From 44b6180e82d12d9e99fae75b124a00977bc60a21 Mon Sep 17 00:00:00 2001
From: Werner Lemberg <wl@gnu.org>
Date: Sun, 3 Nov 2013 08:35:55 +0100
Subject: [PATCH] Adjust master glyph coverage table only once.

---
 lib/ta.h          | 2 +-
 lib/taglyf.c      | 5 ++++-
 lib/ttfautohint.c | 3 ++-
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/lib/ta.h b/lib/ta.h
index 018a990..ad41713 100644
--- a/lib/ta.h
+++ b/lib/ta.h
@@ -312,7 +312,7 @@ TA_sfnt_create_glyf_data(SFNT* sfnt,
 FT_Error
 TA_sfnt_handle_coverage(SFNT* sfnt,
                         FONT* font);
-void
+FT_Bool
 TA_sfnt_adjust_master_coverage(SFNT* sfnt,
                                FONT* font);
 #if 0
diff --git a/lib/taglyf.c b/lib/taglyf.c
index 4678dc0..cb91584 100644
--- a/lib/taglyf.c
+++ b/lib/taglyf.c
@@ -1278,7 +1278,7 @@ Exit:
 }
 
 
-void
+FT_Bool
 TA_sfnt_adjust_master_coverage(SFNT* sfnt,
                                FONT* font)
 {
@@ -1306,7 +1306,10 @@ TA_sfnt_adjust_master_coverage(SFNT* sfnt,
         gscripts[nn] |= master_globals->font->fallback_script;
       }
     }
+    return 1; /* master coverage adjusted */
   }
+  else
+    return 0;
 }
 
 
diff --git a/lib/ttfautohint.c b/lib/ttfautohint.c
index 567018e..29fec0a 100644
--- a/lib/ttfautohint.c
+++ b/lib/ttfautohint.c
@@ -506,7 +506,8 @@ No_check:
       SFNT* sfnt = &font->sfnts[i];
 
 
-      TA_sfnt_adjust_master_coverage(sfnt, font);
+      if (TA_sfnt_adjust_master_coverage(sfnt, font))
+        break;
     }
   }
 
-- 
2.11.4.GIT