From 2980c0d60cb067d7958abe5924be5c455b4adba3 Mon Sep 17 00:00:00 2001
From: bruvzg <7645683+bruvzg@users.noreply.github.com>
Date: Thu, 4 Aug 2022 08:16:56 +0300
Subject: HarfBuzz: Update to version 5.1.0, use new
 FLAG_SAFE_TO_INSERT_TATWEEL flag to improve justification.

---
 .../harfbuzz/src/OT/Layout/GSUB/SingleSubstFormat2.hh     | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'thirdparty/harfbuzz/src/OT/Layout/GSUB/SingleSubstFormat2.hh')

diff --git a/thirdparty/harfbuzz/src/OT/Layout/GSUB/SingleSubstFormat2.hh b/thirdparty/harfbuzz/src/OT/Layout/GSUB/SingleSubstFormat2.hh
index 386419a2a5..fb1e90d03e 100644
--- a/thirdparty/harfbuzz/src/OT/Layout/GSUB/SingleSubstFormat2.hh
+++ b/thirdparty/harfbuzz/src/OT/Layout/GSUB/SingleSubstFormat2.hh
@@ -68,8 +68,23 @@ struct SingleSubstFormat2_4
 
     if (unlikely (index >= substitute.len)) return_trace (false);
 
+    if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ())
+    {
+      c->buffer->sync_so_far ();
+      c->buffer->message (c->font,
+			  "replacing glyph at %d (single substitution)",
+			  c->buffer->idx);
+    }
+
     c->replace_glyph (substitute[index]);
 
+    if (HB_BUFFER_MESSAGE_MORE && c->buffer->messaging ())
+    {
+      c->buffer->message (c->font,
+			  "replaced glyph at %d (single substitution)",
+			  c->buffer->idx - 1);
+    }
+
     return_trace (true);
   }
 
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