From 7a76222c203b68a9aa64b537a3e8cda45646a53a Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Wed, 21 Sep 2022 12:22:41 -0600
Subject: [PATCH] [gpos] in PairPos, always advance next-glyph by one only

This goes against the spec.

https://github.com/harfbuzz/harfbuzz/issues/3824
---
 src/OT/Layout/GPOS/PairPosFormat2.hh | 2 --
 src/OT/Layout/GPOS/PairSet.hh        | 2 --
 2 files changed, 4 deletions(-)

diff --git a/src/OT/Layout/GPOS/PairPosFormat2.hh b/src/OT/Layout/GPOS/PairPosFormat2.hh
index 83b093b98..b1b291530 100644
--- a/src/OT/Layout/GPOS/PairPosFormat2.hh
+++ b/src/OT/Layout/GPOS/PairPosFormat2.hh
@@ -243,8 +243,6 @@ struct PairPosFormat2_4
 
 
     buffer->idx = skippy_iter.idx;
-    if (len2)
-      buffer->idx++;
 
     return_trace (true);
   }
diff --git a/src/OT/Layout/GPOS/PairSet.hh b/src/OT/Layout/GPOS/PairSet.hh
index aa48d933c..e2de81d2a 100644
--- a/src/OT/Layout/GPOS/PairSet.hh
+++ b/src/OT/Layout/GPOS/PairSet.hh
@@ -128,8 +128,6 @@ struct PairSet
 
       if (applied_first || applied_second)
         buffer->unsafe_to_break (buffer->idx, pos + 1);
-      if (len2)
-        pos++;
 
       buffer->idx = pos;
       return_trace (true);