From e9703ea37a471fb1f61f57e644c78a6a411ad5d6 Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Sat, 15 Aug 2020 15:28:40 -0400
Subject: Speed up font format filtering

We were needlessly duplicating patters when we
could have just referenced them.
---
 pango/pangofc-fontmap.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pango/pangofc-fontmap.c b/pango/pangofc-fontmap.c
index ec504094..6d7ae3aa 100644
--- a/pango/pangofc-fontmap.c
+++ b/pango/pangofc-fontmap.c
@@ -848,7 +848,10 @@ filter_fontset_by_format (FcFontSet *fontset)
   for (i = 0; i < fontset->nfont; i++)
     {
       if (pango_fc_is_supported_font_format (fontset->fonts[i]))
-        FcFontSetAdd (result, FcPatternDuplicate (fontset->fonts[i]));
+        {
+          FcPatternReference (fontset->fonts[i]);
+          FcFontSetAdd (result, fontset->fonts[i]);
+        }
     }
 
   return result;
-- 
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