From 3be73365a53506201ff1ea27b0e17fd2fd633a9e Mon Sep 17 00:00:00 2001
From: Khaled Hosny <khaledhosny@eglug.org>
Date: Tue, 26 Feb 2019 18:44:57 +0200
Subject: [PATCH] [feaLib] Reverse chain need not handle subtable

---
 Lib/fontTools/feaLib/builder.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Lib/fontTools/feaLib/builder.py b/Lib/fontTools/feaLib/builder.py
index fc37de678..c70dca546 100644
--- a/Lib/fontTools/feaLib/builder.py
+++ b/Lib/fontTools/feaLib/builder.py
@@ -1494,6 +1494,10 @@ class ReverseChainSingleSubstBuilder(LookupBuilder):
             subtables.append(st)
         return self.buildLookup_(subtables)
 
+    def add_subtable_break(self, location):
+        # Nothing to do here, each substitution is in its own subtable.
+        pass
+
 
 class SingleSubstBuilder(LookupBuilder):
     def __init__(self, font, location):