From a4a7a623893fd4c8db3a987d81a1c80243006f1e Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Fri, 2 Nov 2018 11:16:43 -0400
Subject: [PATCH] [kern] Add buffer message

---
 src/hb-ot-kern-table.hh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/hb-ot-kern-table.hh b/src/hb-ot-kern-table.hh
index 63551d313..891f3eab9 100644
--- a/src/hb-ot-kern-table.hh
+++ b/src/hb-ot-kern-table.hh
@@ -483,7 +483,12 @@ struct kern
 
       hb_kern_machine_t<accelerator_t> machine (*this);
 
+      if (!buffer->message (font, "start kern table"))
+        return;
+
       machine.kern (font, buffer, kern_mask);
+
+      (void) buffer->message (font, "end kern table");
     }
 
     private: