[HarfBuzz] harfbuzz: Branch 'master' - 2 commits

[Behdad Esfahbod]

 src/hb-aat-layout.cc |    1 +
 src/hb-aat-map.cc    |    8 ++++++++
 2 files changed, 9 insertions(+)

New commits:
commit 52a00cd87f63c8ab32413a1a9ce792a3e2ec84e2
Author: Behdad Esfahbod <behdad at behdad.org>
Date:   Wed Oct 31 19:05:53 2018 -0700

    [aat] Implement 'aalt' mapping
    
    Fixes https://github.com/harfbuzz/harfbuzz/issues/1160

diff --git a/src/hb-aat-map.cc b/src/hb-aat-map.cc
index f2736bfd..1ce1b12b 100644
--- a/src/hb-aat-map.cc
+++ b/src/hb-aat-map.cc
@@ -34,6 +34,14 @@
 void hb_aat_map_builder_t::add_feature (hb_tag_t tag,
 					unsigned int value)
 {
+  if (tag == HB_TAG ('a','a','l','t'))
+  {
+    feature_info_t *info = features.push();
+    info->type = 17/*kCharacterAlternativesType*/;
+    info->setting = value;
+    return;
+  }
+
   const hb_aat_feature_mapping_t *mapping = hb_aat_layout_find_feature_mapping (tag);
   if (!mapping) return;
 
commit 6e3ea269fa1fe0a3de7a8a13c6e853c91231808e
Author: Behdad Esfahbod <behdad at behdad.org>
Date:   Wed Oct 31 19:00:11 2018 -0700

    [aat] Add 'afrc' feature mapping
    
    https://github.com/harfbuzz/harfbuzz/issues/1342#issuecomment-434829028

diff --git a/src/hb-aat-layout.cc b/src/hb-aat-layout.cc
index b6bdb0be..d917c29c 100644
--- a/src/hb-aat-layout.cc
+++ b/src/hb-aat-layout.cc
@@ -41,6 +41,7 @@
  * when moving to this file. */
 static const hb_aat_feature_mapping_t feature_mappings[] =
 {
+  {HB_TAG ('a','f','r','c'),	11/*kFractionsType*/,			1/*kVerticalFractionsSelector*/,		0/*kNoFractionsSelector*/},
   {HB_TAG ('c','2','p','c'),	38/*kUpperCaseType*/,			2/*kUpperCasePetiteCapsSelector*/,		0/*kDefaultUpperCaseSelector*/},
   {HB_TAG ('c','2','s','c'),	38/*kUpperCaseType*/,			1/*kUpperCaseSmallCapsSelector*/,		0/*kDefaultUpperCaseSelector*/},
   {HB_TAG ('c','a','l','t'),	36/*kContextualAlternatesType*/,	0/*kContextualAlternatesOnSelector*/,		1/*kContextualAlternatesOffSelector*/},