mate-panel/panel-applets-manager.h
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2010 Carlos Garcia Campos <[email protected]>
  * Copyright (C) 2010 Vincent Untz <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-background.c b/mate-panel/panel-background.c
index 57a8dcd7..0197fb5e 100644
--- a/mate-panel/panel-background.c
+++ b/mate-panel/panel-background.c
@@ -2,6 +2,7 @@
  * panel-background.c: panel background rendering
  *
  * Copyright (C) 2002, 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-background.h b/mate-panel/panel-background.h
index 5ba81da4..9a9f5ced 100644
--- a/mate-panel/panel-background.h
+++ b/mate-panel/panel-background.h
@@ -2,6 +2,7 @@
  * panel-background.h: panel background rendering
  *
  * Copyright (C) 2002, 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-bindings.c b/mate-panel/panel-bindings.c
index 493de6ab..39310c5e 100644
--- a/mate-panel/panel-bindings.c
+++ b/mate-panel/panel-bindings.c
@@ -2,6 +2,7 @@
  * panel-bindings.c: panel keybindings support module
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-bindings.h b/mate-panel/panel-bindings.h
index 0f8cf29d..1abd803f 100644
--- a/mate-panel/panel-bindings.h
+++ b/mate-panel/panel-bindings.h
@@ -2,6 +2,7 @@
  * panel-bindings.h: panel keybindings support module
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-config-global.c b/mate-panel/panel-config-global.c
index 1e1f34de..b837f5f0 100644
--- a/mate-panel/panel-config-global.c
+++ b/mate-panel/panel-config-global.c
@@ -2,6 +2,7 @@
  * panel-config-global.c: panel global configuration module
  *
  * Copyright (C) 2001 - 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-config-global.h b/mate-panel/panel-config-global.h
index 44bf043f..d889016b 100644
--- a/mate-panel/panel-config-global.h
+++ b/mate-panel/panel-config-global.h
@@ -2,6 +2,7 @@
  * panel-config-global.h: panel global configuration module
  *
  * Copyright (C) 2001 - 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-context-menu.c b/mate-panel/panel-context-menu.c
index add9a485..ba459ac7 100644
--- a/mate-panel/panel-context-menu.c
+++ b/mate-panel/panel-context-menu.c
@@ -2,6 +2,7 @@
  * panel-context-menu.c: context menu for the panels
  *
  * Copyright (C) 2004 Vincent Untz
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-context-menu.h b/mate-panel/panel-context-menu.h
index 4b412fbf..f10bb1b5 100644
--- a/mate-panel/panel-context-menu.h
+++ b/mate-panel/panel-context-menu.h
@@ -2,6 +2,7 @@
  * panel-context-menu.h: context menu for the panels
  *
  * Copyright (C) 2004 Vincent Untz
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-ditem-editor.c b/mate-panel/panel-ditem-editor.c
index 827f6e67..9d22e54f 100644
--- a/mate-panel/panel-ditem-editor.c
+++ b/mate-panel/panel-ditem-editor.c
@@ -2,6 +2,7 @@
  * panel-ditem-editor.c:
  *
  * Copyright (C) 2004, 2006 Vincent Untz
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * The Mate Library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public License as
diff --git a/mate-panel/panel-ditem-editor.h b/mate-panel/panel-ditem-editor.h
index 4b0a13c1..6c5fd57b 100644
--- a/mate-panel/panel-ditem-editor.h
+++ b/mate-panel/panel-ditem-editor.h
@@ -2,6 +2,7 @@
  * panel-ditem-editor.h:
  *
  * Copyright (C) 2004, 2006 Vincent Untz
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * The Mate Library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public License as
diff --git a/mate-panel/panel-enums-gsettings.h b/mate-panel/panel-enums-gsettings.h
index 3f9a7562..bc8a9c42 100644
--- a/mate-panel/panel-enums-gsettings.h
+++ b/mate-panel/panel-enums-gsettings.h
@@ -2,6 +2,7 @@
  * panel-enums-gsettings.h:
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-enums.h b/mate-panel/panel-enums.h
index 3ba34320..9a5a4532 100644
--- a/mate-panel/panel-enums.h
+++ b/mate-panel/panel-enums.h
@@ -2,6 +2,7 @@
  * panel-enums.h:
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-force-quit.c b/mate-panel/panel-force-quit.c
index 4ed60fb8..5e38a1d2 100644
--- a/mate-panel/panel-force-quit.c
+++ b/mate-panel/panel-force-quit.c
@@ -2,6 +2,7 @@
  * panel-force-quit.c:
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
diff --git a/mate-panel/panel-force-quit.h b/mate-panel/panel-force-quit.h
index 7f67dc76..feeacc8a 100644
--- a/mate-panel/panel-force-quit.h
+++ b/mate-panel/panel-force-quit.h
@@ -2,6 +2,7 @@
  * panel-force-quit.h
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
diff --git a/mate-panel/panel-frame.c b/mate-panel/panel-frame.c
index 11ff9c85..75e46395 100644
--- a/mate-panel/panel-frame.c
+++ b/mate-panel/panel-frame.c
@@ -2,6 +2,7 @@
  * panel-frame.c: A frame which only draws certain edges.
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-frame.h b/mate-panel/panel-frame.h
index f73ebc15..8e165ea3 100644
--- a/mate-panel/panel-frame.h
+++ b/mate-panel/panel-frame.h
@@ -2,6 +2,7 @@
  * panel-frame.h: A frame which only draws certain edges.
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-globals.h b/mate-panel/panel-globals.h
index f0ae9f45..f9b3d7fd 100644
--- a/mate-panel/panel-globals.h
+++ b/mate-panel/panel-globals.h
@@ -2,6 +2,7 @@
  * panel-globals.h: panel global variables
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-layout.c b/mate-panel/panel-layout.c
index 92ffd660..d1710f9e 100644
--- a/mate-panel/panel-layout.c
+++ b/mate-panel/panel-layout.c
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2011 Novell, Inc.
  *               2012 Stefano Karapetsas
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-layout.h b/mate-panel/panel-layout.h
index bc86a4b1..1071dc2e 100644
--- a/mate-panel/panel-layout.h
+++ b/mate-panel/panel-layout.h
@@ -2,6 +2,7 @@
  * panel-layout.h: methods to load default panels from file
  *
  * Copyright (C) 2012 Stefano Karapetsas
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-lockdown.c b/mate-panel/panel-lockdown.c
index d0051082..2ab5eebf 100644
--- a/mate-panel/panel-lockdown.c
+++ b/mate-panel/panel-lockdown.c
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
 /*
  * Copyright (C) 2004 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-lockdown.h b/mate-panel/panel-lockdown.h
index a2e3703e..68c1a0bf 100644
--- a/mate-panel/panel-lockdown.h
+++ b/mate-panel/panel-lockdown.h
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
 /*
  * Copyright (C) 2004 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-menu-bar.c b/mate-panel/panel-menu-bar.c
index f2e71353..a00cf83c 100644
--- a/mate-panel/panel-menu-bar.c
+++ b/mate-panel/panel-menu-bar.c
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
  * Copyright (C) 2004 Vincent Untz
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-menu-bar.h b/mate-panel/panel-menu-bar.h
index 5c5f5c0e..f83bf1f1 100644
--- a/mate-panel/panel-menu-bar.h
+++ b/mate-panel/panel-menu-bar.h
@@ -2,6 +2,7 @@
  * panel-menu-bar.h: panel Applications/Places/Desktop menu bar
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-menu-button.c b/mate-panel/panel-menu-button.c
index 64d96945..9f02dd7e 100644
--- a/mate-panel/panel-menu-button.c
+++ b/mate-panel/panel-menu-button.c
@@ -2,6 +2,7 @@
  * panel-menu-button.c: panel menu button
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-menu-button.h b/mate-panel/panel-menu-button.h
index 829744b3..2a9d2d32 100644
--- a/mate-panel/panel-menu-button.h
+++ b/mate-panel/panel-menu-button.h
@@ -2,6 +2,7 @@
  * panel-menu-button.h: panel menu button
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-menu-items.c b/mate-panel/panel-menu-items.c
index 6247e5ad..42ab4200 100644
--- a/mate-panel/panel-menu-items.c
+++ b/mate-panel/panel-menu-items.c
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2005 Vincent Untz
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-menu-items.h b/mate-panel/panel-menu-items.h
index 054a7e4f..34cfbce4 100644
--- a/mate-panel/panel-menu-items.h
+++ b/mate-panel/panel-menu-items.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2005 Vincent Untz
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-modules.c b/mate-panel/panel-modules.c
index 918817a8..05c4bad7 100644
--- a/mate-panel/panel-modules.c
+++ b/mate-panel/panel-modules.c
@@ -2,6 +2,7 @@
  * panel-modules.c
  *
  * Copyright (C) 2010 Vincent Untz <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-modules.h b/mate-panel/panel-modules.h
index 50c0b0ad..0573a547 100644
--- a/mate-panel/panel-modules.h
+++ b/mate-panel/panel-modules.h
@@ -2,6 +2,7 @@
  * panel-modules.h
  *
  * Copyright (C) 2010 Vincent Untz <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-multimonitor.c b/mate-panel/panel-multimonitor.c
index 6ef71e97..532b31c3 100644
--- a/mate-panel/panel-multimonitor.c
+++ b/mate-panel/panel-multimonitor.c
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2001 George Lebl <[email protected]>
  *               2002 Sun Microsystems Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-multimonitor.h b/mate-panel/panel-multimonitor.h
index 13aa6472..aa10cda3 100644
--- a/mate-panel/panel-multimonitor.h
+++ b/mate-panel/panel-multimonitor.h
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2001 George Lebl <[email protected]>
  *               2002 Sun Microsystems Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-profile.c b/mate-panel/panel-profile.c
index a89a027d..bd6d3a07 100644
--- a/mate-panel/panel-profile.c
+++ b/mate-panel/panel-profile.c
@@ -2,6 +2,7 @@
  * panel-profile.c:
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-profile.h b/mate-panel/panel-profile.h
index 930d1ee4..6202d6c3 100644
--- a/mate-panel/panel-profile.h
+++ b/mate-panel/panel-profile.h
@@ -2,6 +2,7 @@
  * panel-profile.h:
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-properties-dialog.c b/mate-panel/panel-properties-dialog.c
index d2b5e007..3c1c634c 100644
--- a/mate-panel/panel-properties-dialog.c
+++ b/mate-panel/panel-properties-dialog.c
@@ -2,6 +2,7 @@
  * panel-properties-dialog.c:
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-properties-dialog.h b/mate-panel/panel-properties-dialog.h
index 98a9a94d..ba899008 100644
--- a/mate-panel/panel-properties-dialog.h
+++ b/mate-panel/panel-properties-dialog.h
@@ -2,6 +2,7 @@
  * panel-properties-dialog.h:
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-recent.c b/mate-panel/panel-recent.c
index 1caf570f..195cc7a0 100644
--- a/mate-panel/panel-recent.c
+++ b/mate-panel/panel-recent.c
@@ -3,6 +3,7 @@
  * panel-recent.c
  *
  * Copyright (C) 2002 James Willcox <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
diff --git a/mate-panel/panel-recent.h b/mate-panel/panel-recent.h
index 84aece44..e0afb6bd 100644
--- a/mate-panel/panel-recent.h
+++ b/mate-panel/panel-recent.h
@@ -2,6 +2,7 @@
  * panel-recent.h
  *
  * Copyright (C) 2002 James Willcox <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
diff --git a/mate-panel/panel-reset.c b/mate-panel/panel-reset.c
index cdeba7ed..4a101781 100644
--- a/mate-panel/panel-reset.c
+++ b/mate-panel/panel-reset.c
@@ -2,6 +2,7 @@
  * panel-reset.c
  *
  * Copyright (C) 2010 Perberos <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
diff --git a/mate-panel/panel-reset.h b/mate-panel/panel-reset.h
index f9b6e33a..33fd8012 100644
--- a/mate-panel/panel-reset.h
+++ b/mate-panel/panel-reset.h
@@ -2,6 +2,7 @@
  * panel-reset.h
  *
  * Copyright (C) 2010 Perberos <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
diff --git a/mate-panel/panel-run-dialog.c b/mate-panel/panel-run-dialog.c
index 8d9a1a17..f2be5ec0 100644
--- a/mate-panel/panel-run-dialog.c
+++ b/mate-panel/panel-run-dialog.c
@@ -2,6 +2,7 @@
  * panel-run-dialog.c:
  *
  * Copyright (C) 2003 Frank Worsley <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-run-dialog.h b/mate-panel/panel-run-dialog.h
index 49adc49c..b32ce992 100644
--- a/mate-panel/panel-run-dialog.h
+++ b/mate-panel/panel-run-dialog.h
@@ -2,6 +2,7 @@
  * panel-run-dialog.h:
  *
  * Copyright (C) 2003 Frank Worsley <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-separator.c b/mate-panel/panel-separator.c
index 1c2dce72..864d3107 100644
--- a/mate-panel/panel-separator.c
+++ b/mate-panel/panel-separator.c
@@ -2,6 +2,7 @@
  * panel-separator.c: panel "Separator" module
  *
  * Copyright (C) 2005 Carlos Garcia Campos <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-separator.h b/mate-panel/panel-separator.h
index 02ed13e5..d91cb1a9 100644
--- a/mate-panel/panel-separator.h
+++ b/mate-panel/panel-separator.h
@@ -2,6 +2,7 @@
  * panel-separator.h: panel "Separator" module
  *
  * Copyright (C) 2005 Carlos Garcia Campos <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-session.c b/mate-panel/panel-session.c
index e7a45995..ec13f135 100644
--- a/mate-panel/panel-session.c
+++ b/mate-panel/panel-session.c
@@ -2,6 +2,7 @@
  * panel-session.c: panel session management routines
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-session.h b/mate-panel/panel-session.h
index 7a029539..19899549 100644
--- a/mate-panel/panel-session.h
+++ b/mate-panel/panel-session.h
@@ -2,6 +2,7 @@
  * panel-session.h: panel session management routines
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-shell.c b/mate-panel/panel-shell.c
index affc20f9..321fdb57 100644
--- a/mate-panel/panel-shell.c
+++ b/mate-panel/panel-shell.c
@@ -5,6 +5,7 @@
  * Copyright (C) 2008 Red Hat, Inc.
  * Copyright (C) 2008 Novell, Inc.
  * Copyright (C) 2010 Carlos Garcia Campos <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-shell.h b/mate-panel/panel-shell.h
index 26ccbc24..0ef2eda9 100644
--- a/mate-panel/panel-shell.h
+++ b/mate-panel/panel-shell.h
@@ -4,6 +4,7 @@
  * Copyright (C) 2001 Ximian, Inc.
  * Copyright (C) 2008 Red Hat, Inc.
  * Copyright (C) 2008 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-stock-icons.c b/mate-panel/panel-stock-icons.c
index 836f7729..75784ccc 100644
--- a/mate-panel/panel-stock-icons.c
+++ b/mate-panel/panel-stock-icons.c
@@ -2,6 +2,7 @@
  * panel-stock-icons.c panel stock icons registration
  *
  * Copyright (C) 2002 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-stock-icons.h b/mate-panel/panel-stock-icons.h
index bc775572..a43ca699 100644
--- a/mate-panel/panel-stock-icons.h
+++ b/mate-panel/panel-stock-icons.h
@@ -2,6 +2,7 @@
  * panel-stock-icons.h: panel stock icons registration
  *
  * Copyright (C) 2002 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-struts.c b/mate-panel/panel-struts.c
index dc0958f5..cb45f69d 100644
--- a/mate-panel/panel-struts.c
+++ b/mate-panel/panel-struts.c
@@ -1,6 +1,7 @@
 /*
  * Copyright (C) 2003 Sun Microsystems, Inc.
  * Copyright (C) 2003,2004 Rob Adams
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-struts.h b/mate-panel/panel-struts.h
index 0b5e781c..4d7e49d0 100644
--- a/mate-panel/panel-struts.h
+++ b/mate-panel/panel-struts.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-test-applets.c b/mate-panel/panel-test-applets.c
index 4d0a4046..0a5598ee 100644
--- a/mate-panel/panel-test-applets.c
+++ b/mate-panel/panel-test-applets.c
@@ -7,6 +7,7 @@
  *
  * Copyright 2002 Sun Microsystems, Inc.
  *           2012 Stefano Karapetsas
+ * Copyright (C) 2012-2021 MATE Developers
  */
 
 #include <config.h>
diff --git a/mate-panel/panel-toplevel.c b/mate-panel/panel-toplevel.c
index 20b15e93..477fd101 100644
--- a/mate-panel/panel-toplevel.c
+++ b/mate-panel/panel-toplevel.c
@@ -4,6 +4,7 @@
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
  * Copyright (C) 2004 Rob Adams
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-toplevel.h b/mate-panel/panel-toplevel.h
index 206397da..907e47a2 100644
--- a/mate-panel/panel-toplevel.h
+++ b/mate-panel/panel-toplevel.h
@@ -2,6 +2,7 @@
  * panel-toplevel.h: The panel's toplevel window object.
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-util.c b/mate-panel/panel-util.c
index 093a0099..3e93b228 100644
--- a/mate-panel/panel-util.c
+++ b/mate-panel/panel-util.c
@@ -6,6 +6,7 @@
  * Copyright 2000,2001 Eazel, Inc.
  * Copyright 2001 George Lebl
  * Copyright 2002 Sun Microsystems Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * Authors: George Lebl
  *          Jacob Berkman
diff --git a/mate-panel/panel-widget.c b/mate-panel/panel-widget.c
index 079d62ee..4c9cd128 100644
--- a/mate-panel/panel-widget.c
+++ b/mate-panel/panel-widget.c
@@ -1,6 +1,7 @@
 /* Mate panel: panel widget
  * (C) 1997,1998,1999,2000 the Free Software Foundation
  * (C) 2000 Eazel, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * Authors:  George Lebl
  */
diff --git a/mate-panel/panel-widget.h b/mate-panel/panel-widget.h
index e84cc6c2..169bb652 100644
--- a/mate-panel/panel-widget.h
+++ b/mate-panel/panel-widget.h
@@ -1,5 +1,6 @@
 /* Mate panel: panel widget
  * (C) 1997-1998 the Free Software Foundation
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * Authors:  George Lebl
  */
diff --git a/mate-panel/panel-xutils.c b/mate-panel/panel-xutils.c
index 732f85ff..4d8b32a2 100644
--- a/mate-panel/panel-xutils.c
+++ b/mate-panel/panel-xutils.c
@@ -2,6 +2,7 @@
  * panel-xutils.c: X related utility methods.
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel-xutils.h b/mate-panel/panel-xutils.h
index 603cb4ba..8310c052 100644
--- a/mate-panel/panel-xutils.h
+++ b/mate-panel/panel-xutils.h
@@ -2,6 +2,7 @@
  * panel-xutils.h: X related utility methods.
  *
  * Copyright (C) 2003 Sun Microsystems, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/panel.c b/mate-panel/panel.c
index e5fd3940..d25103c2 100644
--- a/mate-panel/panel.c
+++ b/mate-panel/panel.c
@@ -1,6 +1,7 @@
 /* Mate panel: Initialization routines
  * (C) 1997,1998,1999,2000 the Free Software Foundation
  * (C) 2000 Eazel, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * Authors: Federico Mena
  *          Miguel de Icaza
diff --git a/mate-panel/wayland-backend.c b/mate-panel/wayland-backend.c
index 93e1ea9d..fc1b7484 100644
--- a/mate-panel/wayland-backend.c
+++ b/mate-panel/wayland-backend.c
@@ -2,6 +2,7 @@
  * wayland-backend.c: Support for running on Wayland compositors
  *
  * Copyright (C) 2019 William Wold
+ * Copyright (C) 2019-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/wayland-backend.h b/mate-panel/wayland-backend.h
index 7c4d6a67..0c597127 100644
--- a/mate-panel/wayland-backend.h
+++ b/mate-panel/wayland-backend.h
@@ -2,6 +2,7 @@
  * wayland-backend.h: Support for running on Wayland compositors
  *
  * Copyright (C) 2019 William Wold
+ * Copyright (C) 2019-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-panel/xstuff.c b/mate-panel/xstuff.c
index aebd9854..bffa507a 100644
--- a/mate-panel/xstuff.c
+++ b/mate-panel/xstuff.c
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2000, 2001 Eazel, Inc.
  *               2002 Sun Microsystems Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * Authors: George Lebl <[email protected]>
  *          Mark McLoughlin <[email protected]>