From 59e04e42312293c30714a666c4479e209aec3c0e Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Wed, 7 Nov 2018 00:25:48 -0500
Subject: [PATCH] [kern/kerx] Fix cursive joining
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Tested with Waseem TTC:

$ hb-shape Waseem.ttc جحخج
[F1Jeem_R2=3@0,180+479|M1Khah_L2_R2=2@0,682+403|M1Hah_L2_R2=1@0,1184+403|I1Jeem_L2=0@0,1184+744]
---
 src/hb-aat-layout-kerx-table.hh | 2 ++
 src/hb-ot-kern-table.hh         | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/src/hb-aat-layout-kerx-table.hh b/src/hb-aat-layout-kerx-table.hh
index efbe7ed3a..6f63aa408 100644
--- a/src/hb-aat-layout-kerx-table.hh
+++ b/src/hb-aat-layout-kerx-table.hh
@@ -284,6 +284,8 @@ struct KerxSubTableFormat1
 	}
 	depth = 0;
       }
+      else
+	buffer->pos[buffer->idx].y_offset += c->font->em_scale_y (crossOffset);
 
       return true;
     }
diff --git a/src/hb-ot-kern-table.hh b/src/hb-ot-kern-table.hh
index ec7ce929f..b8006005f 100644
--- a/src/hb-ot-kern-table.hh
+++ b/src/hb-ot-kern-table.hh
@@ -334,6 +334,8 @@ struct KernSubTableFormat1
 	}
 	depth = 0;
       }
+      else
+	buffer->pos[buffer->idx].y_offset += c->font->em_scale_y (crossOffset);
 
       return true;
     }