From 2e5c75b061a98e8d225d1c3cd0f1f859b7f9a345 Mon Sep 17 00:00:00 2001
From: Werner Lemberg <wl@gnu.org>
Date: Thu, 12 Mar 2015 06:25:25 +0100
Subject: [PATCH] Synchronize with FreeType.

This corresponds to commit d3284462c3f227a4bc396fa9f3b716e46d43f5c8,
`[autofit] Add support for Arabic script.'.
---
 lib/tablue.dat            | 10 ++++++++++
 lib/taranges.c            | 11 +++++++++++
 lib/tastyles.h            |  8 ++++++++
 lib/ttfautohint-scripts.h |  5 +++++
 4 files changed, 34 insertions(+)

diff --git a/lib/tablue.dat b/lib/tablue.dat
index 415d5d6..b20dd86 100644
--- a/lib/tablue.dat
+++ b/lib/tablue.dat
@@ -70,6 +70,11 @@
 
 TA_BLUE_STRING_ENUM TA_BLUE_STRINGS_ARRAY TA_BLUE_STRING_MAX_LEN:
 
+  TA_BLUE_STRING_ARABIC_TOP
+    "ا إ ل ك ط ظ"
+  TA_BLUE_STRING_ARABIC_JOIN
+    "ت ث ط ظ ك"
+
   TA_BLUE_STRING_CYRILLIC_CAPITAL_TOP
     "БВЕПЗОСЭ"
   TA_BLUE_STRING_CYRILLIC_CAPITAL_BOTTOM
@@ -211,6 +216,11 @@ TA_BLUE_STRING_ENUM TA_BLUE_STRINGS_ARRAY TA_BLUE_STRING_MAX_LEN:
 
 TA_BLUE_STRINGSET_ENUM TA_BLUE_STRINGSETS_ARRAY TA_BLUE_STRINGSET_MAX_LEN:
 
+  TA_BLUE_STRINGSET_ARAB
+    { TA_BLUE_STRING_ARABIC_TOP,   TA_BLUE_PROPERTY_LATIN_TOP }
+    { TA_BLUE_STRING_ARABIC_JOIN,  0                          }
+    { TA_BLUE_STRING_MAX,          0                          }
+
   TA_BLUE_STRINGSET_CYRL
     { TA_BLUE_STRING_CYRILLIC_CAPITAL_TOP,     TA_BLUE_PROPERTY_LATIN_TOP        }
     { TA_BLUE_STRING_CYRILLIC_CAPITAL_BOTTOM,  0                                 }
diff --git a/lib/taranges.c b/lib/taranges.c
index bb505f6..60c60d6 100644
--- a/lib/taranges.c
+++ b/lib/taranges.c
@@ -20,6 +20,17 @@
 #include "taranges.h"
 
 
+const TA_Script_UniRangeRec ta_arab_uniranges[] =
+{
+  TA_UNIRANGE_REC( 0x0600UL,  0x06FFUL), /* Arabic */
+  TA_UNIRANGE_REC( 0x0750UL,  0x07FFUL), /* Arabic Supplement */
+  TA_UNIRANGE_REC( 0x08A0UL,  0x08FFUL), /* Arabic Extended-A */
+  TA_UNIRANGE_REC( 0xFB50UL,  0xFDFFUL), /* Arabic Presentation Forms-A */
+  TA_UNIRANGE_REC( 0xFE70UL,  0xFEFFUL), /* Arabic Presentation Forms-B */
+  TA_UNIRANGE_REC(0x1EE00UL, 0x1EEFFUL), /* Arabic Mathematical Alphabetic Symbols */
+  TA_UNIRANGE_REC(      0UL,       0UL)
+};
+
 const TA_Script_UniRangeRec ta_cyrl_uniranges[] =
 {
   TA_UNIRANGE_REC(0x0400UL, 0x04FFUL), /* Cyrillic */
diff --git a/lib/tastyles.h b/lib/tastyles.h
index 3670092..31e9862 100644
--- a/lib/tastyles.h
+++ b/lib/tastyles.h
@@ -84,6 +84,14 @@
                       "default", \
                       DEFAULT)
 
+
+STYLE(arab_dflt, ARAB_DFLT,
+      "Arabic default style",
+      TA_WRITING_SYSTEM_LATIN,
+      TA_SCRIPT_ARAB,
+      TA_BLUE_STRINGSET_ARAB,
+      TA_COVERAGE_DEFAULT)
+
 META_STYLE_LATIN(cyrl, CYRL, "Cyrillic")
 
 STYLE(deva_dflt, DEVA_DFLT,
diff --git a/lib/ttfautohint-scripts.h b/lib/ttfautohint-scripts.h
index e055855..4befa79 100644
--- a/lib/ttfautohint-scripts.h
+++ b/lib/ttfautohint-scripts.h
@@ -28,6 +28,11 @@
  * the standard width of stems).
  */
 
+SCRIPT(arab, ARAB,
+       "Arabic",
+       HB_SCRIPT_ARABIC,
+       0x644, 0x62D, 0x640) /* ل ح ـ */
+
 SCRIPT(cyrl, CYRL,
        "Cyrillic",
        HB_SCRIPT_CYRILLIC,
-- 
2.11.4.GIT