From bfd7548e243ab92ed02e66c95d244c78dd6e622b Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Tue, 10 Jan 2023 13:31:58 -0700
Subject: [PATCH] [aat] Optimize feature-range application

---
 src/hb-aat-layout-morx-table.hh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/hb-aat-layout-morx-table.hh b/src/hb-aat-layout-morx-table.hh
index a68ce1bf8..d9c9b39d7 100644
--- a/src/hb-aat-layout-morx-table.hh
+++ b/src/hb-aat-layout-morx-table.hh
@@ -1021,7 +1021,8 @@ struct Chain
     {
       bool reverse;
 
-      if (c->range_flags->length == 1 && !(subtable->subFeatureFlags & (*c->range_flags)[0].flags))
+      if (hb_none (hb_iter (c->range_flags) |
+		   hb_map ([&subtable] (const hb_aat_map_t::range_flags_t _) -> bool { return subtable->subFeatureFlags & (_.flags); })))
 	goto skip;
       c->subtable_flags = subtable->subFeatureFlags;