[style] Rename HB_STYLE_TAG_SLANT to HB_STYLE_TAG_SLANT_ANGLE
diff --git a/src/hb-style.cc b/src/hb-style.cc
index 9df0f32..f22455f 100644
--- a/src/hb-style.cc
+++ b/src/hb-style.cc
@@ -42,7 +42,7 @@
  * be interpreted as (fully) italic.
  * @HB_STYLE_TAG_OPTICAL_SIZE: Used to vary design to suit different text sizes.
  * Non-zero. Values can be interpreted as text size, in points.
- * @HB_STYLE_TAG_SLANT: Used to vary between upright and slanted text. Values
+ * @HB_STYLE_TAG_SLANT_ANGLE: Used to vary between upright and slanted text. Values
  * must be greater than -90 and less than +90. Values can be interpreted as
  * the angle, in counter-clockwise degrees, of oblique slant from whatever the
  * designer considers to be upright for that font design.
@@ -58,10 +58,11 @@
  *
  * Since: EXPERIMENTAL
  **/
-typedef enum {
+typedef enum
+{
   HB_STYLE_TAG_ITALIC		= HB_TAG ('i','t','a','l'),
   HB_STYLE_TAG_OPTICAL_SIZE	= HB_TAG ('o','p','s','z'),
-  HB_STYLE_TAG_SLANT		= HB_TAG ('s','l','n','t'),
+  HB_STYLE_TAG_SLANT_ANGLE	= HB_TAG ('s','l','n','t'),
   HB_STYLE_TAG_WIDTH		= HB_TAG ('w','d','t','h'),
   HB_STYLE_TAG_WEIGHT		= HB_TAG ('w','g','h','t'),
 
@@ -119,7 +120,7 @@
 	   ? design / 10.
 	   : 12.f;
   }
-  case HB_STYLE_TAG_SLANT:
+  case HB_STYLE_TAG_SLANT_ANGLE:
     return face->table.post->table->italicAngle.to_float ();
   case HB_STYLE_TAG_WIDTH:
     return face->table.OS2->has_data ()
diff --git a/test/api/test-style.c b/test/api/test-style.c
index 7ab66d1..d522fbe 100644
--- a/test/api/test-style.c
+++ b/test/api/test-style.c
@@ -33,7 +33,7 @@
 
 #define HB_STYLE_TAG_ITALIC		HB_TAG ('i','t','a','l')
 #define HB_STYLE_TAG_OPTICAL_SIZE	HB_TAG ('o','p','s','z')
-#define HB_STYLE_TAG_SLANT		HB_TAG ('s','l','n','t')
+#define HB_STYLE_TAG_SLANT_ANGLE	HB_TAG ('s','l','n','t')
 #define HB_STYLE_TAG_WIDTH		HB_TAG ('w','d','t','h')
 #define HB_STYLE_TAG_WEIGHT		HB_TAG ('w','g','h','t')
 
@@ -44,7 +44,7 @@
 
   assert_cmpfloat (hb_style_get_value (empty, HB_STYLE_TAG_ITALIC), 0);
   assert_cmpfloat (hb_style_get_value (empty, HB_STYLE_TAG_OPTICAL_SIZE), 12);
-  assert_cmpfloat (hb_style_get_value (empty, HB_STYLE_TAG_SLANT), 0);
+  assert_cmpfloat (hb_style_get_value (empty, HB_STYLE_TAG_SLANT_ANGLE), 0);
   assert_cmpfloat (hb_style_get_value (empty, HB_STYLE_TAG_WIDTH), 100);
   assert_cmpfloat (hb_style_get_value (empty, HB_STYLE_TAG_WEIGHT), 400);
 }
@@ -57,7 +57,7 @@
 
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
-  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
+  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT_ANGLE), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 400);
 
@@ -73,7 +73,7 @@
 
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
-  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
+  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT_ANGLE), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 389.34f); /* its default weight */
   assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 0);
@@ -82,7 +82,7 @@
 
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
-  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
+  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT_ANGLE), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 200);
   assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 0);
@@ -91,7 +91,7 @@
 
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
-  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
+  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT_ANGLE), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 300);
   assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 0);
@@ -100,7 +100,7 @@
 
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
-  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
+  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT_ANGLE), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 400);
   assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 0);
@@ -109,7 +109,7 @@
 
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
-  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
+  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT_ANGLE), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT),600);
   assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 0);
@@ -118,7 +118,7 @@
 
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
-  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
+  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT_ANGLE), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 700);
   assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 0);
@@ -127,7 +127,7 @@
 
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
-  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
+  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT_ANGLE), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 900);
   assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 0);
@@ -136,7 +136,7 @@
 
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
-  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
+  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT_ANGLE), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 900);
   assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 50);
@@ -145,7 +145,7 @@
 
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_ITALIC), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_OPTICAL_SIZE), 12);
-  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT), 0);
+  assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_SLANT_ANGLE), 0);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WIDTH), 100);
   assert_cmpfloat (hb_style_get_value (font, HB_STYLE_TAG_WEIGHT), 900);
   assert_cmpfloat (hb_style_get_value (font, (hb_style_tag_t) HB_TAG ('C','N','T','R')), 100);