From 298c46afbfd48f014243be7d3e6dbba5e69d242d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dominik=20R=C3=B6ttsches?= <drott@chromium.org>
Date: Fri, 24 Jan 2020 12:11:07 +0200
Subject: [PATCH] Only prefer AAT morx for horizontal layout

Fixes #2124.
---
 src/hb-ot-shape.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/hb-ot-shape.cc b/src/hb-ot-shape.cc
index 874338791..17695011b 100644
--- a/src/hb-ot-shape.cc
+++ b/src/hb-ot-shape.cc
@@ -70,7 +70,8 @@ hb_ot_shape_planner_t::hb_ot_shape_planner_t (hb_face_t                     *fac
 						map (face, props),
 						aat_map (face, props)
 #ifndef HB_NO_AAT_SHAPE
-						, apply_morx (hb_aat_layout_has_substitution (face))
+                        /* https://github.com/harfbuzz/harfbuzz/issues/2124 */
+						, apply_morx (HB_DIRECTION_IS_HORIZONTAL(props->direction) && hb_aat_layout_has_substitution (face))
 #endif
 {
   shaper = hb_ot_shape_complex_categorize (this);