diff --git a/src/font.c b/src/font.c
index eaf2ac0a84e2ceb7a503fc658aab9c319e267e73..ce6d26e5de1989a015ed4ec4625b7dfc63d78987 100644
--- a/src/font.c
+++ b/src/font.c
@@ -2569,3 +2569,6 @@ syms_of_font ()
   syms_of_atmfont ();
 #endif	/* MAC_OS */
 }
+
+/* arch-tag: 74c9475d-5976-4c93-a327-942ae3072846
+   (do not change this comment) */
diff --git a/src/font.h b/src/font.h
index 3af90f5ddc80cbee0ade687ea6aaf8cb3ecaa3c4..3e84e29801520ea2c9188c936b62678527e29257 100644
--- a/src/font.h
+++ b/src/font.h
@@ -477,3 +477,6 @@ extern struct font_driver atmfont_driver;
 #endif	/* MAC_OS */
 
 #endif	/* not EMACS_FONT_H */
+
+/* arch-tag: 3b7260c3-5bec-4d6b-a0db-95c1b431b1a2
+   (do not change this comment) */
diff --git a/src/ftfont.c b/src/ftfont.c
index fff8dd72a494f9b4d8476db4e8c7e589538bcf6c..184ef2cba494d0a944c6bfa14c24a5279c783216 100644
--- a/src/ftfont.c
+++ b/src/ftfont.c
@@ -729,3 +729,6 @@ syms_of_ftfont ()
   ftfont_driver.type = Qfreetype;
   register_font_driver (&ftfont_driver, NULL);
 }
+
+/* arch-tag: 7cfa432c-33a6-4988-83d2-a82ed8604aca
+   (do not change this comment) */
diff --git a/src/ftxfont.c b/src/ftxfont.c
index af6a96f706029d41b576ac0d043cd533307d43a9..4e91bd508955d41e2feadf73f675d4040d0a2265 100644
--- a/src/ftxfont.c
+++ b/src/ftxfont.c
@@ -344,3 +344,6 @@ syms_of_ftxfont ()
 
   register_font_driver (&ftxfont_driver, NULL);
 }
+
+/* arch-tag: 59bd3469-5330-413f-b29d-1aa36492abe8
+   (do not change this comment) */
diff --git a/src/xfont.c b/src/xfont.c
index 463db58b11cb6886fb56c3328533d5ecb7340600..e552e37709f42507f062b59fa37c31957845d82d 100644
--- a/src/xfont.c
+++ b/src/xfont.c
@@ -866,3 +866,6 @@ syms_of_xfont ()
   xfont_driver.type = Qx;
   register_font_driver (&xfont_driver, NULL);
 }
+
+/* arch-tag: 23c5f366-a5ee-44b7-a3b7-90d6da7fd749
+   (do not change this comment) */
diff --git a/src/xftfont.c b/src/xftfont.c
index f06bf6bd41e17a20166e2b6dad085a962e8ff4d6..d4d8ab46bc84a55d82ea9df5e36ef1d9c3e65b67 100644
--- a/src/xftfont.c
+++ b/src/xftfont.c
@@ -501,3 +501,6 @@ syms_of_xftfont ()
 
   register_font_driver (&xftfont_driver, NULL);
 }
+
+/* arch-tag: 64ec61bf-7c8e-4fe6-b953-c6a85d5e1605
+   (do not change this comment) */