build fixes

3 files changed, 9227 insertions, 2 deletions

diff --git a/firefox.spec b/firefox.spec
index 9405c95..46ab661 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -128,6 +128,8 @@ Patch223:        rhbz-1291190-appchooser-crash.patch
 
 # Upstream patches
 Patch301:        mozilla-1205199.patch
+Patch302:        mozilla-1228540.patch
+Patch303:        mozilla-1228540-1.patch
 
 # Gtk3 upstream patches
 
@@ -278,6 +280,8 @@ cd %{tarballdir}
 %patch223 -p1 -b .appchooser-crash
 
 %patch301 -p1 -b .1205199
+%patch302 -p1 -b .1228540
+%patch303 -p1 -b .1228540-1
 
 %patch500 -p1
 
@@ -730,6 +734,7 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 %{mozappdir}/browser/components/*.so
 %{mozappdir}/browser/components/components.manifest
 %{mozappdir}/browser/defaults/preferences/firefox-redhat-default-prefs.js
+%{mozappdir}/browser/features/loop@mozilla.org.xpi
 %attr(644, root, root) %{mozappdir}/browser/blocklist.xml
 %dir %{mozappdir}/browser/extensions
 %{mozappdir}/browser/extensions/*
@@ -762,8 +767,6 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 %if %{toolkit_gtk3}
 %{mozappdir}/gtk2/*.so
 %endif
-%{mozappdir}/chrome.manifest
-%{mozappdir}/components
 %{mozappdir}/defaults/pref/channel-prefs.js
 %{mozappdir}/dependentlibs.list
 %{mozappdir}/dictionaries
diff --git a/mozilla-1228540-1.patch b/mozilla-1228540-1.patch
new file mode 100644
index 0000000..be6ffc3
--- /dev/null
+++ b/mozilla-1228540-1.patch
@@ -0,0 +1,84 @@
+# HG changeset patch
+# User Jonathan Kew <jkew@mozilla.com>
+# Date 1452675061 0
+#      Wed Jan 13 08:51:01 2016 +0000
+# Node ID cf699e95e98829b465b64a7e0281d95ec851ce8c
+# Parent  3c9f357598e86c2f593e9895d5725bf3498f8f5a
+Bug 1228540 - pt 2 - Remove our HBGetGlyphHOrigin callback, as the default behavior is sufficient.
+
+diff --git a/gfx/thebes/gfxHarfBuzzShaper.cpp b/gfx/thebes/gfxHarfBuzzShaper.cpp
+--- a/gfx/thebes/gfxHarfBuzzShaper.cpp
++++ b/gfx/thebes/gfxHarfBuzzShaper.cpp
+@@ -349,27 +349,16 @@ gfxHarfBuzzShaper::HBGetGlyphVAdvance(hb
+         static_cast<const gfxHarfBuzzShaper::FontCallbackData*>(font_data);
+     // Currently, we don't offer gfxFont subclasses a method to override this
+     // and provide hinted platform-specific vertical advances (analogous to the
+     // GetGlyphWidth method for horizontal advances). If that proves necessary,
+     // we'll add a new gfxFont method and call it from here.
+     return fcd->mShaper->GetGlyphVAdvance(glyph);
+ }
+ 
+-/* static */
+-hb_bool_t
+-gfxHarfBuzzShaper::HBGetGlyphHOrigin(hb_font_t *font, void *font_data,
+-                                     hb_codepoint_t glyph,
+-                                     hb_position_t *x, hb_position_t *y,
+-                                     void *user_data)
+-{
+-    // We work in horizontal coordinates, so no origin adjustment needed here.
+-    return true;
+-}
+-
+ struct VORG {
+     AutoSwap_PRUint16 majorVersion;
+     AutoSwap_PRUint16 minorVersion;
+     AutoSwap_PRInt16  defaultVertOriginY;
+     AutoSwap_PRUint16 numVertOriginYMetrics;
+ };
+ 
+ struct VORGrec {
+@@ -1262,19 +1251,16 @@ gfxHarfBuzzShaper::Initialize()
+         hb_font_funcs_set_glyph_func(sHBFontFuncs, HBGetGlyph,
+                                      nullptr, nullptr);
+         hb_font_funcs_set_glyph_h_advance_func(sHBFontFuncs,
+                                                HBGetGlyphHAdvance,
+                                                nullptr, nullptr);
+         hb_font_funcs_set_glyph_v_advance_func(sHBFontFuncs,
+                                                HBGetGlyphVAdvance,
+                                                nullptr, nullptr);
+-        hb_font_funcs_set_glyph_h_origin_func(sHBFontFuncs,
+-                                              HBGetGlyphHOrigin,
+-                                              nullptr, nullptr);
+         hb_font_funcs_set_glyph_v_origin_func(sHBFontFuncs,
+                                               HBGetGlyphVOrigin,
+                                               nullptr, nullptr);
+         hb_font_funcs_set_glyph_extents_func(sHBFontFuncs,
+                                              HBGetGlyphExtents,
+                                              nullptr, nullptr);
+         hb_font_funcs_set_glyph_contour_point_func(sHBFontFuncs,
+                                                    HBGetContourPoint,
+diff --git a/gfx/thebes/gfxHarfBuzzShaper.h b/gfx/thebes/gfxHarfBuzzShaper.h
+--- a/gfx/thebes/gfxHarfBuzzShaper.h
++++ b/gfx/thebes/gfxHarfBuzzShaper.h
+@@ -56,21 +56,16 @@ public:
+                        hb_codepoint_t glyph, void *user_data);
+ 
+     // get harfbuzz vertical advance in 16.16 fixed point format.
+     static hb_position_t
+     HBGetGlyphVAdvance(hb_font_t *font, void *font_data,
+                        hb_codepoint_t glyph, void *user_data);
+ 
+     static hb_bool_t
+-    HBGetGlyphHOrigin(hb_font_t *font, void *font_data,
+-                      hb_codepoint_t glyph,
+-                      hb_position_t *x, hb_position_t *y,
+-                      void *user_data);
+-    static hb_bool_t
+     HBGetGlyphVOrigin(hb_font_t *font, void *font_data,
+                       hb_codepoint_t glyph,
+                       hb_position_t *x, hb_position_t *y,
+                       void *user_data);
+ 
+     hb_position_t GetHKerning(uint16_t aFirstGlyph,
+                               uint16_t aSecondGlyph) const;
+ 
diff --git a/mozilla-1228540.patch b/mozilla-1228540.patch
new file mode 100644
index 0000000..3fac3de
--- /dev/null
+++ b/mozilla-1228540.patch
@@ -0,0 +1,9138 @@
+# HG changeset patch
+# User Jonathan Kew <jkew@mozilla.com>
+# Date 1452639380 0
+#      Tue Jan 12 22:56:20 2016 +0000
+# Node ID 3c9f357598e86c2f593e9895d5725bf3498f8f5a
+# Parent  e790bba372f14241addda469a4bdb7ab00786ab3
+Bug 1228540 - Update harfbuzz to release 1.1.3.
+
+diff --git a/gfx/harfbuzz/src/Makefile.am b/gfx/harfbuzz/src/Makefile.am
+--- a/gfx/harfbuzz/src/Makefile.am
++++ b/gfx/harfbuzz/src/Makefile.am
+@@ -43,16 +43,17 @@ HBSOURCES =  \
+ 	hb-open-type-private.hh \
+ 	hb-ot-cmap-table.hh \
+ 	hb-ot-glyf-table.hh \
+ 	hb-ot-head-table.hh \
+ 	hb-ot-hhea-table.hh \
+ 	hb-ot-hmtx-table.hh \
+ 	hb-ot-maxp-table.hh \
+ 	hb-ot-name-table.hh \
++	hb-ot-os2-table.hh \
+ 	hb-ot-tag.cc \
+ 	hb-private.hh \
+ 	hb-set-private.hh \
+ 	hb-set.cc \
+ 	hb-shape.cc \
+ 	hb-shape-plan-private.hh \
+ 	hb-shape-plan.cc \
+ 	hb-shaper-list.hh \
+@@ -387,17 +388,24 @@ dist_check_SCRIPTS = \
+ 	check-defs.sh \
+ 	check-header-guards.sh \
+ 	check-includes.sh \
+ 	check-libstdc++.sh \
+ 	check-static-inits.sh \
+ 	check-symbols.sh \
+ 	$(NULL)
+ 
+-TESTS = $(dist_check_SCRIPTS)
++check_PROGRAMS = \
++	test-ot-tag \
++	$(NULL)
++test_ot_tag_SOURCES = hb-ot-tag.cc
++test_ot_tag_CPPFLAGS = $(HBCFLAGS) -DMAIN
++test_ot_tag_LDADD = libharfbuzz.la $(HBLIBS)
++
++TESTS = $(dist_check_SCRIPTS) $(check_PROGRAMS)
+ TESTS_ENVIRONMENT = \
+ 	srcdir="$(srcdir)" \
+ 	MAKE="$(MAKE) $(AM_MAKEFLAGS)" \
+ 	HBSOURCES="$(HBSOURCES)" \
+ 	HBHEADERS="$(HBHEADERS) $(HBNODISTHEADERS)" \
+ 	$(NULL)
+ 
+ if HAVE_INTROSPECTION
+@@ -414,16 +422,17 @@ HarfBuzz_0_0_gir_CFLAGS = \
+ 	$(INCLUDES) \
+ 	$(HBCFLAGS) \
+ 	-DHB_H \
+ 	-DHB_H_IN \
+ 	-DHB_OT_H \
+ 	-DHB_OT_H_IN \
+ 	-DHB_GOBJECT_H \
+ 	-DHB_GOBJECT_H_IN \
++	-DHB_EXTERN= \
+ 	$(NULL)
+ HarfBuzz_0_0_gir_LIBS = \
+ 	libharfbuzz.la \
+ 	libharfbuzz-gobject.la \
+ 	$(NULL)
+ HarfBuzz_0_0_gir_FILES = \
+ 	$(HBHEADERS) \
+ 	$(HBNODISTHEADERS) \
+diff --git a/gfx/harfbuzz/src/check-header-guards.sh b/gfx/harfbuzz/src/check-header-guards.sh
+--- a/gfx/harfbuzz/src/check-header-guards.sh
++++ b/gfx/harfbuzz/src/check-header-guards.sh
+@@ -4,22 +4,21 @@ LC_ALL=C
+ export LC_ALL
+ 
+ test -z "$srcdir" && srcdir=.
+ stat=0
+ 
+ test "x$HBHEADERS" = x && HBHEADERS=`cd "$srcdir"; find . -maxdepth 1 -name 'hb*.h'`
+ test "x$HBSOURCES" = x && HBSOURCES=`cd "$srcdir"; find . -maxdepth 1 -name 'hb-*.cc' -or -name 'hb-*.hh'`
+ 
+-
+ for x in $HBHEADERS $HBSOURCES; do
+ 	test -f "$srcdir/$x" && x="$srcdir/$x"
+-	echo "$x" | grep '[^h]$' -q && continue;
++	echo "$x" | grep -q '[^h]$' && continue;
+ 	xx=`echo "$x" | sed 's@.*/@@'`
+ 	tag=`echo "$xx" | tr 'a-z.-' 'A-Z_'`
+-	lines=`grep "\<$tag\>" "$x" | wc -l | sed 's/[ 	]*//g'`
++	lines=`grep -w "$tag" "$x" | wc -l | sed 's/[ 	]*//g'`
+ 	if test "x$lines" != x3; then
+ 		echo "Ouch, header file $x does not have correct preprocessor guards"
+ 		stat=1
+ 	fi
+ done
+ 
+ exit $stat
+diff --git a/gfx/harfbuzz/src/gen-indic-table.py b/gfx/harfbuzz/src/gen-indic-table.py
+--- a/gfx/harfbuzz/src/gen-indic-table.py
++++ b/gfx/harfbuzz/src/gen-indic-table.py
+@@ -86,16 +86,17 @@ short = [{
+ 	"Bindu":		'Bi',
+ 	"Cantillation_Mark":	'Ca',
+ 	"Joiner":		'ZWJ',
+ 	"Non_Joiner":		'ZWNJ',
+ 	"Number":		'Nd',
+ 	"Visarga":		'Vs',
+ 	"Vowel":		'Vo',
+ 	"Vowel_Dependent":	'M',
++	"Consonant_Prefixed":	'CPrf',
+ 	"Other":		'x',
+ },{
+ 	"Not_Applicable":	'x',
+ }]
+ all_shorts = [{},{}]
+ 
+ # Add some of the values, to make them more readable, and to avoid duplicates
+ 
+diff --git a/gfx/harfbuzz/src/hb-atomic-private.hh b/gfx/harfbuzz/src/hb-atomic-private.hh
+--- a/gfx/harfbuzz/src/hb-atomic-private.hh
++++ b/gfx/harfbuzz/src/hb-atomic-private.hh
+@@ -114,16 +114,41 @@ typedef int hb_atomic_int_impl_t;
+ typedef unsigned int hb_atomic_int_impl_t;
+ #define HB_ATOMIC_INT_IMPL_INIT(V) (V)
+ #define hb_atomic_int_impl_add(AI, V)		( ({__machine_rw_barrier ();}), atomic_add_int_nv (&(AI), (V)) - (V))
+ 
+ #define hb_atomic_ptr_impl_get(P)		( ({__machine_rw_barrier ();}), (void *) *(P))
+ #define hb_atomic_ptr_impl_cmpexch(P,O,N)	( ({__machine_rw_barrier ();}), atomic_cas_ptr ((void **) (P), (void *) (O), (void *) (N)) == (void *) (O) ? true : false)
+ 
+ 
++#elif !defined(HB_NO_MT) && defined(_AIX) && defined(__IBMCPP__)
++
++#include <builtins.h>
++
++
++static inline int hb_fetch_and_add(volatile int* AI, unsigned int V) {
++  __lwsync();
++  int result = __fetch_and_add(AI, V);
++  __isync();
++  return result;
++}
++static inline int hb_compare_and_swaplp(volatile long* P, long O, long N) {
++  __sync();
++  int result = __compare_and_swaplp (P, &O, N);
++  __sync();
++  return result;
++}
++
++typedef int hb_atomic_int_impl_t;
++#define HB_ATOMIC_INT_IMPL_INIT(V) (V)
++#define hb_atomic_int_impl_add(AI, V)           hb_fetch_and_add (&(AI), (V))
++
++#define hb_atomic_ptr_impl_get(P)               (__sync(), (void *) *(P))
++#define hb_atomic_ptr_impl_cmpexch(P,O,N)       hb_compare_and_swaplp ((long*)(P), (long)(O), (long)(N))
++
+ #elif !defined(HB_NO_MT)
+ 
+ #define HB_ATOMIC_INT_NIL 1 /* Warn that fallback implementation is in use. */
+ 
+ typedef volatile int hb_atomic_int_impl_t;
+ #define HB_ATOMIC_INT_IMPL_INIT(V) (V)
+ #define hb_atomic_int_impl_add(AI, V)		(((AI) += (V)) - (V))
+ 
+diff --git a/gfx/harfbuzz/src/hb-blob.h b/gfx/harfbuzz/src/hb-blob.h
+--- a/gfx/harfbuzz/src/hb-blob.h
++++ b/gfx/harfbuzz/src/hb-blob.h
+@@ -59,68 +59,68 @@ typedef enum {
+   HB_MEMORY_MODE_DUPLICATE,
+   HB_MEMORY_MODE_READONLY,
+   HB_MEMORY_MODE_WRITABLE,
+   HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE
+ } hb_memory_mode_t;
+ 
+ typedef struct hb_blob_t hb_blob_t;
+ 
+-hb_blob_t *
++HB_EXTERN hb_blob_t *
+ hb_blob_create (const char        *data,
+ 		unsigned int       length,
+ 		hb_memory_mode_t   mode,
+ 		void              *user_data,
+ 		hb_destroy_func_t  destroy);
+ 
+ /* Always creates with MEMORY_MODE_READONLY.
+  * Even if the parent blob is writable, we don't
+  * want the user of the sub-blob to be able to
+  * modify the parent data as that data may be
+  * shared among multiple sub-blobs.
+  */
+-hb_blob_t *
++HB_EXTERN hb_blob_t *
+ hb_blob_create_sub_blob (hb_blob_t    *parent,
+ 			 unsigned int  offset,
+ 			 unsigned int  length);
+ 
+-hb_blob_t *
++HB_EXTERN hb_blob_t *
+ hb_blob_get_empty (void);
+ 
+-hb_blob_t *
++HB_EXTERN hb_blob_t *
+ hb_blob_reference (hb_blob_t *blob);
+ 
+-void
++HB_EXTERN void
+ hb_blob_destroy (hb_blob_t *blob);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_blob_set_user_data (hb_blob_t          *blob,
+ 		       hb_user_data_key_t *key,
+ 		       void *              data,
+ 		       hb_destroy_func_t   destroy,
+ 		       hb_bool_t           replace);
+ 
+ 
+-void *
++HB_EXTERN void *
+ hb_blob_get_user_data (hb_blob_t          *blob,
+ 		       hb_user_data_key_t *key);
+ 
+ 
+-void
++HB_EXTERN void
+ hb_blob_make_immutable (hb_blob_t *blob);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_blob_is_immutable (hb_blob_t *blob);
+ 
+ 
+-unsigned int
++HB_EXTERN unsigned int
+ hb_blob_get_length (hb_blob_t *blob);
+ 
+-const char *
++HB_EXTERN const char *
+ hb_blob_get_data (hb_blob_t *blob, unsigned int *length);
+ 
+-char *
++HB_EXTERN char *
+ hb_blob_get_data_writable (hb_blob_t *blob, unsigned int *length);
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_BLOB_H */
+diff --git a/gfx/harfbuzz/src/hb-buffer-private.hh b/gfx/harfbuzz/src/hb-buffer-private.hh
+--- a/gfx/harfbuzz/src/hb-buffer-private.hh
++++ b/gfx/harfbuzz/src/hb-buffer-private.hh
+@@ -119,16 +119,21 @@ struct hb_buffer_t {
+ 
+   /* Text before / after the main buffer contents.
+    * Always in Unicode, and ordered outward.
+    * Index 0 is for "pre-context", 1 for "post-context". */
+   static const unsigned int CONTEXT_LENGTH = 5;
+   hb_codepoint_t context[2][CONTEXT_LENGTH];
+   unsigned int context_len[2];
+ 
++  /* Debugging */
++  hb_buffer_message_func_t message_func;
++  void *message_data;
++  hb_destroy_func_t message_destroy;
++
+ 
+   /* Methods */
+ 
+   HB_INTERNAL void reset (void);
+   HB_INTERNAL void clear (void);
+ 
+   inline unsigned int backtrack_len (void) const
+   { return have_output? out_len : idx; }
+@@ -169,23 +174,22 @@ struct hb_buffer_t {
+   /* Copies glyph at idx to output and advance idx.
+    * If there's no output, just advance idx. */
+   inline void
+   next_glyph (void)
+   {
+     if (have_output)
+     {
+       if (unlikely (out_info != info || out_len != idx)) {
+-	if (unlikely (!make_room_for (1, 1)))
+-	  goto done;
++	if (unlikely (!make_room_for (1, 1))) return;
+ 	out_info[out_len] = info[idx];
+       }
+       out_len++;
+     }
+-  done:
++
+     idx++;
+   }
+ 
+   /* Advance idx without copying to output. */
+   inline void skip_glyph (void) { idx++; }
+ 
+   inline void reset_masks (hb_mask_t mask)
+   {
+@@ -229,16 +233,29 @@ struct hb_buffer_t {
+   HB_INTERNAL bool shift_forward (unsigned int count);
+ 
+   typedef long scratch_buffer_t;
+   HB_INTERNAL scratch_buffer_t *get_scratch_buffer (unsigned int *size);
+ 
+   inline void clear_context (unsigned int side) { context_len[side] = 0; }
+ 
+   HB_INTERNAL void sort (unsigned int start, unsigned int end, int(*compar)(const hb_glyph_info_t *, const hb_glyph_info_t *));
++
++  inline bool messaging (void) { return unlikely (message_func); }
++  inline bool message (hb_font_t *font, const char *fmt, ...) HB_PRINTF_FUNC(3, 4)
++  {
++    if (!messaging ())
++      return true;
++    va_list ap;
++    va_start (ap, fmt);
++    bool ret = message_impl (font, fmt, ap);
++    va_end (ap);
++    return ret;
++  }
++  HB_INTERNAL bool message_impl (hb_font_t *font, const char *fmt, va_list ap) HB_PRINTF_FUNC(3, 0);
+ };
+ 
+ 
+ #define HB_BUFFER_XALLOCATE_VAR(b, func, var, owner) \
+   b->func (offsetof (hb_glyph_info_t, var) - offsetof(hb_glyph_info_t, var1), \
+ 	   sizeof (b->info[0].var), owner)
+ #define HB_BUFFER_ALLOCATE_VAR(b, var) \
+ 	HB_BUFFER_XALLOCATE_VAR (b, allocate_var, var (), #var)
+diff --git a/gfx/harfbuzz/src/hb-buffer-serialize.cc b/gfx/harfbuzz/src/hb-buffer-serialize.cc
+--- a/gfx/harfbuzz/src/hb-buffer-serialize.cc
++++ b/gfx/harfbuzz/src/hb-buffer-serialize.cc
+@@ -31,55 +31,61 @@ static const char *serialize_formats[] =
+   "text",
+   "json",
+   NULL
+ };
+ 
+ /**
+  * hb_buffer_serialize_list_formats:
+  *
+- * 
++ * Returns a list of supported buffer serialization formats.
+  *
+  * Return value: (transfer none):
++ * A string array of buffer serialization formats. Should not be freed.
+  *
+- * Since: 0.9.2
++ * Since: 0.9.7
+  **/
+ const char **
+ hb_buffer_serialize_list_formats (void)
+ {
+   return serialize_formats;
+ }
+ 
+ /**
+  * hb_buffer_serialize_format_from_string:
+- * @str: 
+- * @len: 
++ * @str: (array length=len) (element-type uint8_t): a string to parse
++ * @len: length of @str, or -1 if string is %NULL terminated
+  *
+- * 
++ * Parses a string into an #hb_buffer_serialize_format_t. Does not check if
++ * @str is a valid buffer serialization format, use
++ * hb_buffer_serialize_list_formats() to get the list of supported formats.
+  *
+  * Return value: 
++ * The parsed #hb_buffer_serialize_format_t.
+  *
+- * Since: 0.9.2
++ * Since: 0.9.7
+  **/
+ hb_buffer_serialize_format_t
+ hb_buffer_serialize_format_from_string (const char *str, int len)
+ {
+   /* Upper-case it. */
+   return (hb_buffer_serialize_format_t) (hb_tag_from_string (str, len) & ~0x20202020u);
+ }
+ 
+ /**
+  * hb_buffer_serialize_format_to_string:
+- * @format: 
++ * @format: an #hb_buffer_serialize_format_t to convert.
+  *
+- * 
++ * Converts @format to the string corresponding it, or %NULL if it is not a valid
++ * #hb_buffer_serialize_format_t.
+  *
+- * Return value: 
++ * Return value: (transfer none):
++ * A %NULL terminated string corresponding to @format. Should not be freed.
+  *
+- * Since: 0.9.2
++ * Since: 0.9.7
+  **/
+ const char *
+ hb_buffer_serialize_format_to_string (hb_buffer_serialize_format_t format)
+ {
+   switch (format)
+   {
+     case HB_BUFFER_SERIALIZE_FORMAT_TEXT:	return serialize_formats[0];
+     case HB_BUFFER_SERIALIZE_FORMAT_JSON:	return serialize_formats[1];
+@@ -237,56 +243,86 @@ static unsigned int
+       *buf = '\0';
+     } else
+       return i - start;
+   }
+ 
+   return end - start;
+ }
+ 
+-/* Returns number of items, starting at start, that were serialized. */
+ /**
+  * hb_buffer_serialize_glyphs:
+- * @buffer: a buffer.
+- * @start: 
+- * @end: 
+- * @buf: (array length=buf_size):
+- * @buf_size: 
+- * @buf_consumed: (out):
+- * @font: 
+- * @format: 
+- * @flags: 
++ * @buffer: an #hb_buffer_t buffer.
++ * @start: the first item in @buffer to serialize.
++ * @end: the last item in @buffer to serialize.
++ * @buf: (out) (array length=buf_size) (element-type uint8_t): output string to
++ *       write serialized buffer into.
++ * @buf_size: the size of @buf.
++ * @buf_consumed: (out) (allow-none): if not %NULL, will be set to the number of byes written into @buf.
++ * @font: (allow-none): the #hb_font_t used to shape this buffer, needed to
++ *        read glyph names and extents. If %NULL, and empty font will be used.
++ * @format: the #hb_buffer_serialize_format_t to use for formatting the output.
++ * @flags: the #hb_buffer_serialize_flags_t that control what glyph properties
++ *         to serialize.
+  *
+- * 
++ * Serializes @buffer into a textual representation of its glyph content,
++ * useful for showing the contents of the buffer, for example during debugging.
++ * There are currently two supported serialization formats:
++ *
++ * ## text
++ * A human-readable, plain text format.
++ * The serialized glyphs will look something like:
++ *
++ * ```
++ * [uni0651=0@518,0+0|uni0628=0+1897]
++ * ```
++ * - The serialized glyphs are delimited with `[` and `]`.
++ * - Glyphs are separated with `|`
++ * - Each glyph starts with glyph name, or glyph index if
++ *   #HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES flag is set. Then,
++ *   - If #HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS is not set, `=` then #hb_glyph_info_t.cluster.
++ *   - If #HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS is not set, the #hb_glyph_position_t in the format:
++ *     - If both #hb_glyph_position_t.x_offset and #hb_glyph_position_t.y_offset are not 0, `@x_offset,y_offset`. Then,
++ *     - `+x_advance`, then `,y_advance` if #hb_glyph_position_t.y_advance is not 0. Then,
++ *   - If #HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS is set, the
++ *     #hb_glyph_extents_t in the format
++ *     `&lt;x_bearing,y_bearing,width,height&gt;`
++ *
++ * ## json
++ * TODO.
+  *
+  * Return value: 
++ * The number of serialized items.
+  *
+- * Since: 0.9.2
++ * Since: 0.9.7
+  **/
+ unsigned int
+ hb_buffer_serialize_glyphs (hb_buffer_t *buffer,
+ 			    unsigned int start,
+ 			    unsigned int end,
+ 			    char *buf,
+ 			    unsigned int buf_size,
+-			    unsigned int *buf_consumed, /* May be NULL */
+-			    hb_font_t *font, /* May be NULL */
++			    unsigned int *buf_consumed,
++			    hb_font_t *font,
+ 			    hb_buffer_serialize_format_t format,
+ 			    hb_buffer_serialize_flags_t flags)
+ {
+   assert (start <= end && end <= buffer->len);
+ 
+   unsigned int sconsumed;
+   if (!buf_consumed)
+     buf_consumed = &sconsumed;
+   *buf_consumed = 0;
+ 
+   assert ((!buffer->len && buffer->content_type == HB_BUFFER_CONTENT_TYPE_INVALID) ||
+ 	  buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS);
+ 
++  if (!buffer->have_positions)
++    flags |= HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS;
++
+   if (unlikely (start == end))
+     return 0;
+ 
+   if (!font)
+     font = hb_font_get_empty ();
+ 
+   switch (format)
+   {
+@@ -350,28 +386,28 @@ parse_int (const char *pp, const char *e
+   return true;
+ }
+ 
+ #include "hb-buffer-deserialize-json.hh"
+ #include "hb-buffer-deserialize-text.hh"
+ 
+ /**
+  * hb_buffer_deserialize_glyphs:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t buffer.
+  * @buf: (array length=buf_len):
+  * @buf_len: 
+  * @end_ptr: (out):
+  * @font: 
+  * @format: 
+  *
+  * 
+  *
+  * Return value: 
+  *
+- * Since: 0.9.2
++ * Since: 0.9.7
+  **/
+ hb_bool_t
+ hb_buffer_deserialize_glyphs (hb_buffer_t *buffer,
+ 			      const char *buf,
+ 			      int buf_len, /* -1 means nul-terminated */
+ 			      const char **end_ptr, /* May be NULL */
+ 			      hb_font_t *font, /* May be NULL */
+ 			      hb_buffer_serialize_format_t format)
+diff --git a/gfx/harfbuzz/src/hb-buffer.cc b/gfx/harfbuzz/src/hb-buffer.cc
+--- a/gfx/harfbuzz/src/hb-buffer.cc
++++ b/gfx/harfbuzz/src/hb-buffer.cc
+@@ -30,33 +30,59 @@
+ #include "hb-buffer-private.hh"
+ #include "hb-utf-private.hh"
+ 
+ 
+ #ifndef HB_DEBUG_BUFFER
+ #define HB_DEBUG_BUFFER (HB_DEBUG+0)
+ #endif
+ 
++/**
++ * SECTION: hb-buffer
++ * @title: Buffers
++ * @short_description: Input and output buffers
++ * @include: hb.h
++ *
++ * Buffers serve dual role in HarfBuzz; they hold the input characters that are
++ * passed hb_shape(), and after shaping they hold the output glyphs.
++ **/
+ 
+ /**
++ * hb_segment_properties_equal:
++ * @a: first #hb_segment_properties_t to compare.
++ * @b: second #hb_segment_properties_t to compare.
++ *
++ * Checks the equality of two #hb_segment_properties_t's.
++ *
++ * Return value: (transfer full):
++ * %true if all properties of @a equal those of @b, false otherwise.
++ *
+  * Since: 0.9.7
+  **/
+ hb_bool_t
+ hb_segment_properties_equal (const hb_segment_properties_t *a,
+ 			     const hb_segment_properties_t *b)
+ {
+   return a->direction == b->direction &&
+ 	 a->script    == b->script    &&
+ 	 a->language  == b->language  &&
+ 	 a->reserved1 == b->reserved1 &&
+ 	 a->reserved2 == b->reserved2;
+ 
+ }
+ 
+ /**
++ * hb_segment_properties_hash:
++ * @p: #hb_segment_properties_t to hash.
++ *
++ * Creates a hash representing @p.
++ *
++ * Return value:
++ * A hash of @p.
++ *
+  * Since: 0.9.7
+  **/
+ unsigned int
+ hb_segment_properties_hash (const hb_segment_properties_t *p)
+ {
+   return (unsigned int) p->direction ^
+ 	 (unsigned int) p->script ^
+ 	 (intptr_t) (p->language);
+@@ -319,75 +345,62 @@ hb_buffer_t::swap_buffers (void)
+ }
+ 
+ 
+ void
+ hb_buffer_t::replace_glyphs (unsigned int num_in,
+ 			     unsigned int num_out,
+ 			     const uint32_t *glyph_data)
+ {
+-  if (unlikely (!make_room_for (num_in, num_out)))
+-    goto done;
+-  {
++  if (unlikely (!make_room_for (num_in, num_out))) return;
+ 
+   merge_clusters (idx, idx + num_in);
+ 
+   hb_glyph_info_t orig_info = info[idx];
+   hb_glyph_info_t *pinfo = &out_info[out_len];
+   for (unsigned int i = 0; i < num_out; i++)
+   {
+     *pinfo = orig_info;
+     pinfo->codepoint = glyph_data[i];
+     pinfo++;
+   }
+ 
++  idx  += num_in;
+   out_len += num_out;
+-  }
+-done:
+-  idx  += num_in;
+ }
+ 
+ void
+ hb_buffer_t::output_glyph (hb_codepoint_t glyph_index)
+ {
+-  if (unlikely (!make_room_for (0, 1)))
+-    goto done;
++  if (unlikely (!make_room_for (0, 1))) return;
+ 
+   out_info[out_len] = info[idx];
+   out_info[out_len].codepoint = glyph_index;
+ 
+   out_len++;
+-done:
+-  ;
+ }
+ 
+ void
+ hb_buffer_t::output_info (const hb_glyph_info_t &glyph_info)
+ {
+-  if (unlikely (!make_room_for (0, 1)))
+-    goto done;
++  if (unlikely (!make_room_for (0, 1))) return;
+ 
+   out_info[out_len] = glyph_info;
+ 
+   out_len++;
+-done:
+-  ;
+ }
+ 
+ void
+ hb_buffer_t::copy_glyph (void)
+ {
+-  if (unlikely (!make_room_for (0, 1)))
+-    goto done;
++  if (unlikely (!make_room_for (0, 1))) return;
+ 
+   out_info[out_len] = info[idx];
+ 
+   out_len++;
+-done:
+-  ;
+ }
+ 
+ bool
+ hb_buffer_t::move_to (unsigned int i)
+ {
+   if (!have_output)
+   {
+     assert (i <= len);
+@@ -395,17 +408,17 @@ hb_buffer_t::move_to (unsigned int i)
+     return true;
+   }
+ 
+   assert (i <= out_len + (len - idx));
+ 
+   if (out_len < i)
+   {
+     unsigned int count = i - out_len;
+-    if (unlikely (!make_room_for (count, count))) return false; // XXX verify bailout
++    if (unlikely (!make_room_for (count, count))) return false;
+ 
+     memmove (out_info + out_len, info + idx, count * sizeof (out_info[0]));
+     idx += count;
+     out_len += count;
+   }
+   else if (out_len > i)
+   {
+     /* Tricky part: rewinding... */
+@@ -422,25 +435,23 @@ hb_buffer_t::move_to (unsigned int i)
+ 
+   return true;
+ }
+ 
+ void
+ hb_buffer_t::replace_glyph (hb_codepoint_t glyph_index)
+ {
+   if (unlikely (out_info != info || out_len != idx)) {
+-    if (unlikely (!make_room_for (1, 1)))
+-      goto out;
++    if (unlikely (!make_room_for (1, 1))) return;
+     out_info[out_len] = info[idx];
+   }
+   out_info[out_len].codepoint = glyph_index;
+ 
++  idx++;
+   out_len++;
+-out:
+-  idx++;
+ }
+ 
+ 
+ void
+ hb_buffer_t::set_masks (hb_mask_t    value,
+ 			hb_mask_t    mask,
+ 			unsigned int cluster_start,
+ 			unsigned int cluster_end)
+@@ -716,19 +727,24 @@ void hb_buffer_t::deallocate_var_all (vo
+   memset (allocated_var_owner, 0, sizeof (allocated_var_owner));
+ }
+ 
+ /* Public API */
+ 
+ /**
+  * hb_buffer_create: (Xconstructor)
+  *
+- * 
++ * Creates a new #hb_buffer_t with all properties to defaults.
+  *
+- * Return value: (transfer full)
++ * Return value: (transfer full):
++ * A newly allocated #hb_buffer_t with a reference count of 1. The initial
++ * reference count should be released with hb_buffer_destroy() when you are done
++ * using the #hb_buffer_t. This function never returns %NULL. If memory cannot
++ * be allocated, a special #hb_buffer_t object will be returned on which
++ * hb_buffer_allocation_successful() returns %false.
+  *
+  * Since: 0.9.2
+  **/
+ hb_buffer_t *
+ hb_buffer_create (void)
+ {
+   hb_buffer_t *buffer;
+ 
+@@ -773,54 +789,60 @@ hb_buffer_get_empty (void)
+     /* Zero is good enough for everything else. */
+   };
+ 
+   return const_cast<hb_buffer_t *> (&_hb_buffer_nil);
+ }
+ 
+ /**
+  * hb_buffer_reference: (skip)
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+- * 
++ * Increases the reference count on @buffer by one. This prevents @buffer from
++ * being destroyed until a matching call to hb_buffer_destroy() is made.
+  *
+  * Return value: (transfer full):
++ * The referenced #hb_buffer_t.
+  *
+  * Since: 0.9.2
+  **/
+ hb_buffer_t *
+ hb_buffer_reference (hb_buffer_t *buffer)
+ {
+   return hb_object_reference (buffer);
+ }
+ 
+ /**
+  * hb_buffer_destroy: (skip)
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+- * 
++ * Deallocate the @buffer.
++ * Decreases the reference count on @buffer by one. If the result is zero, then
++ * @buffer and all associated resources are freed. See hb_buffer_reference().
+  *
+  * Since: 0.9.2
+  **/
+ void
+ hb_buffer_destroy (hb_buffer_t *buffer)
+ {
+   if (!hb_object_destroy (buffer)) return;
+ 
+   hb_unicode_funcs_destroy (buffer->unicode);
+ 
+   free (buffer->info);
+   free (buffer->pos);
++  if (buffer->message_destroy)
++    buffer->message_destroy (buffer->message_data);
+ 
+   free (buffer);
+ }
+ 
+ /**
+  * hb_buffer_set_user_data: (skip)
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  * @key: 
+  * @data: 
+  * @destroy: 
+  * @replace: 
+  *
+  * 
+  *
+  * Return value: 
+@@ -834,17 +856,17 @@ hb_buffer_set_user_data (hb_buffer_t    
+ 			 hb_destroy_func_t   destroy,
+ 			 hb_bool_t           replace)
+ {
+   return hb_object_set_user_data (buffer, key, data, destroy, replace);
+ }
+ 
+ /**
+  * hb_buffer_get_user_data: (skip)
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  * @key: 
+  *
+  * 
+  *
+  * Return value: 
+  *
+  * Since: 0.9.2
+  **/
+@@ -853,50 +875,52 @@ hb_buffer_get_user_data (hb_buffer_t    
+ 			 hb_user_data_key_t *key)
+ {
+   return hb_object_get_user_data (buffer, key);
+ }
+ 
+ 
+ /**
+  * hb_buffer_set_content_type:
+- * @buffer: a buffer.
+- * @content_type: 
++ * @buffer: an #hb_buffer_t.
++ * @content_type: the type of buffer contents to set
+  *
+- * 
++ * Sets the type of @buffer contents, buffers are either empty, contain
++ * characters (before shaping) or glyphs (the result of shaping).
+  *
+  * Since: 0.9.5
+  **/
+ void
+ hb_buffer_set_content_type (hb_buffer_t              *buffer,
+ 			    hb_buffer_content_type_t  content_type)
+ {
+   buffer->content_type = content_type;
+ }
+ 
+ /**
+  * hb_buffer_get_content_type:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+- * 
++ * see hb_buffer_set_content_type().
+  *
+- * Return value: 
++ * Return value:
++ * The type of @buffer contents.
+  *
+  * Since: 0.9.5
+  **/
+ hb_buffer_content_type_t
+ hb_buffer_get_content_type (hb_buffer_t *buffer)
+ {
+   return buffer->content_type;
+ }
+ 
+ 
+ /**
+  * hb_buffer_set_unicode_funcs:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  * @unicode_funcs: 
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+ void
+ hb_buffer_set_unicode_funcs (hb_buffer_t        *buffer,
+@@ -911,210 +935,238 @@ hb_buffer_set_unicode_funcs (hb_buffer_t
+ 
+   hb_unicode_funcs_reference (unicode_funcs);
+   hb_unicode_funcs_destroy (buffer->unicode);
+   buffer->unicode = unicode_funcs;
+ }
+ 
+ /**
+  * hb_buffer_get_unicode_funcs:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+  * 
+  *
+  * Return value: 
+  *
+  * Since: 0.9.2
+  **/
+ hb_unicode_funcs_t *
+ hb_buffer_get_unicode_funcs (hb_buffer_t        *buffer)
+ {
+   return buffer->unicode;
+ }
+ 
+ /**
+  * hb_buffer_set_direction:
+- * @buffer: a buffer.
+- * @direction: 
++ * @buffer: an #hb_buffer_t.
++ * @direction: the #hb_direction_t of the @buffer
+  *
+- * 
++ * Set the text flow direction of the buffer. No shaping can happen without
++ * setting @buffer direction, and it controls the visual direction for the
++ * output glyphs; for RTL direction the glyphs will be reversed. Many layout
++ * features depend on the proper setting of the direction, for example,
++ * reversing RTL text before shaping, then shaping with LTR direction is not
++ * the same as keeping the text in logical order and shaping with RTL
++ * direction.
+  *
+  * Since: 0.9.2
+  **/
+ void
+ hb_buffer_set_direction (hb_buffer_t    *buffer,
+ 			 hb_direction_t  direction)
+ 
+ {
+   if (unlikely (hb_object_is_inert (buffer)))
+     return;
+ 
+   buffer->props.direction = direction;
+ }
+ 
+ /**
+  * hb_buffer_get_direction:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+- * 
++ * See hb_buffer_set_direction()
+  *
+- * Return value: 
++ * Return value:
++ * The direction of the @buffer.
+  *
+  * Since: 0.9.2
+  **/
+ hb_direction_t
+ hb_buffer_get_direction (hb_buffer_t    *buffer)
+ {
+   return buffer->props.direction;
+ }
+ 
+ /**
+  * hb_buffer_set_script:
+- * @buffer: a buffer.
+- * @script: 
++ * @buffer: an #hb_buffer_t.
++ * @script: an #hb_script_t to set.
+  *
+- * 
++ * Sets the script of @buffer to @script.
++ *
++ * Script is crucial for choosing the proper shaping behaviour for scripts that
++ * require it (e.g. Arabic) and the which OpenType features defined in the font
++ * to be applied.
++ *
++ * You can pass one of the predefined #hb_script_t values, or use
++ * hb_script_from_string() or hb_script_from_iso15924_tag() to get the
++ * corresponding script from an ISO 15924 script tag.
+  *
+  * Since: 0.9.2
+  **/
+ void
+ hb_buffer_set_script (hb_buffer_t *buffer,
+ 		      hb_script_t  script)
+ {
+   if (unlikely (hb_object_is_inert (buffer)))
+     return;
+ 
+   buffer->props.script = script;
+ }
+ 
+ /**
+  * hb_buffer_get_script:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+- * 
++ * See hb_buffer_set_script().
+  *
+- * Return value: 
++ * Return value:
++ * The #hb_script_t of the @buffer.
+  *
+  * Since: 0.9.2
+  **/
+ hb_script_t
+ hb_buffer_get_script (hb_buffer_t *buffer)
+ {
+   return buffer->props.script;
+ }
+ 
+ /**
+  * hb_buffer_set_language:
+- * @buffer: a buffer.
+- * @language: 
++ * @buffer: an #hb_buffer_t.
++ * @language: an hb_language_t to set.
+  *
+- * 
++ * Sets the language of @buffer to @language.
++ *
++ * Languages are crucial for selecting which OpenType feature to apply to the
++ * buffer which can result in applying language-specific behaviour. Languages
++ * are orthogonal to the scripts, and though they are related, they are
++ * different concepts and should not be confused with each other.
++ *
++ * Use hb_language_from_string() to convert from ISO 639 language codes to
++ * #hb_language_t.
+  *
+  * Since: 0.9.2
+  **/
+ void
+ hb_buffer_set_language (hb_buffer_t   *buffer,
+ 			hb_language_t  language)
+ {
+   if (unlikely (hb_object_is_inert (buffer)))
+     return;
+ 
+   buffer->props.language = language;
+ }
+ 
+ /**
+  * hb_buffer_get_language:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+- * 
++ * See hb_buffer_set_language().
+  *
+  * Return value: (transfer none):
++ * The #hb_language_t of the buffer. Must not be freed by the caller.
+  *
+  * Since: 0.9.2
+  **/
+ hb_language_t
+ hb_buffer_get_language (hb_buffer_t *buffer)
+ {
+   return buffer->props.language;
+ }
+ 
+ /**
+  * hb_buffer_set_segment_properties:
+- * @buffer: a buffer.
+- * @props: 
++ * @buffer: an #hb_buffer_t.
++ * @props: an #hb_segment_properties_t to use.
+  *
+- * 
++ * Sets the segment properties of the buffer, a shortcut for calling
++ * hb_buffer_set_direction(), hb_buffer_set_script() and
++ * hb_buffer_set_language() individually.
+  *
+  * Since: 0.9.7
+  **/
+ void
+ hb_buffer_set_segment_properties (hb_buffer_t *buffer,
+ 				  const hb_segment_properties_t *props)
+ {
+   if (unlikely (hb_object_is_inert (buffer)))
+     return;
+ 
+   buffer->props = *props;
+ }
+ 
+ /**
+  * hb_buffer_get_segment_properties:
+- * @buffer: a buffer.
+- * @props: (out):
++ * @buffer: an #hb_buffer_t.
++ * @props: (out): the output #hb_segment_properties_t.
+  *
+- * 
++ * Sets @props to the #hb_segment_properties_t of @buffer.
+  *
+  * Since: 0.9.7
+  **/
+ void
+ hb_buffer_get_segment_properties (hb_buffer_t *buffer,
+ 				  hb_segment_properties_t *props)
+ {
+   *props = buffer->props;
+ }
+ 
+ 
+ /**
+  * hb_buffer_set_flags:
+- * @buffer: a buffer.
+- * @flags: 
++ * @buffer: an #hb_buffer_t.
++ * @flags: the buffer flags to set.
+  *
+- * 
++ * Sets @buffer flags to @flags. See #hb_buffer_flags_t.
+  *
+  * Since: 0.9.7
+  **/
+ void
+ hb_buffer_set_flags (hb_buffer_t       *buffer,
+ 		     hb_buffer_flags_t  flags)
+ {
+   if (unlikely (hb_object_is_inert (buffer)))
+     return;
+ 
+   buffer->flags = flags;
+ }
+ 
+ /**
+  * hb_buffer_get_flags:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+- * 
++ * See hb_buffer_set_flags().
+  *
+  * Return value: 
++ * The @buffer flags.
+  *
+  * Since: 0.9.7
+  **/
+ hb_buffer_flags_t
+ hb_buffer_get_flags (hb_buffer_t *buffer)
+ {
+   return buffer->flags;
+ }
+ 
+ /**
+  * hb_buffer_set_cluster_level:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  * @cluster_level: 
+  *
+  * 
+  *
+  * Since: 0.9.42
+  **/
+ void
+ hb_buffer_set_cluster_level (hb_buffer_t       *buffer,
+@@ -1123,155 +1175,172 @@ hb_buffer_set_cluster_level (hb_buffer_t
+   if (unlikely (hb_object_is_inert (buffer)))
+     return;
+ 
+   buffer->cluster_level = cluster_level;
+ }
+ 
+ /**
+  * hb_buffer_get_cluster_level:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+  * 
+  *
+  * Return value: 
+  *
+  * Since: 0.9.42
+  **/
+ hb_buffer_cluster_level_t
+ hb_buffer_get_cluster_level (hb_buffer_t *buffer)
+ {
+   return buffer->cluster_level;
+ }
+ 
+ 
+ /**
+  * hb_buffer_set_replacement_codepoint:
+- * @buffer: a buffer.
+- * @replacement: 
++ * @buffer: an #hb_buffer_t.
++ * @replacement: the replacement #hb_codepoint_t
+  *
+- * 
++ * Sets the #hb_codepoint_t that replaces invalid entries for a given encoding
++ * when adding text to @buffer.
++ *
++ * Default is %HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT.
+  *
+  * Since: 0.9.31
+  **/
+ void
+ hb_buffer_set_replacement_codepoint (hb_buffer_t    *buffer,
+ 				     hb_codepoint_t  replacement)
+ {
+   if (unlikely (hb_object_is_inert (buffer)))
+     return;
+ 
+   buffer->replacement = replacement;
+ }
+ 
+ /**
+  * hb_buffer_get_replacement_codepoint:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+- * 
++ * See hb_buffer_set_replacement_codepoint().
+  *
+  * Return value: 
++ * The @buffer replacement #hb_codepoint_t.
+  *
+  * Since: 0.9.31
+  **/
+ hb_codepoint_t
+ hb_buffer_get_replacement_codepoint (hb_buffer_t    *buffer)
+ {
+   return buffer->replacement;
+ }
+ 
+ 
+ /**
+  * hb_buffer_reset:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+- * 
++ * Resets the buffer to its initial status, as if it was just newly created
++ * with hb_buffer_create().
+  *
+  * Since: 0.9.2
+  **/
+ void
+ hb_buffer_reset (hb_buffer_t *buffer)
+ {
+   buffer->reset ();
+ }
+ 
+ /**
+  * hb_buffer_clear_contents:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+- * 
++ * Similar to hb_buffer_reset(), but does not clear the Unicode functions and
++ * the replacement code point.
+  *
+  * Since: 0.9.11
+  **/
+ void
+ hb_buffer_clear_contents (hb_buffer_t *buffer)
+ {
+   buffer->clear ();
+ }
+ 
+ /**
+  * hb_buffer_pre_allocate:
+- * @buffer: a buffer.
+- * @size: 
++ * @buffer: an #hb_buffer_t.
++ * @size: number of items to pre allocate.
+  *
+- * 
++ * Pre allocates memory for @buffer to fit at least @size number of items.
+  *
+- * Return value: 
++ * Return value:
++ * %true if @buffer memory allocation succeeded, %false otherwise.
+  *
+  * Since: 0.9.2
+  **/
+ hb_bool_t
+ hb_buffer_pre_allocate (hb_buffer_t *buffer, unsigned int size)
+ {
+   return buffer->ensure (size);
+ }
+ 
+ /**
+  * hb_buffer_allocation_successful:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+- * 
++ * Check if allocating memory for the buffer succeeded.
+  *
+- * Return value: 
++ * Return value:
++ * %true if @buffer memory allocation succeeded, %false otherwise.
+  *
+  * Since: 0.9.2
+  **/
+ hb_bool_t
+ hb_buffer_allocation_successful (hb_buffer_t  *buffer)
+ {
+   return !buffer->in_error;
+ }
+ 
+ /**
+  * hb_buffer_add:
+- * @buffer: a buffer.
+- * @codepoint: 
+- * @cluster: 
++ * @buffer: an #hb_buffer_t.
++ * @codepoint: a Unicode code point.
++ * @cluster: the cluster value of @codepoint.
+  *
+- * 
++ * Appends a character with the Unicode value of @codepoint to @buffer, and
++ * gives it the initial cluster value of @cluster. Clusters can be any thing
++ * the client wants, they are usually used to refer to the index of the
++ * character in the input text stream and are output in
++ * #hb_glyph_info_t.cluster field.
++ *
++ * This function does not check the validity of @codepoint, it is up to the
++ * caller to ensure it is a valid Unicode code point.
+  *
+  * Since: 0.9.7
+  **/
+ void
+ hb_buffer_add (hb_buffer_t    *buffer,
+ 	       hb_codepoint_t  codepoint,
+ 	       unsigned int    cluster)
+ {
+   buffer->add (codepoint, cluster);
+   buffer->clear_context (1);
+ }
+ 
+ /**
+  * hb_buffer_set_length:
+- * @buffer: a buffer.
+- * @length: 
++ * @buffer: an #hb_buffer_t.
++ * @length: the new length of @buffer.
+  *
+- * 
++ * Similar to hb_buffer_pre_allocate(), but clears any new items added at the
++ * end.
+  *
+  * Return value: 
++ * %true if @buffer memory allocation succeeded, %false otherwise.
+  *
+  * Since: 0.9.2
+  **/
+ hb_bool_t
+ hb_buffer_set_length (hb_buffer_t  *buffer,
+ 		      unsigned int  length)
+ {
+   if (unlikely (hb_object_is_inert (buffer)))
+@@ -1296,61 +1365,67 @@ hb_buffer_set_length (hb_buffer_t  *buff
+   }
+   buffer->clear_context (1);
+ 
+   return true;
+ }
+ 
+ /**
+  * hb_buffer_get_length:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+  * Returns the number of items in the buffer.
+  *
+- * Return value: buffer length.
++ * Return value:
++ * The @buffer length.
++ * The value valid as long as buffer has not been modified.
+  *
+  * Since: 0.9.2
+  **/
+ unsigned int
+ hb_buffer_get_length (hb_buffer_t *buffer)
+ {
+   return buffer->len;
+ }
+ 
+ /**
+  * hb_buffer_get_glyph_infos:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  * @length: (out): output array length.
+  *
+- * Returns buffer glyph information array.  Returned pointer
+- * is valid as long as buffer contents are not modified.
++ * Returns @buffer glyph information array.  Returned pointer
++ * is valid as long as @buffer contents are not modified.
+  *
+- * Return value: (transfer none) (array length=length): buffer glyph information array.
++ * Return value: (transfer none) (array length=length):
++ * The @buffer glyph information array.
++ * The value valid as long as buffer has not been modified.
+  *
+  * Since: 0.9.2
+  **/
+ hb_glyph_info_t *
+ hb_buffer_get_glyph_infos (hb_buffer_t  *buffer,
+                            unsigned int *length)
+ {
+   if (length)
+     *length = buffer->len;
+ 
+   return (hb_glyph_info_t *) buffer->info;
+ }
+ 
+ /**
+  * hb_buffer_get_glyph_positions:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  * @length: (out): output length.
+  *
+- * Returns buffer glyph position array.  Returned pointer
+- * is valid as long as buffer contents are not modified.
++ * Returns @buffer glyph position array.  Returned pointer
++ * is valid as long as @buffer contents are not modified.
+  *
+- * Return value: (transfer none) (array length=length): buffer glyph position array.
++ * Return value: (transfer none) (array length=length):
++ * The @buffer glyph position array.
++ * The value valid as long as buffer has not been modified.
+  *
+  * Since: 0.9.2
+  **/
+ hb_glyph_position_t *
+ hb_buffer_get_glyph_positions (hb_buffer_t  *buffer,
+                                unsigned int *length)
+ {
+   if (!buffer->have_positions)
+@@ -1359,64 +1434,64 @@ hb_buffer_get_glyph_positions (hb_buffer
+   if (length)
+     *length = buffer->len;
+ 
+   return (hb_glyph_position_t *) buffer->pos;
+ }
+ 
+ /**
+  * hb_buffer_reverse:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+  * Reverses buffer contents.
+  *
+  * Since: 0.9.2
+  **/
+ void
+ hb_buffer_reverse (hb_buffer_t *buffer)
+ {
+   buffer->reverse ();
+ }
+ 
+ /**
+  * hb_buffer_reverse_range:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  * @start: start index.
+  * @end: end index.
+  *
+  * Reverses buffer contents between start to end.
+  *
+  * Since: 0.9.41
+  **/
+ void
+ hb_buffer_reverse_range (hb_buffer_t *buffer,
+ 			 unsigned int start, unsigned int end)
+ {
+   buffer->reverse_range (start, end);
+ }
+ 
+ /**
+  * hb_buffer_reverse_clusters:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+  * Reverses buffer clusters.  That is, the buffer contents are
+  * reversed, then each cluster (consecutive items having the
+  * same cluster number) are reversed again.
+  *
+  * Since: 0.9.2
+  **/
+ void
+ hb_buffer_reverse_clusters (hb_buffer_t *buffer)
+ {
+   buffer->reverse_clusters ();
+ }
+ 
+ /**
+  * hb_buffer_guess_segment_properties:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+  * Sets unset buffer segment properties based on buffer Unicode
+  * contents.  If buffer is not empty, it must have content type
+  * %HB_BUFFER_CONTENT_TYPE_UNICODE.
+  *
+  * If buffer script is not set (ie. is %HB_SCRIPT_INVALID), it
+  * will be set to the Unicode script of the first character in
+  * the buffer that has a script other than %HB_SCRIPT_COMMON,
+@@ -1505,111 +1580,141 @@ hb_buffer_add_utf (hb_buffer_t  *buffer,
+     buffer->context[1][buffer->context_len[1]++] = u;
+   }
+ 
+   buffer->content_type = HB_BUFFER_CONTENT_TYPE_UNICODE;
+ }
+ 
+ /**
+  * hb_buffer_add_utf8:
+- * @buffer: a buffer.
+- * @text: (array length=text_length) (element-type uint8_t):
+- * @text_length: 
+- * @item_offset: 
+- * @item_length: 
++ * @buffer: an #hb_buffer_t.
++ * @text: (array length=text_length) (element-type uint8_t): an array of UTF-8
++ *               characters to append.
++ * @text_length: the length of the @text, or -1 if it is %NULL terminated.
++ * @item_offset: the offset of the first character to add to the @buffer.
++ * @item_length: the number of characters to add to the @buffer, or -1 for the
++ *               end of @text (assuming it is %NULL terminated).
+  *
+- * 
++ * See hb_buffer_add_codepoints().
++ *
++ * Replaces invalid UTF-8 characters with the @buffer replacement code point,
++ * see hb_buffer_set_replacement_codepoint().
+  *
+  * Since: 0.9.2
+  **/
+ void
+ hb_buffer_add_utf8 (hb_buffer_t  *buffer,
+ 		    const char   *text,
+ 		    int           text_length,
+ 		    unsigned int  item_offset,
+ 		    int           item_length)
+ {
+   hb_buffer_add_utf<hb_utf8_t> (buffer, (const uint8_t *) text, text_length, item_offset, item_length);
+ }
+ 
+ /**
+  * hb_buffer_add_utf16:
+- * @buffer: a buffer.
+- * @text: (array length=text_length):
+- * @text_length: 
+- * @item_offset: 
+- * @item_length: 
++ * @buffer: an #hb_buffer_t.
++ * @text: (array length=text_length): an array of UTF-16 characters to append.
++ * @text_length: the length of the @text, or -1 if it is %NULL terminated.
++ * @item_offset: the offset of the first character to add to the @buffer.
++ * @item_length: the number of characters to add to the @buffer, or -1 for the
++ *               end of @text (assuming it is %NULL terminated).
+  *
+- * 
++ * See hb_buffer_add_codepoints().
++ *
++ * Replaces invalid UTF-16 characters with the @buffer replacement code point,
++ * see hb_buffer_set_replacement_codepoint().
+  *
+  * Since: 0.9.2
+  **/
+ void
+ hb_buffer_add_utf16 (hb_buffer_t    *buffer,
+ 		     const uint16_t *text,
+ 		     int             text_length,
+ 		     unsigned int    item_offset,
+ 		     int             item_length)
+ {
+   hb_buffer_add_utf<hb_utf16_t> (buffer, text, text_length, item_offset, item_length);
+ }
+ 
+ /**
+  * hb_buffer_add_utf32:
+- * @buffer: a buffer.
+- * @text: (array length=text_length):
+- * @text_length: 
+- * @item_offset: 
+- * @item_length: 
++ * @buffer: an #hb_buffer_t.
++ * @text: (array length=text_length): an array of UTF-32 characters to append.
++ * @text_length: the length of the @text, or -1 if it is %NULL terminated.
++ * @item_offset: the offset of the first character to add to the @buffer.
++ * @item_length: the number of characters to add to the @buffer, or -1 for the
++ *               end of @text (assuming it is %NULL terminated).
+  *
+- * 
++ * See hb_buffer_add_codepoints().
++ *
++ * Replaces invalid UTF-32 characters with the @buffer replacement code point,
++ * see hb_buffer_set_replacement_codepoint().
+  *
+  * Since: 0.9.2
+  **/
+ void
+ hb_buffer_add_utf32 (hb_buffer_t    *buffer,
+ 		     const uint32_t *text,
+ 		     int             text_length,
+ 		     unsigned int    item_offset,
+ 		     int             item_length)
+ {
+   hb_buffer_add_utf<hb_utf32_t<> > (buffer, text, text_length, item_offset, item_length);
+ }
+ 
+ /**
+  * hb_buffer_add_latin1:
+- * @buffer: a buffer.
+- * @text: (array length=text_length) (element-type uint8_t):
+- * @text_length: 
+- * @item_offset: 
+- * @item_length: 
++ * @buffer: an #hb_buffer_t.
++ * @text: (array length=text_length) (element-type uint8_t): an array of UTF-8
++ *               characters to append.
++ * @text_length: the length of the @text, or -1 if it is %NULL terminated.
++ * @item_offset: the offset of the first character to add to the @buffer.
++ * @item_length: the number of characters to add to the @buffer, or -1 for the
++ *               end of @text (assuming it is %NULL terminated).
+  *
+- * 
++ * Similar to hb_buffer_add_codepoints(), but allows only access to first 256
++ * Unicode code points that can fit in 8-bit strings.
++ *
++ * <note>Has nothing to do with non-Unicode Latin-1 encoding.</note>
+  *
+  * Since: 0.9.39
+  **/
+ void
+ hb_buffer_add_latin1 (hb_buffer_t   *buffer,
+ 		      const uint8_t *text,
+ 		      int            text_length,
+ 		      unsigned int   item_offset,
+ 		      int            item_length)
+ {
+   hb_buffer_add_utf<hb_latin1_t> (buffer, text, text_length, item_offset, item_length);
+ }
+ 
+ /**
+  * hb_buffer_add_codepoints:
+- * @buffer: a buffer.
+- * @text: (array length=text_length):
+- * @text_length: 
+- * @item_offset: 
+- * @item_length: 
++ * @buffer: a #hb_buffer_t to append characters to.
++ * @text: (array length=text_length): an array of Unicode code points to append.
++ * @text_length: the length of the @text, or -1 if it is %NULL terminated.
++ * @item_offset: the offset of the first code point to add to the @buffer.
++ * @item_length: the number of code points to add to the @buffer, or -1 for the
++ *               end of @text (assuming it is %NULL terminated).
+  *
+- * 
++ * Appends characters from @text array to @buffer. The @item_offset is the
++ * position of the first character from @text that will be appended, and
++ * @item_length is the number of character. When shaping part of a larger text
++ * (e.g. a run of text from a paragraph), instead of passing just the substring
++ * corresponding to the run, it is preferable to pass the whole
++ * paragraph and specify the run start and length as @item_offset and
++ * @item_length, respectively, to give HarfBuzz the full context to be able,
++ * for example, to do cross-run Arabic shaping or properly handle combining
++ * marks at stat of run.
++ *
++ * This function does not check the validity of @text, it is up to the caller
++ * to ensure it contains a valid Unicode code points.
+  *
+  * Since: 0.9.31
+  **/
+ void
+ hb_buffer_add_codepoints (hb_buffer_t          *buffer,
+ 			  const hb_codepoint_t *text,
+ 			  int                   text_length,
+ 			  unsigned int          item_offset,
+@@ -1671,19 +1776,22 @@ normalize_glyphs_cluster (hb_buffer_t *b
+       pos[i].y_offset -= total_y_advance;
+     }
+     hb_stable_sort (buffer->info + start + 1, end - start - 1, compare_info_codepoint, buffer->pos + start + 1);
+   }
+ }
+ 
+ /**
+  * hb_buffer_normalize_glyphs:
+- * @buffer: a buffer.
++ * @buffer: an #hb_buffer_t.
+  *
+- * 
++ * Reorders a glyph buffer to have canonical in-cluster glyph order / position.
++ * The resulting clusters should behave identical to pre-reordering clusters.
++ *
++ * <note>This has nothing to do with Unicode normalization.</note>
+  *
+  * Since: 0.9.2
+  **/
+ void
+ hb_buffer_normalize_glyphs (hb_buffer_t *buffer)
+ {
+   assert (buffer->have_positions);
+   assert (buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS);
+@@ -1719,8 +1827,50 @@ hb_buffer_t::sort (unsigned int start, u
+     merge_clusters (j, i + 1);
+     {
+       hb_glyph_info_t t = info[i];
+       memmove (&info[j + 1], &info[j], (i - j) * sizeof (hb_glyph_info_t));
+       info[j] = t;
+     }
+   }
+ }
++
++/*
++ * Debugging.
++ */
++
++/**
++ * hb_buffer_set_message_func:
++ * @buffer: an #hb_buffer_t.
++ * @func: (closure user_data) (destroy destroy) (scope notified):
++ * @user_data:
++ * @destroy:
++ *
++ * 
++ *
++ * Since: 1.1.3
++ **/
++void
++hb_buffer_set_message_func (hb_buffer_t *buffer,
++			    hb_buffer_message_func_t func,
++			    void *user_data, hb_destroy_func_t destroy)
++{
++  if (buffer->message_destroy)
++    buffer->message_destroy (buffer->message_data);
++
++  if (func) {
++    buffer->message_func = func;
++    buffer->message_data = user_data;
++    buffer->message_destroy = destroy;
++  } else {
++    buffer->message_func = NULL;
++    buffer->message_data = NULL;
++    buffer->message_destroy = NULL;
++  }
++}
++
++bool
++hb_buffer_t::message_impl (hb_font_t *font, const char *fmt, va_list ap)
++{
++  char buf[100];
++  vsnprintf (buf, sizeof (buf),  fmt, ap);
++  return (bool) this->message_func (this, font, buf, this->message_data);
++}
+diff --git a/gfx/harfbuzz/src/hb-buffer.h b/gfx/harfbuzz/src/hb-buffer.h
+--- a/gfx/harfbuzz/src/hb-buffer.h
++++ b/gfx/harfbuzz/src/hb-buffer.h
+@@ -35,344 +35,438 @@
+ #define HB_BUFFER_H
+ 
+ #include "hb-common.h"
+ #include "hb-unicode.h"
+ #include "hb-font.h"
+ 
+ HB_BEGIN_DECLS
+ 
+-
++/**
++ * hb_glyph_info_t:
++ * @codepoint: either a Unicode code point (before shaping) or a glyph index
++ *             (after shaping).
++ * @mask: 
++ * @cluster: the index of the character in the original text that corresponds
++ *           to this #hb_glyph_info_t, or whatever the client passes to
++ *           hb_buffer_add(). More than one #hb_glyph_info_t can have the same
++ *           @cluster value, if they resulted from the same character (e.g. one
++ *           to many glyph substitution), and when more than one character gets
++ *           merged in the same glyph (e.g. many to one glyph substitution) the
++ *           #hb_glyph_info_t will have the smallest cluster value of them.
++ *           By default some characters are merged into the same cluster
++ *           (e.g. combining marks have the same cluster as their bases)
++ *           even if they are separate glyphs, hb_buffer_set_cluster_level()
++ *           allow selecting more fine-grained cluster handling.
++ *
++ * The #hb_glyph_info_t is the structure that holds information about the
++ * glyphs and their relation to input text.
++ *
++ */
+ typedef struct hb_glyph_info_t {
+   hb_codepoint_t codepoint;
+   hb_mask_t      mask;
+   uint32_t       cluster;
+ 
+   /*< private >*/
+   hb_var_int_t   var1;
+   hb_var_int_t   var2;
+ } hb_glyph_info_t;
+ 
++/**
++ * hb_glyph_position_t:
++ * @x_advance: how much the line advances after drawing this glyph when setting
++ *             text in horizontal direction.
++ * @y_advance: how much the line advances after drawing this glyph when setting
++ *             text in vertical direction.
++ * @x_offset: how much the glyph moves on the X-axis before drawing it, this
++ *            should not affect how much the line advances.
++ * @y_offset: how much the glyph moves on the Y-axis before drawing it, this
++ *            should not affect how much the line advances.
++ *
++ * The #hb_glyph_position_t is the structure that holds the positions of the
++ * glyph in both horizontal and vertical directions. All positions in
++ * #hb_glyph_position_t are relative to the current point.
++ *
++ */
+ typedef struct hb_glyph_position_t {
+   hb_position_t  x_advance;
+   hb_position_t  y_advance;
+   hb_position_t  x_offset;
+   hb_position_t  y_offset;
+ 
+   /*< private >*/
+   hb_var_int_t   var;
+ } hb_glyph_position_t;
+ 
+-
++/**
++ * hb_segment_properties_t:
++ * @direction: the #hb_direction_t of the buffer, see hb_buffer_set_direction().
++ * @script: the #hb_script_t of the buffer, see hb_buffer_set_script().
++ * @language: the #hb_language_t of the buffer, see hb_buffer_set_language().
++ *
++ * The structure that holds various text properties of an #hb_buffer_t. Can be
++ * set and retrieved using hb_buffer_set_segment_properties() and
++ * hb_buffer_get_segment_properties(), respectively.
++ */
+ typedef struct hb_segment_properties_t {
+   hb_direction_t  direction;
+   hb_script_t     script;
+   hb_language_t   language;
+   /*< private >*/
+   void           *reserved1;
+   void           *reserved2;
+ } hb_segment_properties_t;
+ 
+ #define HB_SEGMENT_PROPERTIES_DEFAULT {HB_DIRECTION_INVALID, \
+ 				       HB_SCRIPT_INVALID, \
+ 				       HB_LANGUAGE_INVALID, \
+ 				       NULL, \
+ 				       NULL}
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_segment_properties_equal (const hb_segment_properties_t *a,
+ 			     const hb_segment_properties_t *b);
+ 
+-unsigned int
++HB_EXTERN unsigned int
+ hb_segment_properties_hash (const hb_segment_properties_t *p);
+ 
+ 
+ 
+-/*
+- * hb_buffer_t
++/**
++ * hb_buffer_t:
++ *
++ * The main structure holding the input text and its properties before shaping,
++ * and output glyphs and their information after shaping.
+  */
+ 
+ typedef struct hb_buffer_t hb_buffer_t;
+ 
+-hb_buffer_t *
++HB_EXTERN hb_buffer_t *
+ hb_buffer_create (void);
+ 
+-hb_buffer_t *
++HB_EXTERN hb_buffer_t *
+ hb_buffer_get_empty (void);
+ 
+-hb_buffer_t *
++HB_EXTERN hb_buffer_t *
+ hb_buffer_reference (hb_buffer_t *buffer);
+ 
+-void
++HB_EXTERN void
+ hb_buffer_destroy (hb_buffer_t *buffer);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_buffer_set_user_data (hb_buffer_t        *buffer,
+ 			 hb_user_data_key_t *key,
+ 			 void *              data,
+ 			 hb_destroy_func_t   destroy,
+ 			 hb_bool_t           replace);
+ 
+-void *
++HB_EXTERN void *
+ hb_buffer_get_user_data (hb_buffer_t        *buffer,
+ 			 hb_user_data_key_t *key);
+ 
+-
++/**
++ * hb_buffer_content_type_t:
++ * @HB_BUFFER_CONTENT_TYPE_INVALID: Initial value for new buffer.
++ * @HB_BUFFER_CONTENT_TYPE_UNICODE: The buffer contains input characters (before shaping).
++ * @HB_BUFFER_CONTENT_TYPE_GLYPHS: The buffer contains output glyphs (after shaping).
++ */
+ typedef enum {
+   HB_BUFFER_CONTENT_TYPE_INVALID = 0,
+   HB_BUFFER_CONTENT_TYPE_UNICODE,
+   HB_BUFFER_CONTENT_TYPE_GLYPHS
+ } hb_buffer_content_type_t;
+ 
+-void
++HB_EXTERN void
+ hb_buffer_set_content_type (hb_buffer_t              *buffer,
+ 			    hb_buffer_content_type_t  content_type);
+ 
+-hb_buffer_content_type_t
++HB_EXTERN hb_buffer_content_type_t
+ hb_buffer_get_content_type (hb_buffer_t *buffer);
+ 
+ 
+-void
++HB_EXTERN void
+ hb_buffer_set_unicode_funcs (hb_buffer_t        *buffer,
+ 			     hb_unicode_funcs_t *unicode_funcs);
+ 
+-hb_unicode_funcs_t *
++HB_EXTERN hb_unicode_funcs_t *
+ hb_buffer_get_unicode_funcs (hb_buffer_t        *buffer);
+ 
+-void
++HB_EXTERN void
+ hb_buffer_set_direction (hb_buffer_t    *buffer,
+ 			 hb_direction_t  direction);
+ 
+-hb_direction_t
++HB_EXTERN hb_direction_t
+ hb_buffer_get_direction (hb_buffer_t *buffer);
+ 
+-void
++HB_EXTERN void
+ hb_buffer_set_script (hb_buffer_t *buffer,
+ 		      hb_script_t  script);
+ 
+-hb_script_t
++HB_EXTERN hb_script_t
+ hb_buffer_get_script (hb_buffer_t *buffer);
+ 
+-void
++HB_EXTERN void
+ hb_buffer_set_language (hb_buffer_t   *buffer,
+ 			hb_language_t  language);
+ 
+ 
+-hb_language_t
++HB_EXTERN hb_language_t
+ hb_buffer_get_language (hb_buffer_t *buffer);
+ 
+-void
++HB_EXTERN void
+ hb_buffer_set_segment_properties (hb_buffer_t *buffer,
+ 				  const hb_segment_properties_t *props);
+ 
+-void
++HB_EXTERN void
+ hb_buffer_get_segment_properties (hb_buffer_t *buffer,
+ 				  hb_segment_properties_t *props);
+ 
+-void
++HB_EXTERN void
+ hb_buffer_guess_segment_properties (hb_buffer_t *buffer);
+ 
+ 
+-/*
++/**
++ * hb_buffer_flags_t:
++ * @HB_BUFFER_FLAG_DEFAULT: the default buffer flag.
++ * @HB_BUFFER_FLAG_BOT: flag indicating that special handling of the beginning
++ *                      of text paragraph can be applied to this buffer. Should usually
++ *                      be set, unless you are passing to the buffer only part
++ *                      of the text without the full context.
++ * @HB_BUFFER_FLAG_EOT: flag indicating that special handling of the end of text
++ *                      paragraph can be applied to this buffer, similar to
++ *                      @HB_BUFFER_FLAG_EOT.
++ * @HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES:
++ *                      flag indication that character with Default_Ignorable
++ *                      Unicode property should use the corresponding glyph
++ *                      from the font, instead of hiding them (currently done
++ *                      by replacing them with the space glyph and zeroing the
++ *                      advance width.)
++ *
+  * Since: 0.9.20
+  */
+ typedef enum { /*< flags >*/
+   HB_BUFFER_FLAG_DEFAULT			= 0x00000000u,
+   HB_BUFFER_FLAG_BOT				= 0x00000001u, /* Beginning-of-text */
+   HB_BUFFER_FLAG_EOT				= 0x00000002u, /* End-of-text */
+   HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES	= 0x00000004u
+ } hb_buffer_flags_t;
+ 
+-void
++HB_EXTERN void
+ hb_buffer_set_flags (hb_buffer_t       *buffer,
+ 		     hb_buffer_flags_t  flags);
+ 
+-hb_buffer_flags_t
++HB_EXTERN hb_buffer_flags_t
+ hb_buffer_get_flags (hb_buffer_t *buffer);
+ 
+ /*
+  * Since: 0.9.42
+  */
+ typedef enum {
+   HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES	= 0,
+   HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS	= 1,
+   HB_BUFFER_CLUSTER_LEVEL_CHARACTERS		= 2,
+   HB_BUFFER_CLUSTER_LEVEL_DEFAULT = HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES
+ } hb_buffer_cluster_level_t;
+ 
+-void
++HB_EXTERN void
+ hb_buffer_set_cluster_level (hb_buffer_t               *buffer,
+ 			     hb_buffer_cluster_level_t  cluster_level);
+ 
+-hb_buffer_cluster_level_t
++HB_EXTERN hb_buffer_cluster_level_t
+ hb_buffer_get_cluster_level (hb_buffer_t *buffer);
+ 
++/**
++ * HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT:
++ *
++ * The default code point for replacing invalid characters in a given encoding.
++ * Set to U+FFFD REPLACEMENT CHARACTER.
++ *
++ * Since: 0.9.31
++ */
+ #define HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT 0xFFFDu
+ 
+-/* Sets codepoint used to replace invalid UTF-8/16/32 entries.
+- * Default is 0xFFFDu. */
+-void
++HB_EXTERN void
+ hb_buffer_set_replacement_codepoint (hb_buffer_t    *buffer,
+ 				     hb_codepoint_t  replacement);
+ 
+-hb_codepoint_t
++HB_EXTERN hb_codepoint_t
+ hb_buffer_get_replacement_codepoint (hb_buffer_t    *buffer);
+ 
+ 
+-/* Resets the buffer.  Afterwards it's as if it was just created,
+- * except that it has a larger buffer allocated perhaps... */
+-void
++HB_EXTERN void
+ hb_buffer_reset (hb_buffer_t *buffer);
+ 
+-/* Like reset, but does NOT clear unicode_funcs and replacement_codepoint. */
+-void
++HB_EXTERN void
+ hb_buffer_clear_contents (hb_buffer_t *buffer);
+ 
+-/* Returns false if allocation failed */
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_buffer_pre_allocate (hb_buffer_t  *buffer,
+ 		        unsigned int  size);
+ 
+ 
+-/* Returns false if allocation has failed before */
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_buffer_allocation_successful (hb_buffer_t  *buffer);
+ 
+-void
++HB_EXTERN void
+ hb_buffer_reverse (hb_buffer_t *buffer);
+ 
+-void
++HB_EXTERN void
+ hb_buffer_reverse_range (hb_buffer_t *buffer,
+ 			 unsigned int start, unsigned int end);
+ 
+-void
++HB_EXTERN void
+ hb_buffer_reverse_clusters (hb_buffer_t *buffer);
+ 
+ 
+ /* Filling the buffer in */
+ 
+-void
++HB_EXTERN void
+ hb_buffer_add (hb_buffer_t    *buffer,
+ 	       hb_codepoint_t  codepoint,
+ 	       unsigned int    cluster);
+ 
+-void
++HB_EXTERN void
+ hb_buffer_add_utf8 (hb_buffer_t  *buffer,
+ 		    const char   *text,
+ 		    int           text_length,
+ 		    unsigned int  item_offset,
+ 		    int           item_length);
+ 
+-void
++HB_EXTERN void
+ hb_buffer_add_utf16 (hb_buffer_t    *buffer,
+ 		     const uint16_t *text,
+ 		     int             text_length,
+ 		     unsigned int    item_offset,
+ 		     int             item_length);
+ 
+-void
++HB_EXTERN void
+ hb_buffer_add_utf32 (hb_buffer_t    *buffer,
+ 		     const uint32_t *text,
+ 		     int             text_length,
+ 		     unsigned int    item_offset,
+ 		     int             item_length);
+ 
+-/* Allows only access to first 256 Unicode codepoints. */
+-void
++HB_EXTERN void
+ hb_buffer_add_latin1 (hb_buffer_t   *buffer,
+ 		      const uint8_t *text,
+ 		      int            text_length,
+ 		      unsigned int   item_offset,
+ 		      int            item_length);
+ 
+-/* Like add_utf32 but does NOT check for invalid Unicode codepoints. */
+-void
++HB_EXTERN void
+ hb_buffer_add_codepoints (hb_buffer_t          *buffer,
+ 			  const hb_codepoint_t *text,
+ 			  int                   text_length,
+ 			  unsigned int          item_offset,
+ 			  int                   item_length);
+ 
+ 
+-/* Clears any new items added at the end */
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_buffer_set_length (hb_buffer_t  *buffer,
+ 		      unsigned int  length);
+ 
+-/* Return value valid as long as buffer not modified */
+-unsigned int
++HB_EXTERN unsigned int
+ hb_buffer_get_length (hb_buffer_t *buffer);
+ 
+ /* Getting glyphs out of the buffer */
+ 
+-/* Return value valid as long as buffer not modified */
+-hb_glyph_info_t *
++HB_EXTERN hb_glyph_info_t *
+ hb_buffer_get_glyph_infos (hb_buffer_t  *buffer,
+                            unsigned int *length);
+ 
+-/* Return value valid as long as buffer not modified */
+-hb_glyph_position_t *
++HB_EXTERN hb_glyph_position_t *
+ hb_buffer_get_glyph_positions (hb_buffer_t  *buffer,
+                                unsigned int *length);
+ 
+ 
+-/* Reorders a glyph buffer to have canonical in-cluster glyph order / position.
+- * The resulting clusters should behave identical to pre-reordering clusters.
+- * NOTE: This has nothing to do with Unicode normalization. */
+-void
++HB_EXTERN void
+ hb_buffer_normalize_glyphs (hb_buffer_t *buffer);
+ 
+ 
+ /*
+  * Serialize
+  */
+ 
+-/*
++/**
++ * hb_buffer_serialize_flags_t:
++ * @HB_BUFFER_SERIALIZE_FLAG_DEFAULT: serialize glyph names, clusters and positions.
++ * @HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS: do not serialize glyph cluster.
++ * @HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS: do not serialize glyph position information.
++ * @HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES: do no serialize glyph name.
++ * @HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS: serialize glyph extents.
++ *
++ * Flags that control what glyph information are serialized in hb_buffer_serialize_glyphs().
++ *
+  * Since: 0.9.20
+  */
+ typedef enum { /*< flags >*/
+   HB_BUFFER_SERIALIZE_FLAG_DEFAULT		= 0x00000000u,
+   HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS		= 0x00000001u,
+   HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS		= 0x00000002u,
+   HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES	= 0x00000004u,
+   HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS	= 0x00000008u
+ } hb_buffer_serialize_flags_t;
+ 
++/**
++ * hb_buffer_serialize_format_t:
++ * @HB_BUFFER_SERIALIZE_FORMAT_TEXT: a human-readable, plain text format.
++ * @HB_BUFFER_SERIALIZE_FORMAT_JSON: a machine-readable JSON format.
++ * @HB_BUFFER_SERIALIZE_FORMAT_INVALID: invalid format.
++ *
++ * The buffer serialization and de-serialization format used in
++ * hb_buffer_serialize_glyphs() and hb_buffer_deserialize_glyphs().
++ *
++ * Since: 0.9.2
++ */
+ typedef enum {
+   HB_BUFFER_SERIALIZE_FORMAT_TEXT	= HB_TAG('T','E','X','T'),
+   HB_BUFFER_SERIALIZE_FORMAT_JSON	= HB_TAG('J','S','O','N'),
+   HB_BUFFER_SERIALIZE_FORMAT_INVALID	= HB_TAG_NONE
+ } hb_buffer_serialize_format_t;
+ 
+-/* len=-1 means str is NUL-terminated. */
+-hb_buffer_serialize_format_t
++HB_EXTERN hb_buffer_serialize_format_t
+ hb_buffer_serialize_format_from_string (const char *str, int len);
+ 
+-const char *
++HB_EXTERN const char *
+ hb_buffer_serialize_format_to_string (hb_buffer_serialize_format_t format);
+ 
+-const char **
++HB_EXTERN const char **
+ hb_buffer_serialize_list_formats (void);
+ 
+-/* Returns number of items, starting at start, that were serialized. */
+-unsigned int
++HB_EXTERN unsigned int
+ hb_buffer_serialize_glyphs (hb_buffer_t *buffer,
+ 			    unsigned int start,
+ 			    unsigned int end,
+ 			    char *buf,
+ 			    unsigned int buf_size,
+-			    unsigned int *buf_consumed, /* May be NULL */
+-			    hb_font_t *font, /* May be NULL */
++			    unsigned int *buf_consumed,
++			    hb_font_t *font,
+ 			    hb_buffer_serialize_format_t format,
+ 			    hb_buffer_serialize_flags_t flags);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_buffer_deserialize_glyphs (hb_buffer_t *buffer,
+ 			      const char *buf,
+-			      int buf_len, /* -1 means nul-terminated */
+-			      const char **end_ptr, /* May be NULL */
+-			      hb_font_t *font, /* May be NULL */
++			      int buf_len,
++			      const char **end_ptr,
++			      hb_font_t *font,
+ 			      hb_buffer_serialize_format_t format);
+ 
+ 
++/*
++ * Debugging.
++ */
++
++typedef hb_bool_t	(*hb_buffer_message_func_t)	(hb_buffer_t *buffer,
++							 hb_font_t   *font,
++							 const char  *message,
++							 void        *user_data);
++
++HB_EXTERN void
++hb_buffer_set_message_func (hb_buffer_t *buffer,
++			    hb_buffer_message_func_t func,
++			    void *user_data, hb_destroy_func_t destroy);
++
++
+ HB_END_DECLS
+ 
+ #endif /* HB_BUFFER_H */
+diff --git a/gfx/harfbuzz/src/hb-common.cc b/gfx/harfbuzz/src/hb-common.cc
+--- a/gfx/harfbuzz/src/hb-common.cc
++++ b/gfx/harfbuzz/src/hb-common.cc
+@@ -276,22 +276,25 @@ retry:
+ #endif
+ 
+   return lang;
+ }
+ 
+ 
+ /**
+  * hb_language_from_string:
+- * @str: (array length=len) (element-type uint8_t): 
+- * @len: 
++ * @str: (array length=len) (element-type uint8_t): a string representing
++ *       ISO 639 language code
++ * @len: length of the @str, or -1 if it is %NULL-terminated.
+  *
+- * 
++ * Converts @str representing an ISO 639 language code to the corresponding
++ * #hb_language_t.
+  *
+  * Return value: (transfer none):
++ * The #hb_language_t corresponding to the ISO 639 language code.
+  *
+  * Since: 0.9.2
+  **/
+ hb_language_t
+ hb_language_from_string (const char *str, int len)
+ {
+   if (!str || !len || !*str)
+     return HB_LANGUAGE_INVALID;
+@@ -309,21 +312,23 @@ hb_language_from_string (const char *str
+   else
+     item = lang_find_or_insert (str);
+ 
+   return likely (item) ? item->lang : HB_LANGUAGE_INVALID;
+ }
+ 
+ /**
+  * hb_language_to_string:
+- * @language: 
++ * @language: an #hb_language_t to convert.
+  *
+- * 
++ * See hb_language_from_string().
+  *
+- * Return value: (transfer none): 
++ * Return value: (transfer none):
++ * A %NULL-terminated string representing the @language. Must not be freed by
++ * the caller.
+  *
+  * Since: 0.9.2
+  **/
+ const char *
+ hb_language_to_string (hb_language_t language)
+ {
+   /* This is actually NULL-safe! */
+   return language->s;
+@@ -352,21 +357,22 @@ hb_language_get_default (void)
+   return default_language;
+ }
+ 
+ 
+ /* hb_script_t */
+ 
+ /**
+  * hb_script_from_iso15924_tag:
+- * @tag: 
++ * @tag: an #hb_tag_t representing an ISO 15924 tag.
+  *
+- * 
++ * Converts an ISO 15924 script tag to a corresponding #hb_script_t.
+  *
+  * Return value: 
++ * An #hb_script_t corresponding to the ISO 15924 tag.
+  *
+  * Since: 0.9.2
+  **/
+ hb_script_t
+ hb_script_from_iso15924_tag (hb_tag_t tag)
+ {
+   if (unlikely (tag == HB_TAG_NONE))
+     return HB_SCRIPT_INVALID;
+@@ -396,38 +402,43 @@ hb_script_from_iso15924_tag (hb_tag_t ta
+     return (hb_script_t) tag;
+ 
+   /* Otherwise, return unknown */
+   return HB_SCRIPT_UNKNOWN;
+ }
+ 
+ /**
+  * hb_script_from_string:
+- * @s: (array length=len) (element-type uint8_t): 
+- * @len: 
++ * @str: (array length=len) (element-type uint8_t): a string representing an
++ *       ISO 15924 tag.
++ * @len: length of the @str, or -1 if it is %NULL-terminated.
+  *
+- * 
++ * Converts a string @str representing an ISO 15924 script tag to a
++ * corresponding #hb_script_t. Shorthand for hb_tag_from_string() then
++ * hb_script_from_iso15924_tag().
+  *
+  * Return value: 
++ * An #hb_script_t corresponding to the ISO 15924 tag.
+  *
+  * Since: 0.9.2
+  **/
+ hb_script_t
+-hb_script_from_string (const char *s, int len)
++hb_script_from_string (const char *str, int len)
+ {
+-  return hb_script_from_iso15924_tag (hb_tag_from_string (s, len));
++  return hb_script_from_iso15924_tag (hb_tag_from_string (str, len));
+ }
+ 
+ /**
+  * hb_script_to_iso15924_tag:
+- * @script: 
++ * @script: an #hb_script_ to convert.
+  *
+- * 
++ * See hb_script_from_iso15924_tag().
+  *
+- * Return value: 
++ * Return value:
++ * An #hb_tag_t representing an ISO 15924 script tag.
+  *
+  * Since: 0.9.2
+  **/
+ hb_tag_t
+ hb_script_to_iso15924_tag (hb_script_t script)
+ {
+   return (hb_tag_t) script;
+ }
+@@ -516,17 +527,17 @@ hb_user_data_array_t::set (hb_user_data_
+ 
+   if (replace) {
+     if (!data && !destroy) {
+       items.remove (key, lock);
+       return true;
+     }
+   }
+   hb_user_data_item_t item = {key, data, destroy};
+-  bool ret = !!items.replace_or_insert (item, lock, replace);
++  bool ret = !!items.replace_or_insert (item, lock, (bool) replace);
+ 
+   return ret;
+ }
+ 
+ void *
+ hb_user_data_array_t::get (hb_user_data_key_t *key)
+ {
+   hb_user_data_item_t item = {NULL };
+diff --git a/gfx/harfbuzz/src/hb-common.h b/gfx/harfbuzz/src/hb-common.h
+--- a/gfx/harfbuzz/src/hb-common.h
++++ b/gfx/harfbuzz/src/hb-common.h
+@@ -93,64 +93,69 @@ typedef uint32_t hb_tag_t;
+ #define HB_TAG(c1,c2,c3,c4) ((hb_tag_t)((((uint8_t)(c1))<<24)|(((uint8_t)(c2))<<16)|(((uint8_t)(c3))<<8)|((uint8_t)(c4))))
+ #define HB_UNTAG(tag)   ((uint8_t)((tag)>>24)), ((uint8_t)((tag)>>16)), ((uint8_t)((tag)>>8)), ((uint8_t)(tag))
+ 
+ #define HB_TAG_NONE HB_TAG(0,0,0,0)
+ #define HB_TAG_MAX HB_TAG(0xff,0xff,0xff,0xff)
+ #define HB_TAG_MAX_SIGNED HB_TAG(0x7f,0xff,0xff,0xff)
+ 
+ /* len=-1 means str is NUL-terminated. */
+-hb_tag_t
++HB_EXTERN hb_tag_t
+ hb_tag_from_string (const char *str, int len);
+ 
+ /* buf should have 4 bytes. */
+-void
++HB_EXTERN void
+ hb_tag_to_string (hb_tag_t tag, char *buf);
+ 
+ 
+-/* hb_direction_t */
+-
++/**
++ * hb_direction_t:
++ * @HB_DIRECTION_INVALID: Initial, unset direction.
++ * @HB_DIRECTION_LTR: Text is set horizontally from left to right.
++ * @HB_DIRECTION_RTL: Text is set horizontally from right to left.
++ * @HB_DIRECTION_TTB: Text is set vertically from top to bottom.
++ * @HB_DIRECTION_BTT: Text is set vertically from bottom to top.
++ */
+ typedef enum {
+   HB_DIRECTION_INVALID = 0,
+   HB_DIRECTION_LTR = 4,
+   HB_DIRECTION_RTL,
+   HB_DIRECTION_TTB,
+   HB_DIRECTION_BTT
+ } hb_direction_t;
+ 
+ /* len=-1 means str is NUL-terminated */
+-hb_direction_t
++HB_EXTERN hb_direction_t
+ hb_direction_from_string (const char *str, int len);
+ 
+-const char *
++HB_EXTERN const char *
+ hb_direction_to_string (hb_direction_t direction);
+ 
+ #define HB_DIRECTION_IS_VALID(dir)	((((unsigned int) (dir)) & ~3U) == 4)
+ /* Direction must be valid for the following */
+ #define HB_DIRECTION_IS_HORIZONTAL(dir)	((((unsigned int) (dir)) & ~1U) == 4)
+ #define HB_DIRECTION_IS_VERTICAL(dir)	((((unsigned int) (dir)) & ~1U) == 6)
+ #define HB_DIRECTION_IS_FORWARD(dir)	((((unsigned int) (dir)) & ~2U) == 4)
+ #define HB_DIRECTION_IS_BACKWARD(dir)	((((unsigned int) (dir)) & ~2U) == 5)
+ #define HB_DIRECTION_REVERSE(dir)	((hb_direction_t) (((unsigned int) (dir)) ^ 1))
+ 
+ 
+ /* hb_language_t */
+ 
+ typedef const struct hb_language_impl_t *hb_language_t;
+ 
+-/* len=-1 means str is NUL-terminated */
+-hb_language_t
++HB_EXTERN hb_language_t
+ hb_language_from_string (const char *str, int len);
+ 
+-const char *
++HB_EXTERN const char *
+ hb_language_to_string (hb_language_t language);
+ 
+ #define HB_LANGUAGE_INVALID ((hb_language_t) NULL)
+ 
+-hb_language_t
++HB_EXTERN hb_language_t
+ hb_language_get_default (void);
+ 
+ 
+ /* hb_script_t */
+ 
+ /* http://unicode.org/iso15924/ */
+ /* http://goo.gl/x9ilM */
+ /* Unicode Character Database property: Script (sc) */
+@@ -319,28 +324,26 @@ typedef enum
+   _HB_SCRIPT_MAX_VALUE				= HB_TAG_MAX, /*< skip >*/
+   _HB_SCRIPT_MAX_VALUE_SIGNED			= HB_TAG_MAX_SIGNED /*< skip >*/
+ 
+ } hb_script_t;
+ 
+ 
+ /* Script functions */
+ 
+-hb_script_t
++HB_EXTERN hb_script_t
+ hb_script_from_iso15924_tag (hb_tag_t tag);
+ 
+-/* sugar for tag_from_string() then script_from_iso15924_tag */
+-/* len=-1 means s is NUL-terminated */
+-hb_script_t
+-hb_script_from_string (const char *s, int len);
++HB_EXTERN hb_script_t
++hb_script_from_string (const char *str, int len);
+ 
+-hb_tag_t
++HB_EXTERN hb_tag_t
+ hb_script_to_iso15924_tag (hb_script_t script);
+ 
+-hb_direction_t
++HB_EXTERN hb_direction_t
+ hb_script_get_horizontal_direction (hb_script_t script);
+ 
+ 
+ /* User data */
+ 
+ typedef struct hb_user_data_key_t {
+   /*< private >*/
+   char unused;
+diff --git a/gfx/harfbuzz/src/hb-coretext.cc b/gfx/harfbuzz/src/hb-coretext.cc
+--- a/gfx/harfbuzz/src/hb-coretext.cc
++++ b/gfx/harfbuzz/src/hb-coretext.cc
+@@ -171,16 +171,53 @@ hb_coretext_shaper_font_data_t *
+   data->y_mult = (CGFloat) font->y_scale / font_size;
+   data->ct_font = CTFontCreateWithGraphicsFont (face_data, font_size, NULL, NULL);
+   if (unlikely (!data->ct_font)) {
+     DEBUG_MSG (CORETEXT, font, "Font CTFontCreateWithGraphicsFont() failed");
+     free (data);
+     return NULL;
+   }
+ 
++  /* Create font copy with cascade list that has LastResort first; this speeds up CoreText
++   * font fallback which we don't need anyway. */
++  {
++    // TODO Handle allocation failures?
++    CTFontDescriptorRef last_resort = CTFontDescriptorCreateWithNameAndSize(CFSTR("LastResort"), 0);
++    CFArrayRef cascade_list = CFArrayCreate (kCFAllocatorDefault,
++					     (const void **) &last_resort,
++					     1,
++					     &kCFTypeArrayCallBacks);
++    CFRelease (last_resort);
++    CFDictionaryRef attributes = CFDictionaryCreate (kCFAllocatorDefault,
++						     (const void **) &kCTFontCascadeListAttribute,
++						     (const void **) &cascade_list,
++						     1,
++						     &kCFTypeDictionaryKeyCallBacks,
++						     &kCFTypeDictionaryValueCallBacks);
++    CFRelease (cascade_list);
++
++    CTFontDescriptorRef new_font_desc = CTFontDescriptorCreateWithAttributes (attributes);
++    CFRelease (attributes);
++
++    CTFontRef new_ct_font = CTFontCreateCopyWithAttributes (data->ct_font, 0.0, NULL, new_font_desc);
++    if (new_ct_font)
++    {
++      CFRelease (data->ct_font);
++      data->ct_font = new_ct_font;
++    }
++    else
++      DEBUG_MSG (CORETEXT, font, "Font copy with empty cascade list failed");
++  }
++
++  if (unlikely (!data->ct_font)) {
++    DEBUG_MSG (CORETEXT, font, "Font CTFontCreateWithGraphicsFont() failed");
++    free (data);
++    return NULL;
++  }
++
+   return data;
+ }
+ 
+ void
+ _hb_coretext_shaper_font_data_destroy (hb_coretext_shaper_font_data_t *data)
+ {
+   CFRelease (data->ct_font);
+   free (data);
+@@ -688,17 +725,16 @@ resize_and_retry:
+     /* Adjust scratch, pchars, and log_cluster arrays.  This is ugly, but really the
+      * cleanest way to do without completely restructuring the rest of this shaper. */
+     scratch = buffer->get_scratch_buffer (&scratch_size);
+     pchars = reinterpret_cast<UniChar *> (((char *) scratch + ((char *) pchars - (char *) old_scratch)));
+     log_clusters = reinterpret_cast<unsigned int *> (((char *) scratch + ((char *) log_clusters - (char *) old_scratch)));
+     scratch += old_scratch_used;
+     scratch_size -= old_scratch_used;
+   }
+-retry:
+   {
+     string_ref = CFStringCreateWithCharactersNoCopy (NULL,
+ 						     pchars, chars_len,
+ 						     kCFAllocatorNull);
+     if (unlikely (!string_ref))
+       FAIL ("CFStringCreateWithCharactersNoCopy failed");
+ 
+     /* Create an attributed string, populate it, and create a line from it, then release attributed string. */
+@@ -843,21 +879,19 @@ retry:
+ 	 *
+ 	 * Looks like if we really want to be sure here we have to modify the
+ 	 * font to change the name table, similar to what we do in the uniscribe
+ 	 * backend.
+ 	 *
+ 	 * However, even that wouldn't work if we were passed in the CGFont to
+ 	 * begin with.
+ 	 *
+-	 * Webkit uses a slightly different approach: it installs LastResort
+-	 * as fallback chain, and then checks PS name of used font against
+-	 * LastResort.  That one is safe for any font except for LastResort,
+-	 * as opposed to ours, which can fail if we are using any uninstalled
+-	 * font that has the same name as an installed font.
++	 * We might switch to checking PS name against "LastResort".  That would
++	 * be safe for all fonts except for those named "Last Resort".  Might be
++	 * better than what we have right now.
+ 	 *
+ 	 * See: http://github.com/behdad/harfbuzz/pull/36
+ 	 */
+ 	bool matched = false;
+ 	for (unsigned int i = 0; i < range_records.len; i++)
+ 	  if (range_records[i].font && CFEqual (run_ct_font, range_records[i].font))
+ 	  {
+ 	    matched = true;
+@@ -1124,20 +1158,16 @@ fail:
+   return ret;
+ }
+ 
+ 
+ /*
+  * AAT shaper
+  */
+ 
+-HB_SHAPER_DATA_ENSURE_DECLARE(coretext_aat, face)
+-HB_SHAPER_DATA_ENSURE_DECLARE(coretext_aat, font)
+-
+-
+ /*
+  * shaper face data
+  */
+ 
+ struct hb_coretext_aat_shaper_face_data_t {};
+ 
+ hb_coretext_aat_shaper_face_data_t *
+ _hb_coretext_aat_shaper_face_data_create (hb_face_t *face)
+diff --git a/gfx/harfbuzz/src/hb-coretext.h b/gfx/harfbuzz/src/hb-coretext.h
+--- a/gfx/harfbuzz/src/hb-coretext.h
++++ b/gfx/harfbuzz/src/hb-coretext.h
+@@ -39,22 +39,22 @@
+ 
+ HB_BEGIN_DECLS
+ 
+ 
+ #define HB_CORETEXT_TAG_MORT HB_TAG('m','o','r','t')
+ #define HB_CORETEXT_TAG_MORX HB_TAG('m','o','r','x')
+ 
+ 
+-hb_face_t *
++HB_EXTERN hb_face_t *
+ hb_coretext_face_create (CGFontRef cg_font);
+ 
+ 
+-CGFontRef
++HB_EXTERN CGFontRef
+ hb_coretext_face_get_cg_font (hb_face_t *face);
+ 
+-CTFontRef
++HB_EXTERN CTFontRef
+ hb_coretext_font_get_ct_font (hb_font_t *font);
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_CORETEXT_H */
+diff --git a/gfx/harfbuzz/src/hb-directwrite.cc b/gfx/harfbuzz/src/hb-directwrite.cc
+new file mode 100644
+--- /dev/null
++++ b/gfx/harfbuzz/src/hb-directwrite.cc
+@@ -0,0 +1,827 @@
++/*
++ * Copyright © 2015  Ebrahim Byagowi
++ *
++ *  This is part of HarfBuzz, a text shaping library.
++ *
++ * Permission is hereby granted, without written agreement and without
++ * license or royalty fees, to use, copy, modify, and distribute this
++ * software and its documentation for any purpose, provided that the
++ * above copyright notice and the following two paragraphs appear in
++ * all copies of this software.
++ *
++ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
++ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
++ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
++ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ *
++ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
++ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
++ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
++ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
++ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
++ */
++
++#define HB_SHAPER directwrite
++#include "hb-shaper-impl-private.hh"
++
++#include <dwrite.h>
++
++#include "hb-directwrite.h"
++
++#include "hb-open-file-private.hh"
++#include "hb-ot-name-table.hh"
++#include "hb-ot-tag.h"
++
++
++#ifndef HB_DEBUG_DIRECTWRITE
++#define HB_DEBUG_DIRECTWRITE (HB_DEBUG+0)
++#endif
++
++HB_SHAPER_DATA_ENSURE_DECLARE(directwrite, face)
++HB_SHAPER_DATA_ENSURE_DECLARE(directwrite, font)
++
++/*
++* shaper face data
++*/
++
++struct hb_directwrite_shaper_face_data_t {
++  HANDLE fh;
++  wchar_t face_name[LF_FACESIZE];
++};
++
++/* face_name should point to a wchar_t[LF_FACESIZE] object. */
++static void
++_hb_generate_unique_face_name(wchar_t *face_name, unsigned int *plen)
++{
++  /* We'll create a private name for the font from a UUID using a simple,
++  * somewhat base64-like encoding scheme */
++  const char *enc = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-";
++  UUID id;
++  UuidCreate ((UUID*)&id);
++  ASSERT_STATIC (2 + 3 * (16 / 2) < LF_FACESIZE);
++  unsigned int name_str_len = 0;
++  face_name[name_str_len++] = 'F';
++  face_name[name_str_len++] = '_';
++  unsigned char *p = (unsigned char *)&id;
++  for (unsigned int i = 0; i < 16; i += 2)
++  {
++    /* Spread the 16 bits from two bytes of the UUID across three chars of face_name,
++    * using the bits in groups of 5,5,6 to select chars from enc.
++    * This will generate 24 characters; with the 'F_' prefix we already provided,
++    * the name will be 26 chars (plus the NUL terminator), so will always fit within
++    * face_name (LF_FACESIZE = 32). */
++    face_name[name_str_len++] = enc[p[i] >> 3];
++    face_name[name_str_len++] = enc[((p[i] << 2) | (p[i + 1] >> 6)) & 0x1f];
++    face_name[name_str_len++] = enc[p[i + 1] & 0x3f];
++  }
++  face_name[name_str_len] = 0;
++  if (plen)
++    *plen = name_str_len;
++}
++
++/* Destroys blob. */
++static hb_blob_t *
++_hb_rename_font(hb_blob_t *blob, wchar_t *new_name)
++{
++  /* Create a copy of the font data, with the 'name' table replaced by a
++   * table that names the font with our private F_* name created above.
++   * For simplicity, we just append a new 'name' table and update the
++   * sfnt directory; the original table is left in place, but unused.
++   *
++   * The new table will contain just 5 name IDs: family, style, unique,
++   * full, PS. All of them point to the same name data with our unique name.
++   */
++
++  blob = OT::Sanitizer<OT::OpenTypeFontFile>::sanitize (blob);
++
++  unsigned int length, new_length, name_str_len;
++  const char *orig_sfnt_data = hb_blob_get_data (blob, &length);
++
++  _hb_generate_unique_face_name (new_name, &name_str_len);
++
++  static const uint16_t name_IDs[] = { 1, 2, 3, 4, 6 };
++
++  unsigned int name_table_length = OT::name::min_size +
++    ARRAY_LENGTH(name_IDs) * OT::NameRecord::static_size +
++    name_str_len * 2; /* for name data in UTF16BE form */
++  unsigned int name_table_offset = (length + 3) & ~3;
++
++  new_length = name_table_offset + ((name_table_length + 3) & ~3);
++  void *new_sfnt_data = calloc(1, new_length);
++  if (!new_sfnt_data)
++  {
++    hb_blob_destroy (blob);
++    return NULL;
++  }
++
++  memcpy(new_sfnt_data, orig_sfnt_data, length);
++
++  OT::name &name = OT::StructAtOffset<OT::name> (new_sfnt_data, name_table_offset);
++  name.format.set (0);
++  name.count.set (ARRAY_LENGTH (name_IDs));
++  name.stringOffset.set (name.get_size());
++  for (unsigned int i = 0; i < ARRAY_LENGTH (name_IDs); i++)
++  {
++    OT::NameRecord &record = name.nameRecord[i];
++    record.platformID.set(3);
++    record.encodingID.set(1);
++    record.languageID.set(0x0409u); /* English */
++    record.nameID.set(name_IDs[i]);
++    record.length.set(name_str_len * 2);
++    record.offset.set(0);
++  }
++
++  /* Copy string data from new_name, converting wchar_t to UTF16BE. */
++  unsigned char *p = &OT::StructAfter<unsigned char>(name);
++  for (unsigned int i = 0; i < name_str_len; i++)
++  {
++    *p++ = new_name[i] >> 8;
++    *p++ = new_name[i] & 0xff;
++  }
++
++  /* Adjust name table entry to point to new name table */
++  const OT::OpenTypeFontFile &file = *(OT::OpenTypeFontFile *) (new_sfnt_data);
++  unsigned int face_count = file.get_face_count ();
++  for (unsigned int face_index = 0; face_index < face_count; face_index++)
++  {
++    /* Note: doing multiple edits (ie. TTC) can be unsafe.  There may be
++    * toe-stepping.  But we don't really care. */
++    const OT::OpenTypeFontFace &face = file.get_face (face_index);
++    unsigned int index;
++    if (face.find_table_index (HB_OT_TAG_name, &index))
++    {
++      OT::TableRecord &record = const_cast<OT::TableRecord &> (face.get_table (index));
++      record.checkSum.set_for_data (&name, name_table_length);
++      record.offset.set (name_table_offset);
++      record.length.set (name_table_length);
++    }
++    else if (face_index == 0) /* Fail if first face doesn't have 'name' table. */
++    {
++      free (new_sfnt_data);
++      hb_blob_destroy (blob);
++      return NULL;
++    }
++  }
++
++  /* The checkSumAdjustment field in the 'head' table is now wrong,
++  * but that doesn't actually seem to cause any problems so we don't
++  * bother. */
++
++  hb_blob_destroy (blob);
++  return hb_blob_create ((const char *)new_sfnt_data, new_length,
++    HB_MEMORY_MODE_WRITABLE, NULL, free);
++}
++
++hb_directwrite_shaper_face_data_t *
++_hb_directwrite_shaper_face_data_create(hb_face_t *face)
++{
++  hb_directwrite_shaper_face_data_t *data = (hb_directwrite_shaper_face_data_t *)calloc(1, sizeof (hb_directwrite_shaper_face_data_t));
++  if (unlikely (!data))
++    return NULL;
++
++  hb_blob_t *blob = hb_face_reference_blob (face);
++  if (unlikely (!hb_blob_get_length (blob)))
++    DEBUG_MSG(DIRECTWRITE, face, "Face has empty blob");
++
++  blob = _hb_rename_font (blob, data->face_name);
++  if (unlikely (!blob))
++  {
++    free(data);
++    return NULL;
++  }
++
++  DWORD num_fonts_installed;
++  data->fh = AddFontMemResourceEx ((void *)hb_blob_get_data(blob, NULL),
++    hb_blob_get_length (blob),
++    0, &num_fonts_installed);
++  if (unlikely (!data->fh))
++  {
++    DEBUG_MSG (DIRECTWRITE, face, "Face AddFontMemResourceEx() failed");
++    free (data);
++    return NULL;
++  }
++
++  return data;
++}
++
++void
++_hb_directwrite_shaper_face_data_destroy(hb_directwrite_shaper_face_data_t *data)
++{
++  RemoveFontMemResourceEx(data->fh);
++  free(data);
++}
++
++
++/*
++ * shaper font data
++ */
++
++struct hb_directwrite_shaper_font_data_t {
++  HDC hdc;
++  LOGFONTW log_font;
++  HFONT hfont;
++};
++
++static bool
++populate_log_font (LOGFONTW  *lf,
++       hb_font_t *font)
++{
++  memset (lf, 0, sizeof (*lf));
++  lf->lfHeight = -font->y_scale;
++  lf->lfCharSet = DEFAULT_CHARSET;
++
++  hb_face_t *face = font->face;
++  hb_directwrite_shaper_face_data_t *face_data = HB_SHAPER_DATA_GET (face);
++
++  memcpy (lf->lfFaceName, face_data->face_name, sizeof (lf->lfFaceName));
++
++  return true;
++}
++
++hb_directwrite_shaper_font_data_t *
++_hb_directwrite_shaper_font_data_create (hb_font_t *font)
++{
++  if (unlikely (!hb_directwrite_shaper_face_data_ensure (font->face))) return NULL;
++
++  hb_directwrite_shaper_font_data_t *data = (hb_directwrite_shaper_font_data_t *) calloc (1, sizeof (hb_directwrite_shaper_font_data_t));
++  if (unlikely (!data))
++    return NULL;
++
++  data->hdc = GetDC (NULL);
++
++  if (unlikely (!populate_log_font (&data->log_font, font))) {
++    DEBUG_MSG (DIRECTWRITE, font, "Font populate_log_font() failed");
++    _hb_directwrite_shaper_font_data_destroy (data);
++    return NULL;
++  }
++
++  data->hfont = CreateFontIndirectW (&data->log_font);
++  if (unlikely (!data->hfont)) {
++    DEBUG_MSG (DIRECTWRITE, font, "Font CreateFontIndirectW() failed");
++    _hb_directwrite_shaper_font_data_destroy (data);
++     return NULL;
++  }
++
++  if (!SelectObject (data->hdc, data->hfont)) {
++    DEBUG_MSG (DIRECTWRITE, font, "Font SelectObject() failed");
++    _hb_directwrite_shaper_font_data_destroy (data);
++     return NULL;
++  }
++
++  return data;
++}
++
++void
++_hb_directwrite_shaper_font_data_destroy (hb_directwrite_shaper_font_data_t *data)
++{
++  if (data->hdc)
++    ReleaseDC (NULL, data->hdc);
++  if (data->hfont)
++    DeleteObject (data->hfont);
++  free (data);
++}
++
++LOGFONTW *
++hb_directwrite_font_get_logfontw (hb_font_t *font)
++{
++  if (unlikely (!hb_directwrite_shaper_font_data_ensure (font))) return NULL;
++  hb_directwrite_shaper_font_data_t *font_data =  HB_SHAPER_DATA_GET (font);
++  return &font_data->log_font;
++}
++
++HFONT
++hb_directwrite_font_get_hfont (hb_font_t *font)
++{
++  if (unlikely (!hb_directwrite_shaper_font_data_ensure (font))) return NULL;
++  hb_directwrite_shaper_font_data_t *font_data =  HB_SHAPER_DATA_GET (font);
++  return font_data->hfont;
++}
++
++
++/*
++ * shaper shape_plan data
++ */
++
++struct hb_directwrite_shaper_shape_plan_data_t {};
++
++hb_directwrite_shaper_shape_plan_data_t *
++_hb_directwrite_shaper_shape_plan_data_create (hb_shape_plan_t    *shape_plan HB_UNUSED,
++               const hb_feature_t *user_features HB_UNUSED,
++               unsigned int        num_user_features HB_UNUSED)
++{
++  return (hb_directwrite_shaper_shape_plan_data_t *) HB_SHAPER_DATA_SUCCEEDED;
++}
++
++void
++_hb_directwrite_shaper_shape_plan_data_destroy (hb_directwrite_shaper_shape_plan_data_t *data HB_UNUSED)
++{
++}
++
++// Most of here TextAnalysis is originally written by Bas Schouten for Mozilla project
++// but now is relicensed to MIT for HarfBuzz use
++class TextAnalysis
++  : public IDWriteTextAnalysisSource, public IDWriteTextAnalysisSink
++{
++public:
++
++  IFACEMETHOD(QueryInterface)(IID const& iid, OUT void** ppObject) { return S_OK; }
++  IFACEMETHOD_(ULONG, AddRef)() { return 1; }
++  IFACEMETHOD_(ULONG, Release)() { return 1; }
++
++  // A single contiguous run of characters containing the same analysis 
++  // results.
++  struct Run
++  {
++    UINT32 mTextStart;   // starting text position of this run
++    UINT32 mTextLength;  // number of contiguous code units covered
++    UINT32 mGlyphStart;  // starting glyph in the glyphs array
++    UINT32 mGlyphCount;  // number of glyphs associated with this run of 
++    // text
++    DWRITE_SCRIPT_ANALYSIS mScript;
++    UINT8 mBidiLevel;
++    bool mIsSideways;
++
++    inline bool ContainsTextPosition(UINT32 aTextPosition) const
++    {
++      return aTextPosition >= mTextStart
++        && aTextPosition <  mTextStart + mTextLength;
++    }
++
++    Run *nextRun;
++  };
++
++public:
++  TextAnalysis(const wchar_t* text,
++    UINT32 textLength,
++    const wchar_t* localeName,
++    DWRITE_READING_DIRECTION readingDirection)
++    : mText(text)
++    , mTextLength(textLength)
++    , mLocaleName(localeName)
++    , mReadingDirection(readingDirection)
++    , mCurrentRun(NULL) { };
++
++  ~TextAnalysis() {
++    // delete runs, except mRunHead which is part of the TextAnalysis object
++    for (Run *run = mRunHead.nextRun; run;) {
++      Run *origRun = run;
++      run = run->nextRun;
++      delete origRun;
++    }
++  }
++
++  STDMETHODIMP GenerateResults(IDWriteTextAnalyzer* textAnalyzer,
++    Run **runHead) {
++    // Analyzes the text using the script analyzer and returns
++    // the result as a series of runs.
++
++    HRESULT hr = S_OK;
++
++    // Initially start out with one result that covers the entire range.
++    // This result will be subdivided by the analysis processes.
++    mRunHead.mTextStart = 0;
++    mRunHead.mTextLength = mTextLength;
++    mRunHead.mBidiLevel =
++      (mReadingDirection == DWRITE_READING_DIRECTION_RIGHT_TO_LEFT);
++    mRunHead.nextRun = NULL;
++    mCurrentRun = &mRunHead;
++
++    // Call each of the analyzers in sequence, recording their results.
++    if (SUCCEEDED(hr = textAnalyzer->AnalyzeScript(this,
++      0,
++      mTextLength,
++      this))) {
++      *runHead = &mRunHead;
++    }
++
++    return hr;
++  }
++
++  // IDWriteTextAnalysisSource implementation
++
++  IFACEMETHODIMP GetTextAtPosition(UINT32 textPosition,
++    OUT WCHAR const** textString,
++    OUT UINT32* textLength)
++  {
++    if (textPosition >= mTextLength) {
++      // No text at this position, valid query though.
++      *textString = NULL;
++      *textLength = 0;
++    }
++    else {
++      *textString = mText + textPosition;
++      *textLength = mTextLength - textPosition;
++    }
++    return S_OK;
++  }
++
++  IFACEMETHODIMP GetTextBeforePosition(UINT32 textPosition,
++    OUT WCHAR const** textString,
++    OUT UINT32* textLength)
++  {
++    if (textPosition == 0 || textPosition > mTextLength) {
++      // Either there is no text before here (== 0), or this
++      // is an invalid position. The query is considered valid thouh.
++      *textString = NULL;
++      *textLength = 0;
++    }
++    else {
++      *textString = mText;
++      *textLength = textPosition;
++    }
++    return S_OK;
++  }
++
++  IFACEMETHODIMP_(DWRITE_READING_DIRECTION)
++    GetParagraphReadingDirection() { return mReadingDirection; }
++
++  IFACEMETHODIMP GetLocaleName(UINT32 textPosition,
++    UINT32* textLength,
++    WCHAR const** localeName) {
++    return S_OK;
++  }
++
++  IFACEMETHODIMP
++    GetNumberSubstitution(UINT32 textPosition,
++    OUT UINT32* textLength,
++    OUT IDWriteNumberSubstitution** numberSubstitution)
++  {
++    // We do not support number substitution.
++    *numberSubstitution = NULL;
++    *textLength = mTextLength - textPosition;
++
++    return S_OK;
++  }
++
++  // IDWriteTextAnalysisSink implementation
++
++  IFACEMETHODIMP
++    SetScriptAnalysis(UINT32 textPosition,
++    UINT32 textLength,
++    DWRITE_SCRIPT_ANALYSIS const* scriptAnalysis)
++  {
++    SetCurrentRun(textPosition);
++    SplitCurrentRun(textPosition);
++    while (textLength > 0) {
++      Run *run = FetchNextRun(&textLength);
++      run->mScript = *scriptAnalysis;
++    }
++
++    return S_OK;
++  }
++
++  IFACEMETHODIMP
++    SetLineBreakpoints(UINT32 textPosition,
++    UINT32 textLength,
++    const DWRITE_LINE_BREAKPOINT* lineBreakpoints) { return S_OK; }
++
++  IFACEMETHODIMP SetBidiLevel(UINT32 textPosition,
++    UINT32 textLength,
++    UINT8 explicitLevel,
++    UINT8 resolvedLevel) { return S_OK; }
++
++  IFACEMETHODIMP
++    SetNumberSubstitution(UINT32 textPosition,
++    UINT32 textLength,
++    IDWriteNumberSubstitution* numberSubstitution) { return S_OK; }
++
++protected:
++  Run *FetchNextRun(IN OUT UINT32* textLength)
++  {
++    // Used by the sink setters, this returns a reference to the next run.
++    // Position and length are adjusted to now point after the current run
++    // being returned.
++
++    Run *origRun = mCurrentRun;
++    // Split the tail if needed (the length remaining is less than the
++    // current run's size).
++    if (*textLength < mCurrentRun->mTextLength) {
++      SplitCurrentRun(mCurrentRun->mTextStart + *textLength);
++    }
++    else {
++      // Just advance the current run.
++      mCurrentRun = mCurrentRun->nextRun;
++    }
++    *textLength -= origRun->mTextLength;
++
++    // Return a reference to the run that was just current.
++    return origRun;
++  }
++
++  void SetCurrentRun(UINT32 textPosition)
++  {
++    // Move the current run to the given position.
++    // Since the analyzers generally return results in a forward manner,
++    // this will usually just return early. If not, find the
++    // corresponding run for the text position.
++
++    if (mCurrentRun && mCurrentRun->ContainsTextPosition(textPosition)) {
++      return;
++    }
++
++    for (Run *run = &mRunHead; run; run = run->nextRun) {
++      if (run->ContainsTextPosition(textPosition)) {
++        mCurrentRun = run;
++        return;
++      }
++    }
++    //NS_NOTREACHED("We should always be able to find the text position in one \
++            //                of our runs");
++  }
++
++  void SplitCurrentRun(UINT32 splitPosition)
++  {
++    if (!mCurrentRun) {
++      //NS_ASSERTION(false, "SplitCurrentRun called without current run.");
++      // Shouldn't be calling this when no current run is set!
++      return;
++    }
++    // Split the current run.
++    if (splitPosition <= mCurrentRun->mTextStart) {
++      // No need to split, already the start of a run
++      // or before it. Usually the first.
++      return;
++    }
++    Run *newRun = new Run;
++
++    *newRun = *mCurrentRun;
++
++    // Insert the new run in our linked list.
++    newRun->nextRun = mCurrentRun->nextRun;
++    mCurrentRun->nextRun = newRun;
++
++    // Adjust runs' text positions and lengths.
++    UINT32 splitPoint = splitPosition - mCurrentRun->mTextStart;
++    newRun->mTextStart += splitPoint;
++    newRun->mTextLength -= splitPoint;
++    mCurrentRun->mTextLength = splitPoint;
++    mCurrentRun = newRun;
++  }
++
++protected:
++  // Input
++  // (weak references are fine here, since this class is a transient
++  //  stack-based helper that doesn't need to copy data)
++  UINT32 mTextLength;
++  const WCHAR* mText;
++  const WCHAR* mLocaleName;
++  DWRITE_READING_DIRECTION mReadingDirection;
++
++  // Current processing state.
++  Run *mCurrentRun;
++
++  // Output is a list of runs starting here
++  Run  mRunHead;
++};
++
++
++/*
++ * shaper
++ */
++
++hb_bool_t
++_hb_directwrite_shape(hb_shape_plan_t    *shape_plan,
++  hb_font_t          *font,
++  hb_buffer_t        *buffer,
++  const hb_feature_t *features,
++  unsigned int        num_features)
++{
++  hb_face_t *face = font->face;
++  hb_directwrite_shaper_face_data_t *face_data = HB_SHAPER_DATA_GET (face);
++  hb_directwrite_shaper_font_data_t *font_data = HB_SHAPER_DATA_GET (font);
++
++  // factory probably should be cached
++  IDWriteFactory* dwriteFactory;
++  DWriteCreateFactory(
++    DWRITE_FACTORY_TYPE_SHARED,
++    __uuidof(IDWriteFactory),
++    reinterpret_cast<IUnknown**>(&dwriteFactory)
++    );
++
++  IDWriteGdiInterop *gdiInterop;
++  dwriteFactory->GetGdiInterop (&gdiInterop);
++  IDWriteFontFace* fontFace;
++  gdiInterop->CreateFontFaceFromHdc (font_data->hdc, &fontFace);
++
++  IDWriteTextAnalyzer* analyzer;
++  dwriteFactory->CreateTextAnalyzer (&analyzer);
++
++  unsigned int scratch_size;
++  hb_buffer_t::scratch_buffer_t *scratch = buffer->get_scratch_buffer (&scratch_size);
++#define ALLOCATE_ARRAY(Type, name, len) \
++  Type *name = (Type *) scratch; \
++  { \
++    unsigned int _consumed = DIV_CEIL ((len) * sizeof (Type), sizeof (*scratch)); \
++    assert (_consumed <= scratch_size); \
++    scratch += _consumed; \
++    scratch_size -= _consumed; \
++  }
++
++#define utf16_index() var1.u32
++
++  ALLOCATE_ARRAY(WCHAR, pchars, buffer->len * 2);
++
++  unsigned int chars_len = 0;
++  for (unsigned int i = 0; i < buffer->len; i++)
++  {
++    hb_codepoint_t c = buffer->info[i].codepoint;
++    buffer->info[i].utf16_index() = chars_len;
++    if (likely(c <= 0xFFFFu))
++      pchars[chars_len++] = c;
++    else if (unlikely(c > 0x10FFFFu))
++      pchars[chars_len++] = 0xFFFDu;
++    else {
++      pchars[chars_len++] = 0xD800u + ((c - 0x10000u) >> 10);
++      pchars[chars_len++] = 0xDC00u + ((c - 0x10000u) & ((1 << 10) - 1));
++    }
++  }
++
++  ALLOCATE_ARRAY(WORD, log_clusters, chars_len);
++  if (num_features)
++  {
++    /* Need log_clusters to assign features. */
++    chars_len = 0;
++    for (unsigned int i = 0; i < buffer->len; i++)
++    {
++      hb_codepoint_t c = buffer->info[i].codepoint;
++      unsigned int cluster = buffer->info[i].cluster;
++      log_clusters[chars_len++] = cluster;
++      if (hb_in_range(c, 0x10000u, 0x10FFFFu))
++        log_clusters[chars_len++] = cluster; /* Surrogates. */
++    }
++  }
++
++  HRESULT hr;
++  // TODO: Handle TEST_DISABLE_OPTIONAL_LIGATURES
++
++  DWRITE_READING_DIRECTION readingDirection = buffer->props.direction ? 
++    DWRITE_READING_DIRECTION_RIGHT_TO_LEFT :
++    DWRITE_READING_DIRECTION_LEFT_TO_RIGHT;
++
++  /*
++  * There's an internal 16-bit limit on some things inside the analyzer,
++  * but we never attempt to shape a word longer than 64K characters
++  * in a single gfxShapedWord, so we cannot exceed that limit.
++  */
++  UINT32 length = buffer->len;
++
++  TextAnalysis analysis(pchars, length, NULL, readingDirection);
++  TextAnalysis::Run *runHead;
++  hr = analysis.GenerateResults(analyzer, &runHead);
++
++  if (FAILED(hr)) {
++    //NS_WARNING("Analyzer failed to generate results.");
++    return false;
++  }
++
++  UINT32 maxGlyphs = 3 * length / 2 + 16;
++
++#define INITIAL_GLYPH_SIZE 400
++  UINT16* clusters = (UINT16*)malloc(INITIAL_GLYPH_SIZE * sizeof(UINT16));
++  UINT16* glyphs = (UINT16*)malloc(INITIAL_GLYPH_SIZE * sizeof(UINT16));
++  DWRITE_SHAPING_TEXT_PROPERTIES* textProperties = (DWRITE_SHAPING_TEXT_PROPERTIES*)
++    malloc(INITIAL_GLYPH_SIZE * sizeof(DWRITE_SHAPING_TEXT_PROPERTIES));
++  DWRITE_SHAPING_GLYPH_PROPERTIES* glyphProperties = (DWRITE_SHAPING_GLYPH_PROPERTIES*)
++    malloc(INITIAL_GLYPH_SIZE * sizeof(DWRITE_SHAPING_GLYPH_PROPERTIES));
++
++  UINT32 actualGlyphs;
++
++  bool backward = HB_DIRECTION_IS_BACKWARD(buffer->props.direction);
++
++  wchar_t lang[4];
++  mbstowcs(lang, hb_language_to_string(buffer->props.language), 4);
++  hr = analyzer->GetGlyphs(pchars, length,
++    fontFace, FALSE,
++    buffer->props.direction,
++    &runHead->mScript, (const wchar_t*)lang, NULL, NULL, NULL, 0,
++    maxGlyphs, clusters, textProperties,
++    glyphs, glyphProperties, &actualGlyphs);
++
++  if (hr == HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER)) {
++    free(clusters);
++    free(glyphs);
++    free(textProperties);
++    free(glyphProperties);
++
++    clusters = (UINT16*)malloc(INITIAL_GLYPH_SIZE * sizeof(UINT16));
++    glyphs = (UINT16*)malloc(INITIAL_GLYPH_SIZE * sizeof(UINT16));
++    textProperties = (DWRITE_SHAPING_TEXT_PROPERTIES*)
++      malloc(INITIAL_GLYPH_SIZE * sizeof(DWRITE_SHAPING_TEXT_PROPERTIES));
++    glyphProperties = (DWRITE_SHAPING_GLYPH_PROPERTIES*)
++      malloc(INITIAL_GLYPH_SIZE * sizeof(DWRITE_SHAPING_GLYPH_PROPERTIES));
++
++    hr = analyzer->GetGlyphs(pchars, length,
++      fontFace, FALSE,
++      buffer->props.direction,
++      &runHead->mScript, (const wchar_t*)lang, NULL, NULL, NULL, 0,
++      maxGlyphs, clusters, textProperties,
++      glyphs, glyphProperties, &actualGlyphs);
++  }
++  if (FAILED(hr)) {
++    //NS_WARNING("Analyzer failed to get glyphs.");
++    return false;
++  }
++
++  FLOAT advances[400];
++  DWRITE_GLYPH_OFFSET offsets[400];
++
++
++  /* The -2 in the following is to compensate for possible
++   * alignment needed after the WORD array.  sizeof(WORD) == 2. */
++  unsigned int glyphs_size = (scratch_size * sizeof (int)-2)
++    / (sizeof (WORD) +
++    4 + // sizeof (SCRIPT_GLYPHPROP) +
++    sizeof (int) +
++    8 + // sizeof (GOFFSET) +
++    sizeof (uint32_t));
++  ALLOCATE_ARRAY(uint32_t, vis_clusters, glyphs_size);
++
++#undef ALLOCATE_ARRAY
++
++  hr = analyzer->GetGlyphPlacements(pchars,
++    clusters,
++    textProperties,
++    length,
++    glyphs,
++    glyphProperties,
++    actualGlyphs,
++    fontFace,
++    face->get_upem(),
++    FALSE,
++    FALSE,
++    &runHead->mScript,
++    NULL,
++    NULL,
++    NULL,
++    0,
++    advances,
++    offsets);
++
++  if (FAILED(hr)) {
++    //NS_WARNING("Analyzer failed to get glyph placements.");
++    return false;
++  }
++
++  unsigned int glyphs_len = actualGlyphs;
++
++  /* Ok, we've got everything we need, now compose output buffer,
++   * very, *very*, carefully! */
++
++  /* Calculate visual-clusters.  That's what we ship. */
++  for (unsigned int i = 0; i < glyphs_len; i++)
++    vis_clusters[i] = -1;
++  for (unsigned int i = 0; i < buffer->len; i++) {
++    uint32_t *p = &vis_clusters[log_clusters[buffer->info[i].utf16_index()]];
++    //*p = MIN (*p, buffer->info[i].cluster);
++  }
++  for (unsigned int i = 1; i < glyphs_len; i++)
++    if (vis_clusters[i] == -1)
++      vis_clusters[i] = vis_clusters[i - 1];
++
++#undef utf16_index
++
++  //if (unlikely (!buffer->ensure (glyphs_len)))
++  //  FAIL ("Buffer in error");
++
++#undef FAIL
++
++  /* Set glyph infos */
++  buffer->len = 0;
++  for (unsigned int i = 0; i < glyphs_len; i++)
++  {
++    hb_glyph_info_t *info = &buffer->info[buffer->len++];
++
++    info->codepoint = glyphs[i];
++    info->cluster = vis_clusters[i];
++
++    /* The rest is crap.  Let's store position info there for now. */
++    info->mask = advances[i];
++    info->var1.u32 = offsets[i].ascenderOffset;
++    info->var2.u32 = -offsets[i].advanceOffset;
++  }
++
++  free(clusters);
++  free(glyphs);
++  free(textProperties);
++  free(glyphProperties);
++
++  /* Set glyph positions */
++  buffer->clear_positions ();
++  for (unsigned int i = 0; i < glyphs_len; i++)
++  {
++    hb_glyph_info_t *info = &buffer->info[i];
++    hb_glyph_position_t *pos = &buffer->pos[i];
++
++    /* TODO vertical */
++    pos->x_advance = info->mask;
++    pos->x_offset = backward ? -info->var1.u32 : info->var1.u32;
++    pos->y_offset = info->var2.u32;
++  }
++
++  if (backward)
++    hb_buffer_reverse (buffer);
++
++  /* Wow, done! */
++  return true;
++}
+diff --git a/gfx/harfbuzz/src/hb-directwrite.h b/gfx/harfbuzz/src/hb-directwrite.h
+new file mode 100644
+--- /dev/null
++++ b/gfx/harfbuzz/src/hb-directwrite.h
+@@ -0,0 +1,34 @@
++/*
++ * Copyright © 2015  Ebrahim Byagowi
++ *
++ *  This is part of HarfBuzz, a text shaping library.
++ *
++ * Permission is hereby granted, without written agreement and without
++ * license or royalty fees, to use, copy, modify, and distribute this
++ * software and its documentation for any purpose, provided that the
++ * above copyright notice and the following two paragraphs appear in
++ * all copies of this software.
++ *
++ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
++ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
++ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
++ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ *
++ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
++ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
++ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
++ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
++ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
++ */
++
++#ifndef HB_DIRECTWRITE_H
++#define HB_DIRECTWRITE_H
++
++#include "hb.h"
++
++HB_BEGIN_DECLS
++
++HB_END_DECLS
++
++#endif /* HB_UNISCRIBE_H */
+diff --git a/gfx/harfbuzz/src/hb-face.h b/gfx/harfbuzz/src/hb-face.h
+--- a/gfx/harfbuzz/src/hb-face.h
++++ b/gfx/harfbuzz/src/hb-face.h
+@@ -38,80 +38,80 @@ HB_BEGIN_DECLS
+ 
+ 
+ /*
+  * hb_face_t
+  */
+ 
+ typedef struct hb_face_t hb_face_t;
+ 
+-hb_face_t *
++HB_EXTERN hb_face_t *
+ hb_face_create (hb_blob_t    *blob,
+ 		unsigned int  index);
+ 
+ typedef hb_blob_t * (*hb_reference_table_func_t)  (hb_face_t *face, hb_tag_t tag, void *user_data);
+ 
+ /* calls destroy() when not needing user_data anymore */
+-hb_face_t *
++HB_EXTERN hb_face_t *
+ hb_face_create_for_tables (hb_reference_table_func_t  reference_table_func,
+ 			   void                      *user_data,
+ 			   hb_destroy_func_t          destroy);
+ 
+-hb_face_t *
++HB_EXTERN hb_face_t *
+ hb_face_get_empty (void);
+ 
+-hb_face_t *
++HB_EXTERN hb_face_t *
+ hb_face_reference (hb_face_t *face);
+ 
+-void
++HB_EXTERN void
+ hb_face_destroy (hb_face_t *face);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_face_set_user_data (hb_face_t          *face,
+ 		       hb_user_data_key_t *key,
+ 		       void *              data,
+ 		       hb_destroy_func_t   destroy,
+ 		       hb_bool_t           replace);
+ 
+ 
+-void *
++HB_EXTERN void *
+ hb_face_get_user_data (hb_face_t          *face,
+ 		       hb_user_data_key_t *key);
+ 
+-void
++HB_EXTERN void
+ hb_face_make_immutable (hb_face_t *face);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_face_is_immutable (hb_face_t *face);
+ 
+ 
+-hb_blob_t *
++HB_EXTERN hb_blob_t *
+ hb_face_reference_table (hb_face_t *face,
+ 			 hb_tag_t   tag);
+ 
+-hb_blob_t *
++HB_EXTERN hb_blob_t *
+ hb_face_reference_blob (hb_face_t *face);
+ 
+-void
++HB_EXTERN void
+ hb_face_set_index (hb_face_t    *face,
+ 		   unsigned int  index);
+ 
+-unsigned int
++HB_EXTERN unsigned int
+ hb_face_get_index (hb_face_t    *face);
+ 
+-void
++HB_EXTERN void
+ hb_face_set_upem (hb_face_t    *face,
+ 		  unsigned int  upem);
+ 
+-unsigned int
++HB_EXTERN unsigned int
+ hb_face_get_upem (hb_face_t *face);
+ 
+-void
++HB_EXTERN void
+ hb_face_set_glyph_count (hb_face_t    *face,
+ 			 unsigned int  glyph_count);
+ 
+-unsigned int
++HB_EXTERN unsigned int
+ hb_face_get_glyph_count (hb_face_t *face);
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_FACE_H */
+diff --git a/gfx/harfbuzz/src/hb-fallback-shape.cc b/gfx/harfbuzz/src/hb-fallback-shape.cc
+--- a/gfx/harfbuzz/src/hb-fallback-shape.cc
++++ b/gfx/harfbuzz/src/hb-fallback-shape.cc
+@@ -101,17 +101,17 @@ hb_bool_t
+    * - Handle Variation Selectors?
+    * - Apply normalization?
+    *
+    * This will make the fallback shaper into a dumb "TrueType"
+    * shaper which many people unfortunately still request.
+    */
+ 
+   hb_codepoint_t space;
+-  bool has_space = font->get_glyph (' ', 0, &space);
++  bool has_space = (bool) font->get_glyph (' ', 0, &space);
+ 
+   buffer->clear_positions ();
+ 
+   hb_direction_t direction = buffer->props.direction;
+   hb_unicode_funcs_t *unicode = buffer->unicode;
+   unsigned int count = buffer->len;
+   hb_glyph_info_t *info = buffer->info;
+   hb_glyph_position_t *pos = buffer->pos;
+diff --git a/gfx/harfbuzz/src/hb-font-private.hh b/gfx/harfbuzz/src/hb-font-private.hh
+--- a/gfx/harfbuzz/src/hb-font-private.hh
++++ b/gfx/harfbuzz/src/hb-font-private.hh
+@@ -37,16 +37,18 @@
+ 
+ 
+ 
+ /*
+  * hb_font_funcs_t
+  */
+ 
+ #define HB_FONT_FUNCS_IMPLEMENT_CALLBACKS \
++  HB_FONT_FUNC_IMPLEMENT (font_h_extents) \
++  HB_FONT_FUNC_IMPLEMENT (font_v_extents) \
+   HB_FONT_FUNC_IMPLEMENT (glyph) \
+   HB_FONT_FUNC_IMPLEMENT (glyph_h_advance) \
+   HB_FONT_FUNC_IMPLEMENT (glyph_v_advance) \
+   HB_FONT_FUNC_IMPLEMENT (glyph_h_origin) \
+   HB_FONT_FUNC_IMPLEMENT (glyph_v_origin) \
+   HB_FONT_FUNC_IMPLEMENT (glyph_h_kerning) \
+   HB_FONT_FUNC_IMPLEMENT (glyph_v_kerning) \
+   HB_FONT_FUNC_IMPLEMENT (glyph_extents) \
+@@ -75,17 +77,17 @@ struct hb_font_funcs_t {
+ 
+   /* Don't access these directly.  Call font->get_*() instead. */
+   union get_t {
+     struct get_funcs_t {
+ #define HB_FONT_FUNC_IMPLEMENT(name) hb_font_get_##name##_func_t name;
+       HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
+ #undef HB_FONT_FUNC_IMPLEMENT
+     } f;
+-    void (*array[]) (void);
++    void (*array[VAR]) (void);
+   } get;
+ };
+ 
+ 
+ 
+ /*
+  * hb_font_t
+  */
+@@ -155,17 +157,32 @@ struct hb_font_t {
+   { \
+     hb_font_funcs_t *funcs = this->klass; \
+     unsigned int i = offsetof (hb_font_funcs_t::get_t::get_funcs_t, name) / sizeof (funcs->get.array[0]); \
+     return has_func (i); \
+   }
+   HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
+ #undef HB_FONT_FUNC_IMPLEMENT
+ 
+-  inline hb_bool_t has_glyph (hb_codepoint_t unicode)
++  inline hb_bool_t get_font_h_extents (hb_font_extents_t *extents)
++  {
++    memset (extents, 0, sizeof (*extents));
++    return klass->get.f.font_h_extents (this, user_data,
++					extents,
++					klass->user_data.font_h_extents);
++  }
++  inline hb_bool_t get_font_v_extents (hb_font_extents_t *extents)
++  {
++    memset (extents, 0, sizeof (*extents));
++    return klass->get.f.font_v_extents (this, user_data,
++					extents,
++					klass->user_data.font_v_extents);
++  }
++
++  inline bool has_glyph (hb_codepoint_t unicode)
+   {
+     hb_codepoint_t glyph;
+     return get_glyph (unicode, 0, &glyph);
+   }
+ 
+   inline hb_bool_t get_glyph (hb_codepoint_t unicode, hb_codepoint_t variation_selector,
+ 			      hb_codepoint_t *glyph)
+   {
+@@ -260,16 +277,36 @@ struct hb_font_t {
+ 					 name, len,
+ 					 glyph,
+ 					 klass->user_data.glyph_from_name);
+   }
+ 
+ 
+   /* A bit higher-level, and with fallback */
+ 
++  inline void get_extents_for_direction (hb_direction_t direction,
++					 hb_font_extents_t *extents)
++  {
++    if (likely (HB_DIRECTION_IS_HORIZONTAL (direction))) {
++      if (!get_font_h_extents (extents))
++      {
++	extents->ascender = y_scale * .8;
++	extents->descender = y_scale - extents->ascender;
++	extents->line_gap = 0;
++      }
++    } else {
++      if (!get_font_v_extents (extents))
++      {
++	extents->ascender = x_scale / 2;
++	extents->descender = x_scale - extents->ascender;
++	extents->line_gap = 0;
++      }
++    }
++  }
++
+   inline void get_glyph_advance_for_direction (hb_codepoint_t glyph,
+ 					       hb_direction_t direction,
+ 					       hb_position_t *x, hb_position_t *y)
+   {
+     if (likely (HB_DIRECTION_IS_HORIZONTAL (direction))) {
+       *x = get_glyph_h_advance (glyph);
+       *y = 0;
+     } else {
+@@ -279,17 +316,17 @@ struct hb_font_t {
+   }
+ 
+   /* Internal only */
+   inline void guess_v_origin_minus_h_origin (hb_codepoint_t glyph,
+ 					     hb_position_t *x, hb_position_t *y)
+   {
+     *x = get_glyph_h_advance (glyph) / 2;
+ 
+-    /* TODO use font_metrics.ascent */
++    /* TODO use font_extents.ascender */
+     *y = y_scale;
+   }
+ 
+   inline void get_glyph_origin_for_direction (hb_codepoint_t glyph,
+ 					      hb_direction_t direction,
+ 					      hb_position_t *x, hb_position_t *y)
+   {
+     if (likely (HB_DIRECTION_IS_HORIZONTAL (direction)))
+diff --git a/gfx/harfbuzz/src/hb-font.cc b/gfx/harfbuzz/src/hb-font.cc
+--- a/gfx/harfbuzz/src/hb-font.cc
++++ b/gfx/harfbuzz/src/hb-font.cc
+@@ -40,16 +40,64 @@
+ #include <string.h>
+ 
+ 
+ /*
+  * hb_font_funcs_t
+  */
+ 
+ static hb_bool_t
++hb_font_get_font_h_extents_nil (hb_font_t *font,
++				void *font_data HB_UNUSED,
++				hb_font_extents_t *metrics,
++				void *user_data HB_UNUSED)
++{
++  memset (metrics, 0, sizeof (*metrics));
++  return false;
++}
++static hb_bool_t
++hb_font_get_font_h_extents_parent (hb_font_t *font,
++				   void *font_data HB_UNUSED,
++				   hb_font_extents_t *metrics,
++				   void *user_data HB_UNUSED)
++{
++  hb_bool_t ret = font->parent->get_font_h_extents (metrics);
++  if (ret) {
++    metrics->ascender = font->parent_scale_y_distance (metrics->ascender);
++    metrics->descender = font->parent_scale_y_distance (metrics->descender);
++    metrics->line_gap = font->parent_scale_y_distance (metrics->line_gap);
++  }
++  return ret;
++}
++
++static hb_bool_t
++hb_font_get_font_v_extents_nil (hb_font_t *font,
++				void *font_data HB_UNUSED,
++				hb_font_extents_t *metrics,
++				void *user_data HB_UNUSED)
++{
++  memset (metrics, 0, sizeof (*metrics));
++  return false;
++}
++static hb_bool_t
++hb_font_get_font_v_extents_parent (hb_font_t *font,
++				   void *font_data HB_UNUSED,
++				   hb_font_extents_t *metrics,
++				   void *user_data HB_UNUSED)
++{
++  hb_bool_t ret = font->parent->get_font_v_extents (metrics);
++  if (ret) {
++    metrics->ascender = font->parent_scale_x_distance (metrics->ascender);
++    metrics->descender = font->parent_scale_x_distance (metrics->descender);
++    metrics->line_gap = font->parent_scale_x_distance (metrics->line_gap);
++  }
++  return ret;
++}
++
++static hb_bool_t
+ hb_font_get_glyph_nil (hb_font_t *font HB_UNUSED,
+ 		       void *font_data HB_UNUSED,
+ 		       hb_codepoint_t unicode,
+ 		       hb_codepoint_t variation_selector,
+ 		       hb_codepoint_t *glyph,
+ 		       void *user_data HB_UNUSED)
+ {
+   *glyph = 0;
+@@ -104,17 +152,17 @@ static hb_bool_t
+ hb_font_get_glyph_h_origin_nil (hb_font_t *font HB_UNUSED,
+ 				void *font_data HB_UNUSED,
+ 				hb_codepoint_t glyph,
+ 				hb_position_t *x,
+ 				hb_position_t *y,
+ 				void *user_data HB_UNUSED)
+ {
+   *x = *y = 0;
+-  return false;
++  return true;
+ }
+ static hb_bool_t
+ hb_font_get_glyph_h_origin_parent (hb_font_t *font,
+ 				   void *font_data HB_UNUSED,
+ 				   hb_codepoint_t glyph,
+ 				   hb_position_t *x,
+ 				   hb_position_t *y,
+ 				   void *user_data HB_UNUSED)
+@@ -275,17 +323,16 @@ hb_font_get_glyph_from_name_parent (hb_f
+ 				    void *font_data HB_UNUSED,
+ 				    const char *name, int len, /* -1 means nul-terminated */
+ 				    hb_codepoint_t *glyph,
+ 				    void *user_data HB_UNUSED)
+ {
+   return font->parent->get_glyph_from_name (name, len, glyph);
+ }
+ 
+-
+ static const hb_font_funcs_t _hb_font_funcs_nil = {
+   HB_OBJECT_HEADER_STATIC,
+ 
+   true, /* immutable */
+ 
+   {
+ #define HB_FONT_FUNC_IMPLEMENT(name) NULL,
+     HB_FONT_FUNCS_IMPLEMENT_CALLBACKS
+@@ -517,16 +564,52 @@ hb_font_t::has_func (unsigned int i)
+   if (parent && parent != hb_font_get_empty () && parent->has_func (i))
+     return true;
+   return this->klass->get.array[i] != _hb_font_funcs_parent.get.array[i];
+ }
+ 
+ /* Public getters */
+ 
+ /**
++ * hb_font_get_h_extents:
++ * @font: a font.
++ * @extents: (out):
++ *
++ *
++ *
++ * Return value:
++ *
++ * Since: 1.1.3
++ **/
++hb_bool_t
++hb_font_get_h_extents (hb_font_t *font,
++		       hb_font_extents_t *extents)
++{
++  return font->get_font_h_extents (extents);
++}
++
++/**
++ * hb_font_get_v_extents:
++ * @font: a font.
++ * @extents: (out):
++ *
++ *
++ *
++ * Return value:
++ *
++ * Since: 1.1.3
++ **/
++hb_bool_t
++hb_font_get_v_extents (hb_font_t *font,
++		       hb_font_extents_t *extents)
++{
++  return font->get_font_v_extents (extents);
++}
++
++/**
+  * hb_font_get_glyph:
+  * @font: a font.
+  * @unicode: 
+  * @variation_selector: 
+  * @glyph: (out): 
+  *
+  * 
+  *
+@@ -741,16 +824,33 @@ hb_font_get_glyph_from_name (hb_font_t *
+ {
+   return font->get_glyph_from_name (name, len, glyph);
+ }
+ 
+ 
+ /* A bit higher-level, and with fallback */
+ 
+ /**
++ * hb_font_get_extents_for_direction:
++ * @font: a font.
++ * @direction:
++ * @extents:
++ *
++ *
++ *
++ * Since: 1.1.3
++ **/
++void
++hb_font_get_extents_for_direction (hb_font_t *font,
++				   hb_direction_t direction,
++				   hb_font_extents_t *extents)
++{
++  return font->get_extents_for_direction (direction, extents);
++}
++/**
+  * hb_font_get_glyph_advance_for_direction:
+  * @font: a font.
+  * @glyph: 
+  * @direction: 
+  * @x: (out): 
+  * @y: (out): 
+  *
+  * 
+diff --git a/gfx/harfbuzz/src/hb-font.h b/gfx/harfbuzz/src/hb-font.h
+--- a/gfx/harfbuzz/src/hb-font.h
++++ b/gfx/harfbuzz/src/hb-font.h
+@@ -41,61 +41,85 @@ typedef struct hb_font_t hb_font_t;
+ 
+ 
+ /*
+  * hb_font_funcs_t
+  */
+ 
+ typedef struct hb_font_funcs_t hb_font_funcs_t;
+ 
+-hb_font_funcs_t *
++HB_EXTERN hb_font_funcs_t *
+ hb_font_funcs_create (void);
+ 
+-hb_font_funcs_t *
++HB_EXTERN hb_font_funcs_t *
+ hb_font_funcs_get_empty (void);
+ 
+-hb_font_funcs_t *
++HB_EXTERN hb_font_funcs_t *
+ hb_font_funcs_reference (hb_font_funcs_t *ffuncs);
+ 
+-void
++HB_EXTERN void
+ hb_font_funcs_destroy (hb_font_funcs_t *ffuncs);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_font_funcs_set_user_data (hb_font_funcs_t    *ffuncs,
+ 			     hb_user_data_key_t *key,
+ 			     void *              data,
+ 			     hb_destroy_func_t   destroy,
+ 			     hb_bool_t           replace);
+ 
+ 
+-void *
++HB_EXTERN void *
+ hb_font_funcs_get_user_data (hb_font_funcs_t    *ffuncs,
+ 			     hb_user_data_key_t *key);
+ 
+ 
+-void
++HB_EXTERN void
+ hb_font_funcs_make_immutable (hb_font_funcs_t *ffuncs);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_font_funcs_is_immutable (hb_font_funcs_t *ffuncs);
+ 
+ 
+-/* glyph extents */
++/* font and glyph extents */
++
++/* Note that typically ascender is positive and descender negative in coordinate systems that grow up. */
++typedef struct hb_font_extents_t
++{
++  hb_position_t ascender; /* typographic ascender. */
++  hb_position_t descender; /* typographic descender. */
++  hb_position_t line_gap; /* suggested line spacing gap. */
++  /*< private >*/
++  hb_position_t reserved9;
++  hb_position_t reserved8;
++  hb_position_t reserved7;
++  hb_position_t reserved6;
++  hb_position_t reserved5;
++  hb_position_t reserved4;
++  hb_position_t reserved3;
++  hb_position_t reserved2;
++  hb_position_t reserved1;
++} hb_font_extents_t;
+ 
+ /* Note that height is negative in coordinate systems that grow up. */
+ typedef struct hb_glyph_extents_t
+ {
+   hb_position_t x_bearing; /* left side of glyph from origin. */
+   hb_position_t y_bearing; /* top side of glyph from origin. */
+   hb_position_t width; /* distance from left to right side. */
+   hb_position_t height; /* distance from top to bottom side. */
+ } hb_glyph_extents_t;
+ 
++/* func types */
+ 
+-/* func types */
++typedef hb_bool_t (*hb_font_get_font_extents_func_t) (hb_font_t *font, void *font_data,
++						       hb_font_extents_t *metrics,
++						       void *user_data);
++typedef hb_font_get_font_extents_func_t hb_font_get_font_h_extents_func_t;
++typedef hb_font_get_font_extents_func_t hb_font_get_font_v_extents_func_t;
++
+ 
+ typedef hb_bool_t (*hb_font_get_glyph_func_t) (hb_font_t *font, void *font_data,
+ 					       hb_codepoint_t unicode, hb_codepoint_t variation_selector,
+ 					       hb_codepoint_t *glyph,
+ 					       void *user_data);
+ 
+ 
+ typedef hb_position_t (*hb_font_get_glyph_advance_func_t) (hb_font_t *font, void *font_data,
+@@ -136,377 +160,419 @@ typedef hb_bool_t (*hb_font_get_glyph_fr
+ 							 const char *name, int len, /* -1 means nul-terminated */
+ 							 hb_codepoint_t *glyph,
+ 							 void *user_data);
+ 
+ 
+ /* func setters */
+ 
+ /**
++ * hb_font_funcs_set_font_h_extents_func:
++ * @ffuncs: font functions.
++ * @func: (closure user_data) (destroy destroy) (scope notified):
++ * @user_data:
++ * @destroy:
++ *
++ *
++ *
++ * Since: 1.1.2
++ **/
++HB_EXTERN void
++hb_font_funcs_set_font_h_extents_func (hb_font_funcs_t *ffuncs,
++				       hb_font_get_font_h_extents_func_t func,
++				       void *user_data, hb_destroy_func_t destroy);
++
++/**
++ * hb_font_funcs_set_font_v_extents_func:
++ * @ffuncs: font functions.
++ * @func: (closure user_data) (destroy destroy) (scope notified):
++ * @user_data:
++ * @destroy:
++ *
++ *
++ *
++ * Since: 1.1.2
++ **/
++HB_EXTERN void
++hb_font_funcs_set_font_v_extents_func (hb_font_funcs_t *ffuncs,
++				       hb_font_get_font_v_extents_func_t func,
++				       void *user_data, hb_destroy_func_t destroy);
++
++/**
+  * hb_font_funcs_set_glyph_func:
+  * @ffuncs: font functions.
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_font_funcs_set_glyph_func (hb_font_funcs_t *ffuncs,
+ 			      hb_font_get_glyph_func_t func,
+ 			      void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_font_funcs_set_glyph_h_advance_func:
+  * @ffuncs: font functions.
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_font_funcs_set_glyph_h_advance_func (hb_font_funcs_t *ffuncs,
+ 					hb_font_get_glyph_h_advance_func_t func,
+ 					void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_font_funcs_set_glyph_v_advance_func:
+  * @ffuncs: font functions.
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_font_funcs_set_glyph_v_advance_func (hb_font_funcs_t *ffuncs,
+ 					hb_font_get_glyph_v_advance_func_t func,
+ 					void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_font_funcs_set_glyph_h_origin_func:
+  * @ffuncs: font functions.
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_font_funcs_set_glyph_h_origin_func (hb_font_funcs_t *ffuncs,
+ 				       hb_font_get_glyph_h_origin_func_t func,
+ 				       void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_font_funcs_set_glyph_v_origin_func:
+  * @ffuncs: font functions.
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_font_funcs_set_glyph_v_origin_func (hb_font_funcs_t *ffuncs,
+ 				       hb_font_get_glyph_v_origin_func_t func,
+ 				       void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_font_funcs_set_glyph_h_kerning_func:
+  * @ffuncs: font functions.
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_font_funcs_set_glyph_h_kerning_func (hb_font_funcs_t *ffuncs,
+ 					hb_font_get_glyph_h_kerning_func_t func,
+ 					void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_font_funcs_set_glyph_v_kerning_func:
+  * @ffuncs: font functions.
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_font_funcs_set_glyph_v_kerning_func (hb_font_funcs_t *ffuncs,
+ 					hb_font_get_glyph_v_kerning_func_t func,
+ 					void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_font_funcs_set_glyph_extents_func:
+  * @ffuncs: font functions.
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_font_funcs_set_glyph_extents_func (hb_font_funcs_t *ffuncs,
+ 				      hb_font_get_glyph_extents_func_t func,
+ 				      void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_font_funcs_set_glyph_contour_point_func:
+  * @ffuncs: font functions.
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_font_funcs_set_glyph_contour_point_func (hb_font_funcs_t *ffuncs,
+ 					    hb_font_get_glyph_contour_point_func_t func,
+ 					    void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_font_funcs_set_glyph_name_func:
+  * @ffuncs: font functions.
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_font_funcs_set_glyph_name_func (hb_font_funcs_t *ffuncs,
+ 				   hb_font_get_glyph_name_func_t func,
+ 				   void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_font_funcs_set_glyph_from_name_func:
+  * @ffuncs: font functions.
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_font_funcs_set_glyph_from_name_func (hb_font_funcs_t *ffuncs,
+ 					hb_font_get_glyph_from_name_func_t func,
+ 					void *user_data, hb_destroy_func_t destroy);
+ 
+-
+ /* func dispatch */
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
++hb_font_get_h_extents (hb_font_t *font,
++		       hb_font_extents_t *extents);
++HB_EXTERN hb_bool_t
++hb_font_get_v_extents (hb_font_t *font,
++		       hb_font_extents_t *extents);
++
++HB_EXTERN hb_bool_t
+ hb_font_get_glyph (hb_font_t *font,
+ 		   hb_codepoint_t unicode, hb_codepoint_t variation_selector,
+ 		   hb_codepoint_t *glyph);
+ 
+-hb_position_t
++HB_EXTERN hb_position_t
+ hb_font_get_glyph_h_advance (hb_font_t *font,
+ 			     hb_codepoint_t glyph);
+-hb_position_t
++HB_EXTERN hb_position_t
+ hb_font_get_glyph_v_advance (hb_font_t *font,
+ 			     hb_codepoint_t glyph);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_font_get_glyph_h_origin (hb_font_t *font,
+ 			    hb_codepoint_t glyph,
+ 			    hb_position_t *x, hb_position_t *y);
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_font_get_glyph_v_origin (hb_font_t *font,
+ 			    hb_codepoint_t glyph,
+ 			    hb_position_t *x, hb_position_t *y);
+ 
+-hb_position_t
++HB_EXTERN hb_position_t
+ hb_font_get_glyph_h_kerning (hb_font_t *font,
+ 			     hb_codepoint_t left_glyph, hb_codepoint_t right_glyph);
+-hb_position_t
++HB_EXTERN hb_position_t
+ hb_font_get_glyph_v_kerning (hb_font_t *font,
+ 			     hb_codepoint_t top_glyph, hb_codepoint_t bottom_glyph);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_font_get_glyph_extents (hb_font_t *font,
+ 			   hb_codepoint_t glyph,
+ 			   hb_glyph_extents_t *extents);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_font_get_glyph_contour_point (hb_font_t *font,
+ 				 hb_codepoint_t glyph, unsigned int point_index,
+ 				 hb_position_t *x, hb_position_t *y);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_font_get_glyph_name (hb_font_t *font,
+ 			hb_codepoint_t glyph,
+ 			char *name, unsigned int size);
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_font_get_glyph_from_name (hb_font_t *font,
+ 			     const char *name, int len, /* -1 means nul-terminated */
+ 			     hb_codepoint_t *glyph);
+ 
+ 
+ /* high-level funcs, with fallback */
+ 
+-void
++HB_EXTERN void
++hb_font_get_extents_for_direction (hb_font_t *font,
++				   hb_direction_t direction,
++				   hb_font_extents_t *extents);
++HB_EXTERN void
+ hb_font_get_glyph_advance_for_direction (hb_font_t *font,
+ 					 hb_codepoint_t glyph,
+ 					 hb_direction_t direction,
+ 					 hb_position_t *x, hb_position_t *y);
+-void
++HB_EXTERN void
+ hb_font_get_glyph_origin_for_direction (hb_font_t *font,
+ 					hb_codepoint_t glyph,
+ 					hb_direction_t direction,
+ 					hb_position_t *x, hb_position_t *y);
+-void
++HB_EXTERN void
+ hb_font_add_glyph_origin_for_direction (hb_font_t *font,
+ 					hb_codepoint_t glyph,
+ 					hb_direction_t direction,
+ 					hb_position_t *x, hb_position_t *y);
+-void
++HB_EXTERN void
+ hb_font_subtract_glyph_origin_for_direction (hb_font_t *font,
+ 					     hb_codepoint_t glyph,
+ 					     hb_direction_t direction,
+ 					     hb_position_t *x, hb_position_t *y);
+ 
+-void
++HB_EXTERN void
+ hb_font_get_glyph_kerning_for_direction (hb_font_t *font,
+ 					 hb_codepoint_t first_glyph, hb_codepoint_t second_glyph,
+ 					 hb_direction_t direction,
+ 					 hb_position_t *x, hb_position_t *y);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_font_get_glyph_extents_for_origin (hb_font_t *font,
+ 				      hb_codepoint_t glyph,
+ 				      hb_direction_t direction,
+ 				      hb_glyph_extents_t *extents);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_font_get_glyph_contour_point_for_origin (hb_font_t *font,
+ 					    hb_codepoint_t glyph, unsigned int point_index,
+ 					    hb_direction_t direction,
+ 					    hb_position_t *x, hb_position_t *y);
+ 
+ /* Generates gidDDD if glyph has no name. */
+-void
++HB_EXTERN void
+ hb_font_glyph_to_string (hb_font_t *font,
+ 			 hb_codepoint_t glyph,
+ 			 char *s, unsigned int size);
+ /* Parses gidDDD and uniUUUU strings automatically. */
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_font_glyph_from_string (hb_font_t *font,
+ 			   const char *s, int len, /* -1 means nul-terminated */
+ 			   hb_codepoint_t *glyph);
+ 
+ 
+ /*
+  * hb_font_t
+  */
+ 
+ /* Fonts are very light-weight objects */
+ 
+-hb_font_t *
++HB_EXTERN hb_font_t *
+ hb_font_create (hb_face_t *face);
+ 
+-hb_font_t *
++HB_EXTERN hb_font_t *
+ hb_font_create_sub_font (hb_font_t *parent);
+ 
+-hb_font_t *
++HB_EXTERN hb_font_t *
+ hb_font_get_empty (void);
+ 
+-hb_font_t *
++HB_EXTERN hb_font_t *
+ hb_font_reference (hb_font_t *font);
+ 
+-void
++HB_EXTERN void
+ hb_font_destroy (hb_font_t *font);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_font_set_user_data (hb_font_t          *font,
+ 		       hb_user_data_key_t *key,
+ 		       void *              data,
+ 		       hb_destroy_func_t   destroy,
+ 		       hb_bool_t           replace);
+ 
+ 
+-void *
++HB_EXTERN void *
+ hb_font_get_user_data (hb_font_t          *font,
+ 		       hb_user_data_key_t *key);
+ 
+-void
++HB_EXTERN void
+ hb_font_make_immutable (hb_font_t *font);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_font_is_immutable (hb_font_t *font);
+ 
+-void
++HB_EXTERN void
+ hb_font_set_parent (hb_font_t *font,
+ 		    hb_font_t *parent);
+ 
+-hb_font_t *
++HB_EXTERN hb_font_t *
+ hb_font_get_parent (hb_font_t *font);
+ 
+-hb_face_t *
++HB_EXTERN hb_face_t *
+ hb_font_get_face (hb_font_t *font);
+ 
+ 
+-void
++HB_EXTERN void
+ hb_font_set_funcs (hb_font_t         *font,
+ 		   hb_font_funcs_t   *klass,
+ 		   void              *font_data,
+ 		   hb_destroy_func_t  destroy);
+ 
+ /* Be *very* careful with this function! */
+-void
++HB_EXTERN void
+ hb_font_set_funcs_data (hb_font_t         *font,
+ 		        void              *font_data,
+ 		        hb_destroy_func_t  destroy);
+ 
+ 
+-void
++HB_EXTERN void
+ hb_font_set_scale (hb_font_t *font,
+ 		   int x_scale,
+ 		   int y_scale);
+ 
+-void
++HB_EXTERN void
+ hb_font_get_scale (hb_font_t *font,
+ 		   int *x_scale,
+ 		   int *y_scale);
+ 
+ /*
+  * A zero value means "no hinting in that direction"
+  */
+-void
++HB_EXTERN void
+ hb_font_set_ppem (hb_font_t *font,
+ 		  unsigned int x_ppem,
+ 		  unsigned int y_ppem);
+ 
+-void
++HB_EXTERN void
+ hb_font_get_ppem (hb_font_t *font,
+ 		  unsigned int *x_ppem,
+ 		  unsigned int *y_ppem);
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_FONT_H */
+diff --git a/gfx/harfbuzz/src/hb-ft.cc b/gfx/harfbuzz/src/hb-ft.cc
+--- a/gfx/harfbuzz/src/hb-ft.cc
++++ b/gfx/harfbuzz/src/hb-ft.cc
+@@ -361,16 +361,35 @@ hb_ft_get_glyph_from_name (hb_font_t *fo
+     if (!FT_Get_Glyph_Name(ft_face, 0, buf, sizeof (buf)) &&
+         len < 0 ? !strcmp (buf, name) : !strncmp (buf, name, len))
+       return true;
+   }
+ 
+   return *glyph != 0;
+ }
+ 
++static hb_bool_t
++hb_ft_get_font_h_extents (hb_font_t *font HB_UNUSED,
++			  void *font_data,
++			  hb_font_extents_t *metrics,
++			  void *user_data HB_UNUSED)
++{
++  const hb_ft_font_t *ft_font = (const hb_ft_font_t *) font_data;
++  FT_Face ft_face = ft_font->ft_face;
++  metrics->ascender = ft_face->size->metrics.ascender;
++  metrics->descender = ft_face->size->metrics.descender;
++  metrics->line_gap = ft_face->size->metrics.height - (ft_face->size->metrics.ascender - ft_face->size->metrics.descender);
++  if (font->y_scale < 0)
++  {
++    metrics->ascender = -metrics->ascender;
++    metrics->descender = -metrics->descender;
++    metrics->line_gap = -metrics->line_gap;
++  }
++  return true;
++}
+ 
+ static hb_font_funcs_t *static_ft_funcs = NULL;
+ 
+ #ifdef HB_USE_ATEXIT
+ static
+ void free_static_ft_funcs (void)
+ {
+   hb_font_funcs_destroy (static_ft_funcs);
+@@ -382,16 +401,18 @@ static void
+ {
+ retry:
+   hb_font_funcs_t *funcs = (hb_font_funcs_t *) hb_atomic_ptr_get (&static_ft_funcs);
+ 
+   if (unlikely (!funcs))
+   {
+     funcs = hb_font_funcs_create ();
+ 
++    hb_font_funcs_set_font_h_extents_func (funcs, hb_ft_get_font_h_extents, NULL, NULL);
++    //hb_font_funcs_set_font_v_extents_func (funcs, hb_ft_get_font_v_extents, NULL, NULL);
+     hb_font_funcs_set_glyph_func (funcs, hb_ft_get_glyph, NULL, NULL);
+     hb_font_funcs_set_glyph_h_advance_func (funcs, hb_ft_get_glyph_h_advance, NULL, NULL);
+     hb_font_funcs_set_glyph_v_advance_func (funcs, hb_ft_get_glyph_v_advance, NULL, NULL);
+     //hb_font_funcs_set_glyph_h_origin_func (funcs, hb_ft_get_glyph_h_origin, NULL, NULL);
+     hb_font_funcs_set_glyph_v_origin_func (funcs, hb_ft_get_glyph_v_origin, NULL, NULL);
+     hb_font_funcs_set_glyph_h_kerning_func (funcs, hb_ft_get_glyph_h_kerning, NULL, NULL);
+     //hb_font_funcs_set_glyph_v_kerning_func (funcs, hb_ft_get_glyph_v_kerning, NULL, NULL);
+     hb_font_funcs_set_glyph_extents_func (funcs, hb_ft_get_glyph_extents, NULL, NULL);
+diff --git a/gfx/harfbuzz/src/hb-ft.h b/gfx/harfbuzz/src/hb-ft.h
+--- a/gfx/harfbuzz/src/hb-ft.h
++++ b/gfx/harfbuzz/src/hb-ft.h
+@@ -54,73 +54,73 @@ HB_BEGIN_DECLS
+  * destroyed after hb-face is destroyed.
+  *
+  * Most often you don't want this function.  You should use either
+  * hb_ft_face_create_cached(), or hb_ft_face_create_referenced().
+  * In particular, if you are going to pass NULL as destroy, you
+  * probably should use (the more recent) hb_ft_face_create_referenced()
+  * instead.
+  */
+-hb_face_t *
++HB_EXTERN hb_face_t *
+ hb_ft_face_create (FT_Face           ft_face,
+ 		   hb_destroy_func_t destroy);
+ 
+ /* This version is like hb_ft_face_create(), except that it caches
+  * the hb-face using the generic pointer of the ft-face.  This means
+  * that subsequent calls to this function with the same ft-face will
+  * return the same hb-face (correctly referenced).
+  *
+  * Client is still responsible for making sure that ft-face is destroyed
+  * after hb-face is.
+  */
+-hb_face_t *
++HB_EXTERN hb_face_t *
+ hb_ft_face_create_cached (FT_Face ft_face);
+ 
+ /* This version is like hb_ft_face_create(), except that it calls
+  * FT_Reference_Face() on ft-face, as such keeping ft-face alive
+  * as long as the hb-face is.
+  *
+  * This is the most convenient version to use.  Use it unless you have
+  * very good reasons not to.
+  */
+-hb_face_t *
++HB_EXTERN hb_face_t *
+ hb_ft_face_create_referenced (FT_Face ft_face);
+ 
+ 
+ /*
+  * hb-font from ft-face.
+  */
+ 
+ /*
+  * Note:
+  *
+  * Set face size on ft-face before creating hb-font from it.
+  * Otherwise hb-ft would NOT pick up the font size correctly.
+  */
+ 
+ /* See notes on hb_ft_face_create().  Same issues re lifecycle-management
+  * apply here.  Use hb_ft_font_create_referenced() if you can. */
+-hb_font_t *
++HB_EXTERN hb_font_t *
+ hb_ft_font_create (FT_Face           ft_face,
+ 		   hb_destroy_func_t destroy);
+ 
+ /* See notes on hb_ft_face_create_referenced() re lifecycle-management
+  * issues. */
+-hb_font_t *
++HB_EXTERN hb_font_t *
+ hb_ft_font_create_referenced (FT_Face ft_face);
+ 
+-FT_Face
++HB_EXTERN FT_Face
+ hb_ft_font_get_face (hb_font_t *font);
+ 
+-void
++HB_EXTERN void
+ hb_ft_font_set_load_flags (hb_font_t *font, int load_flags);
+ 
+-int
++HB_EXTERN int
+ hb_ft_font_get_load_flags (hb_font_t *font);
+ 
+ /* Makes an hb_font_t use FreeType internally to implement font functions. */
+-void
++HB_EXTERN void
+ hb_ft_font_set_funcs (hb_font_t *font);
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_FT_H */
+diff --git a/gfx/harfbuzz/src/hb-glib.cc b/gfx/harfbuzz/src/hb-glib.cc
+--- a/gfx/harfbuzz/src/hb-glib.cc
++++ b/gfx/harfbuzz/src/hb-glib.cc
+@@ -378,16 +378,18 @@ hb_glib_get_unicode_funcs (void)
+ #undef HB_UNICODE_FUNC_IMPLEMENT
+     }
+   };
+ 
+   return const_cast<hb_unicode_funcs_t *> (&_hb_glib_unicode_funcs);
+ }
+ 
+ /**
++ * hb_glib_blob_create:
++ *
+  * Since: 0.9.38
+  **/
+ hb_blob_t *
+ hb_glib_blob_create (GBytes *gbytes)
+ {
+   gsize size = 0;
+   gconstpointer data = g_bytes_get_data (gbytes, &size);
+   return hb_blob_create ((const char *) data,
+diff --git a/gfx/harfbuzz/src/hb-glib.h b/gfx/harfbuzz/src/hb-glib.h
+--- a/gfx/harfbuzz/src/hb-glib.h
++++ b/gfx/harfbuzz/src/hb-glib.h
+@@ -31,25 +31,25 @@
+ 
+ #include "hb.h"
+ 
+ #include <glib.h>
+ 
+ HB_BEGIN_DECLS
+ 
+ 
+-hb_script_t
++HB_EXTERN hb_script_t
+ hb_glib_script_to_script (GUnicodeScript script);
+ 
+-GUnicodeScript
++HB_EXTERN GUnicodeScript
+ hb_glib_script_from_script (hb_script_t script);
+ 
+ 
+-hb_unicode_funcs_t *
++HB_EXTERN hb_unicode_funcs_t *
+ hb_glib_get_unicode_funcs (void);
+ 
+-hb_blob_t *
++HB_EXTERN hb_blob_t *
+ hb_glib_blob_create (GBytes *gbytes);
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_GLIB_H */
+diff --git a/gfx/harfbuzz/src/hb-gobject-enums.h.tmpl b/gfx/harfbuzz/src/hb-gobject-enums.h.tmpl
+--- a/gfx/harfbuzz/src/hb-gobject-enums.h.tmpl
++++ b/gfx/harfbuzz/src/hb-gobject-enums.h.tmpl
+@@ -37,17 +37,17 @@
+ #include <glib-object.h>
+ 
+ HB_BEGIN_DECLS
+ 
+ 
+ /*** END file-header ***/
+ 
+ /*** BEGIN value-header ***/
+-GType @enum_name@_get_type (void) G_GNUC_CONST;
++HB_EXTERN GType @enum_name@_get_type (void) G_GNUC_CONST;
+ #define @ENUMPREFIX@_TYPE_@ENUMSHORT@ (@enum_name@_get_type ())
+ 
+ /*** END value-header ***/
+ 
+ /*** BEGIN file-tail ***/
+ 
+ HB_END_DECLS
+ 
+diff --git a/gfx/harfbuzz/src/hb-gobject-structs.h b/gfx/harfbuzz/src/hb-gobject-structs.h
+--- a/gfx/harfbuzz/src/hb-gobject-structs.h
++++ b/gfx/harfbuzz/src/hb-gobject-structs.h
+@@ -38,68 +38,68 @@
+ HB_BEGIN_DECLS
+ 
+ 
+ /* Object types */
+ 
+ /**
+  * Since: 0.9.2
+  **/
+-GType hb_gobject_blob_get_type (void);
++HB_EXTERN GType hb_gobject_blob_get_type (void);
+ #define HB_GOBJECT_TYPE_BLOB (hb_gobject_blob_get_type ())
+ 
+ /**
+  * Since: 0.9.2
+  **/
+-GType hb_gobject_buffer_get_type (void);
++HB_EXTERN GType hb_gobject_buffer_get_type (void);
+ #define HB_GOBJECT_TYPE_BUFFER (hb_gobject_buffer_get_type ())
+ 
+ /**
+  * Since: 0.9.2
+  **/
+-GType hb_gobject_face_get_type (void);
++HB_EXTERN GType hb_gobject_face_get_type (void);
+ #define HB_GOBJECT_TYPE_FACE (hb_gobject_face_get_type ())
+ 
+ /**
+  * Since: 0.9.2
+  **/
+-GType hb_gobject_font_get_type (void);
++HB_EXTERN GType hb_gobject_font_get_type (void);
+ #define HB_GOBJECT_TYPE_FONT (hb_gobject_font_get_type ())
+ 
+ /**
+  * Since: 0.9.2
+  **/
+-GType hb_gobject_font_funcs_get_type (void);
++HB_EXTERN GType hb_gobject_font_funcs_get_type (void);
+ #define HB_GOBJECT_TYPE_FONT_FUNCS (hb_gobject_font_funcs_get_type ())
+ 
+-GType hb_gobject_set_get_type (void);
++HB_EXTERN GType hb_gobject_set_get_type (void);
+ #define HB_GOBJECT_TYPE_SET (hb_gobject_set_get_type ())
+ 
+-GType hb_gobject_shape_plan_get_type (void);
++HB_EXTERN GType hb_gobject_shape_plan_get_type (void);
+ #define HB_GOBJECT_TYPE_SHAPE_PLAN (hb_gobject_shape_plan_get_type ())
+ 
+ /**
+  * Since: 0.9.2
+  **/
+-GType hb_gobject_unicode_funcs_get_type (void);
++HB_EXTERN GType hb_gobject_unicode_funcs_get_type (void);
+ #define HB_GOBJECT_TYPE_UNICODE_FUNCS (hb_gobject_unicode_funcs_get_type ())
+ 
+ /* Value types */
+ 
+-GType hb_gobject_feature_get_type (void);
++HB_EXTERN GType hb_gobject_feature_get_type (void);
+ #define HB_GOBJECT_TYPE_FEATURE (hb_gobject_feature_get_type ())
+ 
+-GType hb_gobject_glyph_info_get_type (void);
++HB_EXTERN GType hb_gobject_glyph_info_get_type (void);
+ #define HB_GOBJECT_TYPE_GLYPH_INFO (hb_gobject_glyph_info_get_type ())
+ 
+-GType hb_gobject_glyph_position_get_type (void);
++HB_EXTERN GType hb_gobject_glyph_position_get_type (void);
+ #define HB_GOBJECT_TYPE_GLYPH_POSITION (hb_gobject_glyph_position_get_type ())
+ 
+-GType hb_gobject_segment_properties_get_type (void);
++HB_EXTERN GType hb_gobject_segment_properties_get_type (void);
+ #define HB_GOBJECT_TYPE_SEGMENT_PROPERTIES (hb_gobject_segment_properties_get_type ())
+ 
+-GType hb_gobject_user_data_key_get_type (void);
++HB_EXTERN GType hb_gobject_user_data_key_get_type (void);
+ #define HB_GOBJECT_TYPE_USER_DATA_KEY (hb_gobject_user_data_key_get_type ())
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_GOBJECT_H */
+diff --git a/gfx/harfbuzz/src/hb-graphite2.cc b/gfx/harfbuzz/src/hb-graphite2.cc
+--- a/gfx/harfbuzz/src/hb-graphite2.cc
++++ b/gfx/harfbuzz/src/hb-graphite2.cc
+@@ -346,27 +346,28 @@ hb_bool_t
+     {
+       hb_glyph_info_t *info = &buffer->info[clusters[i].base_glyph + j];
+       info->codepoint = gids[clusters[i].base_glyph + j];
+       info->cluster = clusters[i].cluster;
+     }
+   }
+   buffer->len = glyph_count;
+ 
++  float yscale = font->y_scale / font->x_scale;
+   /* Positioning. */
+   if (!HB_DIRECTION_IS_BACKWARD(buffer->props.direction))
+   {
+     hb_glyph_position_t *pPos;
+     for (pPos = hb_buffer_get_glyph_positions (buffer, NULL), is = gr_seg_first_slot (seg);
+          is; pPos++, is = gr_slot_next_in_segment (is))
+     {
+       pPos->x_offset = gr_slot_origin_X (is) - curradvx;
+-      pPos->y_offset = gr_slot_origin_Y (is) - curradvy;
++      pPos->y_offset = gr_slot_origin_Y (is) * yscale - curradvy;
+       pPos->x_advance = gr_slot_advance_X (is, grface, grfont);
+-      pPos->y_advance = gr_slot_advance_Y (is, grface, grfont);
++      pPos->y_advance = gr_slot_advance_Y (is, grface, grfont) * yscale;
+       curradvx += pPos->x_advance;
+       curradvy += pPos->y_advance;
+     }
+     pPos[-1].x_advance += gr_seg_advance_X(seg) - curradvx;
+   }
+   else
+   {
+     hb_glyph_position_t *pPos = hb_buffer_get_glyph_positions (buffer, NULL) + buffer->len - 1;
+@@ -382,27 +383,27 @@ hb_bool_t
+         curradvx += clusx;
+         curradvy += clusy;
+         currclus = info->cluster;
+         clusx = 0.;
+         clusy = 0.;
+         for (tis = is, tinfo = info; tis && tinfo->cluster == currclus; tis = gr_slot_prev_in_segment (tis), tinfo--)
+         {
+           clusx += gr_slot_advance_X (tis, grface, grfont);
+-          clusy += gr_slot_advance_Y (tis, grface, grfont);
++          clusy += gr_slot_advance_Y (tis, grface, grfont) * yscale;
+         }
+         curradvx += clusx;
+         curradvy += clusy;
+       }
+       pPos->x_advance = gr_slot_advance_X (is, grface, grfont);
+-      pPos->y_advance = gr_slot_advance_Y (is, grface, grfont);
++      pPos->y_advance = gr_slot_advance_Y (is, grface, grfont) * yscale;
+       curradvx -= pPos->x_advance;
+       curradvy -= pPos->y_advance;
+       pPos->x_offset = gr_slot_origin_X (is) - curradvx;
+-      pPos->y_offset = gr_slot_origin_Y (is) - curradvy;
++      pPos->y_offset = gr_slot_origin_Y (is) * yscale - curradvy;
+     }
+     hb_buffer_reverse_clusters (buffer);
+   }
+ 
+   if (feats) gr_featureval_destroy (feats);
+   gr_seg_destroy (seg);
+ 
+   return true;
+diff --git a/gfx/harfbuzz/src/hb-graphite2.h b/gfx/harfbuzz/src/hb-graphite2.h
+--- a/gfx/harfbuzz/src/hb-graphite2.h
++++ b/gfx/harfbuzz/src/hb-graphite2.h
+@@ -31,18 +31,18 @@
+ #include <graphite2/Font.h>
+ 
+ HB_BEGIN_DECLS
+ 
+ 
+ #define HB_GRAPHITE2_TAG_SILF HB_TAG('S','i','l','f')
+ 
+ 
+-gr_face *
++HB_EXTERN gr_face *
+ hb_graphite2_face_get_gr_face (hb_face_t *face);
+ 
+-gr_font *
++HB_EXTERN gr_font *
+ hb_graphite2_font_get_gr_font (hb_font_t *font);
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_GRAPHITE2_H */
+diff --git a/gfx/harfbuzz/src/hb-icu.h b/gfx/harfbuzz/src/hb-icu.h
+--- a/gfx/harfbuzz/src/hb-icu.h
++++ b/gfx/harfbuzz/src/hb-icu.h
+@@ -31,22 +31,22 @@
+ 
+ #include "hb.h"
+ 
+ #include <unicode/uscript.h>
+ 
+ HB_BEGIN_DECLS
+ 
+ 
+-hb_script_t
++HB_EXTERN hb_script_t
+ hb_icu_script_to_script (UScriptCode script);
+ 
+-UScriptCode
++HB_EXTERN UScriptCode
+ hb_icu_script_from_script (hb_script_t script);
+ 
+ 
+-hb_unicode_funcs_t *
++HB_EXTERN hb_unicode_funcs_t *
+ hb_icu_get_unicode_funcs (void);
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_ICU_H */
+diff --git a/gfx/harfbuzz/src/hb-open-type-private.hh b/gfx/harfbuzz/src/hb-open-type-private.hh
+--- a/gfx/harfbuzz/src/hb-open-type-private.hh
++++ b/gfx/harfbuzz/src/hb-open-type-private.hh
+@@ -98,19 +98,16 @@ static inline Type& StructAfter(TObject 
+ # define DEFINE_COMPILES_ASSERTION(_code) _DEFINE_COMPILES_ASSERTION0 (__LINE__, _code)
+ 
+ 
+ #define DEFINE_SIZE_STATIC(size) \
+   DEFINE_INSTANCE_ASSERTION (sizeof (*this) == (size)); \
+   static const unsigned int static_size = (size); \
+   static const unsigned int min_size = (size)
+ 
+-/* Size signifying variable-sized array */
+-#define VAR 1
+-
+ #define DEFINE_SIZE_UNION(size, _member) \
+   DEFINE_INSTANCE_ASSERTION (this->u._member.static_size == (size)); \
+   static const unsigned int min_size = (size)
+ 
+ #define DEFINE_SIZE_MIN(size) \
+   DEFINE_INSTANCE_ASSERTION (sizeof (*this) >= (size)); \
+   static const unsigned int min_size = (size)
+ 
+@@ -180,17 +177,17 @@ struct hb_dispatch_context_t
+ 
+ #define TRACE_SANITIZE(this) \
+ 	hb_auto_trace_t<HB_DEBUG_SANITIZE, bool> trace \
+ 	(&c->debug_depth, c->get_name (), this, HB_FUNC, \
+ 	 "");
+ 
+ /* This limits sanitizing time on really broken fonts. */
+ #ifndef HB_SANITIZE_MAX_EDITS
+-#define HB_SANITIZE_MAX_EDITS 8
++#define HB_SANITIZE_MAX_EDITS 32
+ #endif
+ 
+ struct hb_sanitize_context_t :
+        hb_dispatch_context_t<hb_sanitize_context_t, bool, HB_DEBUG_SANITIZE>
+ {
+   inline hb_sanitize_context_t (void) :
+ 	debug_depth (0),
+ 	start (NULL), end (NULL),
+diff --git a/gfx/harfbuzz/src/hb-ot-font.cc b/gfx/harfbuzz/src/hb-ot-font.cc
+--- a/gfx/harfbuzz/src/hb-ot-font.cc
++++ b/gfx/harfbuzz/src/hb-ot-font.cc
+@@ -30,34 +30,63 @@
+ 
+ #include "hb-font-private.hh"
+ 
+ #include "hb-ot-cmap-table.hh"
+ #include "hb-ot-glyf-table.hh"
+ #include "hb-ot-head-table.hh"
+ #include "hb-ot-hhea-table.hh"
+ #include "hb-ot-hmtx-table.hh"
++#include "hb-ot-os2-table.hh"
+ 
+ 
+ struct hb_ot_face_metrics_accelerator_t
+ {
+   unsigned int num_metrics;
+   unsigned int num_advances;
+   unsigned int default_advance;
++  unsigned short ascender;
++  unsigned short descender;
++  unsigned short line_gap;
++
+   const OT::_mtx *table;
+   hb_blob_t *blob;
+ 
+   inline void init (hb_face_t *face,
+-		    hb_tag_t _hea_tag, hb_tag_t _mtx_tag)
++		    hb_tag_t _hea_tag,
++		    hb_tag_t _mtx_tag,
++		    hb_tag_t os2_tag)
+   {
+     this->default_advance = face->get_upem ();
+ 
++    bool got_font_extents = false;
++    if (os2_tag)
++    {
++      hb_blob_t *os2_blob = OT::Sanitizer<OT::os2>::sanitize (face->reference_table (os2_tag));
++      const OT::os2 *os2 = OT::Sanitizer<OT::os2>::lock_instance (os2_blob);
++#define USE_TYPO_METRICS (1u<<7)
++      if (0 != (os2->fsSelection & USE_TYPO_METRICS))
++      {
++	this->ascender = os2->sTypoAscender;
++	this->descender = os2->sTypoDescender;
++	this->line_gap = os2->sTypoLineGap;
++	got_font_extents = (this->ascender | this->descender) != 0;
++      }
++      hb_blob_destroy (os2_blob);
++    }
++
+     hb_blob_t *_hea_blob = OT::Sanitizer<OT::_hea>::sanitize (face->reference_table (_hea_tag));
+     const OT::_hea *_hea = OT::Sanitizer<OT::_hea>::lock_instance (_hea_blob);
+     this->num_advances = _hea->numberOfLongMetrics;
++    if (!got_font_extents)
++    {
++      this->ascender = _hea->ascender;
++      this->descender = _hea->descender;
++      this->line_gap = _hea->lineGap;
++    }
+     hb_blob_destroy (_hea_blob);
+ 
+     this->blob = OT::Sanitizer<OT::_mtx>::sanitize (face->reference_table (_mtx_tag));
+ 
+     /* Cap num_metrics() and num_advances() based on table length. */
+     unsigned int len = hb_blob_get_length (this->blob);
+     if (unlikely (this->num_advances * 4 > len))
+       this->num_advances = len / 4;
+@@ -247,18 +276,18 @@ static hb_ot_font_t *
+ _hb_ot_font_create (hb_face_t *face)
+ {
+   hb_ot_font_t *ot_font = (hb_ot_font_t *) calloc (1, sizeof (hb_ot_font_t));
+ 
+   if (unlikely (!ot_font))
+     return NULL;
+ 
+   ot_font->cmap.init (face);
+-  ot_font->h_metrics.init (face, HB_OT_TAG_hhea, HB_OT_TAG_hmtx);
+-  ot_font->v_metrics.init (face, HB_OT_TAG_vhea, HB_OT_TAG_vmtx); /* TODO Can we do this lazily? */
++  ot_font->h_metrics.init (face, HB_OT_TAG_hhea, HB_OT_TAG_hmtx, HB_OT_TAG_os2);
++  ot_font->v_metrics.init (face, HB_OT_TAG_vhea, HB_OT_TAG_vmtx, HB_TAG_NONE); /* TODO Can we do this lazily? */
+   ot_font->glyf.init (face);
+ 
+   return ot_font;
+ }
+ 
+ static void
+ _hb_ot_font_destroy (hb_ot_font_t *ot_font)
+ {
+@@ -315,16 +344,41 @@ hb_ot_get_glyph_extents (hb_font_t *font
+   bool ret = ot_font->glyf.get_extents (glyph, extents);
+   extents->x_bearing = font->em_scale_x (extents->x_bearing);
+   extents->y_bearing = font->em_scale_y (extents->y_bearing);
+   extents->width     = font->em_scale_x (extents->width);
+   extents->height    = font->em_scale_y (extents->height);
+   return ret;
+ }
+ 
++static hb_bool_t
++hb_ot_get_font_h_extents (hb_font_t *font HB_UNUSED,
++			  void *font_data,
++			  hb_font_extents_t *metrics,
++			  void *user_data HB_UNUSED)
++{
++  const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data;
++  metrics->ascender = font->em_scale_y (ot_font->h_metrics.ascender);
++  metrics->descender = font->em_scale_y (ot_font->h_metrics.descender);
++  metrics->line_gap = font->em_scale_y (ot_font->h_metrics.line_gap);
++  return true;
++}
++
++static hb_bool_t
++hb_ot_get_font_v_extents (hb_font_t *font HB_UNUSED,
++			  void *font_data,
++			  hb_font_extents_t *metrics,
++			  void *user_data HB_UNUSED)
++{
++  const hb_ot_font_t *ot_font = (const hb_ot_font_t *) font_data;
++  metrics->ascender = font->em_scale_x (ot_font->v_metrics.ascender);
++  metrics->descender = font->em_scale_x (ot_font->v_metrics.descender);
++  metrics->line_gap = font->em_scale_x (ot_font->v_metrics.line_gap);
++  return true;
++}
+ 
+ static hb_font_funcs_t *static_ot_funcs = NULL;
+ 
+ #ifdef HB_USE_ATEXIT
+ static
+ void free_static_ot_funcs (void)
+ {
+   hb_font_funcs_destroy (static_ot_funcs);
+@@ -336,16 +390,18 @@ static hb_font_funcs_t *
+ {
+ retry:
+   hb_font_funcs_t *funcs = (hb_font_funcs_t *) hb_atomic_ptr_get (&static_ot_funcs);
+ 
+   if (unlikely (!funcs))
+   {
+     funcs = hb_font_funcs_create ();
+ 
++    hb_font_funcs_set_font_h_extents_func (funcs, hb_ot_get_font_h_extents, NULL, NULL);
++    hb_font_funcs_set_font_v_extents_func (funcs, hb_ot_get_font_v_extents, NULL, NULL);
+     hb_font_funcs_set_glyph_func (funcs, hb_ot_get_glyph, NULL, NULL);
+     hb_font_funcs_set_glyph_h_advance_func (funcs, hb_ot_get_glyph_h_advance, NULL, NULL);
+     hb_font_funcs_set_glyph_v_advance_func (funcs, hb_ot_get_glyph_v_advance, NULL, NULL);
+     //hb_font_funcs_set_glyph_h_origin_func (funcs, hb_ot_get_glyph_h_origin, NULL, NULL);
+     //hb_font_funcs_set_glyph_v_origin_func (funcs, hb_ot_get_glyph_v_origin, NULL, NULL);
+     //hb_font_funcs_set_glyph_h_kerning_func (funcs, hb_ot_get_glyph_h_kerning, NULL, NULL); TODO
+     //hb_font_funcs_set_glyph_v_kerning_func (funcs, hb_ot_get_glyph_v_kerning, NULL, NULL);
+     hb_font_funcs_set_glyph_extents_func (funcs, hb_ot_get_glyph_extents, NULL, NULL);
+@@ -365,16 +421,18 @@ retry:
+ #endif
+   };
+ 
+   return funcs;
+ }
+ 
+ 
+ /**
++ * hb_ot_font_set_funcs:
++ *
+  * Since: 0.9.28
+  **/
+ void
+ hb_ot_font_set_funcs (hb_font_t *font)
+ {
+   hb_ot_font_t *ot_font = _hb_ot_font_create (font->face);
+   if (unlikely (!ot_font))
+     return;
+diff --git a/gfx/harfbuzz/src/hb-ot-font.h b/gfx/harfbuzz/src/hb-ot-font.h
+--- a/gfx/harfbuzz/src/hb-ot-font.h
++++ b/gfx/harfbuzz/src/hb-ot-font.h
+@@ -31,15 +31,15 @@
+ #ifndef HB_OT_FONT_H
+ #define HB_OT_FONT_H
+ 
+ #include "hb.h"
+ 
+ HB_BEGIN_DECLS
+ 
+ 
+-void
++HB_EXTERN void
+ hb_ot_font_set_funcs (hb_font_t *font);
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_OT_FONT_H */
+diff --git a/gfx/harfbuzz/src/hb-ot-head-table.hh b/gfx/harfbuzz/src/hb-ot-head-table.hh
+--- a/gfx/harfbuzz/src/hb-ot-head-table.hh
++++ b/gfx/harfbuzz/src/hb-ot-head-table.hh
+@@ -50,17 +50,19 @@ struct head
+     unsigned int upem = unitsPerEm;
+     /* If no valid head table found, assume 1000, which matches typical Type1 usage. */
+     return 16 <= upem && upem <= 16384 ? upem : 1000;
+   }
+ 
+   inline bool sanitize (hb_sanitize_context_t *c) const
+   {
+     TRACE_SANITIZE (this);
+-    return_trace (c->check_struct (this) && likely (version.major == 1));
++    return_trace (c->check_struct (this) &&
++		  version.major == 1 &&
++		  magicNumber == 0x5F0F3CF5u);
+   }
+ 
+   protected:
+   FixedVersion	version;		/* Version of the head table--currently
+ 					 * 0x00010000u for version 1.0. */
+   FixedVersion	fontRevision;		/* Set by font manufacturer. */
+   ULONG		checkSumAdjustment;	/* To compute: set it to 0, sum the
+ 					 * entire font as ULONG, then store
+diff --git a/gfx/harfbuzz/src/hb-ot-layout-common-private.hh b/gfx/harfbuzz/src/hb-ot-layout-common-private.hh
+--- a/gfx/harfbuzz/src/hb-ot-layout-common-private.hh
++++ b/gfx/harfbuzz/src/hb-ot-layout-common-private.hh
+@@ -540,16 +540,19 @@ struct Feature
+ 
+       OffsetTo<FeatureParams> new_offset;
+       /* Check that it did not overflow. */
+       new_offset.set (new_offset_int);
+       if (new_offset == new_offset_int &&
+ 	  c->try_set (&featureParams, new_offset) &&
+ 	  !featureParams.sanitize (c, this, closure ? closure->tag : HB_TAG_NONE))
+ 	return_trace (false);
++
++      if (c->edit_count > 1)
++        c->edit_count--; /* This was a "legitimate" edit; don't contribute to error count. */
+     }
+ 
+     return_trace (true);
+   }
+ 
+   OffsetTo<FeatureParams>
+ 		 featureParams;	/* Offset to Feature Parameters table (if one
+ 				 * has been defined for the feature), relative
+diff --git a/gfx/harfbuzz/src/hb-ot-layout-gpos-table.hh b/gfx/harfbuzz/src/hb-ot-layout-gpos-table.hh
+--- a/gfx/harfbuzz/src/hb-ot-layout-gpos-table.hh
++++ b/gfx/harfbuzz/src/hb-ot-layout-gpos-table.hh
+@@ -737,17 +737,17 @@ struct PairPosFormat1
+   DEFINE_SIZE_ARRAY (10, pairSet);
+ };
+ 
+ struct PairPosFormat2
+ {
+   inline void collect_glyphs (hb_collect_glyphs_context_t *c) const
+   {
+     TRACE_COLLECT_GLYPHS (this);
+-    /* (this+coverage).add_coverage (c->input); // Don't need this. */
++    (this+coverage).add_coverage (c->input);
+ 
+     unsigned int count1 = class1Count;
+     const ClassDef &klass1 = this+classDef1;
+     for (unsigned int i = 0; i < count1; i++)
+       klass1.add_class (c->input, i);
+ 
+     unsigned int count2 = class2Count;
+     const ClassDef &klass2 = this+classDef2;
+diff --git a/gfx/harfbuzz/src/hb-ot-layout-gsubgpos-private.hh b/gfx/harfbuzz/src/hb-ot-layout-gsubgpos-private.hh
+--- a/gfx/harfbuzz/src/hb-ot-layout-gsubgpos-private.hh
++++ b/gfx/harfbuzz/src/hb-ot-layout-gsubgpos-private.hh
+@@ -840,37 +840,43 @@ static inline bool ligate_input (hb_appl
+   }
+   c->replace_glyph_with_ligature (lig_glyph, klass);
+ 
+   for (unsigned int i = 1; i < count; i++)
+   {
+     while (buffer->idx < match_positions[i] && !buffer->in_error)
+     {
+       if (!is_mark_ligature) {
++        unsigned int this_comp = _hb_glyph_info_get_lig_comp (&buffer->cur());
++	if (this_comp == 0)
++	  this_comp = last_num_components;
+ 	unsigned int new_lig_comp = components_so_far - last_num_components +
+-				    MIN (MAX (_hb_glyph_info_get_lig_comp (&buffer->cur()), 1u), last_num_components);
+-	_hb_glyph_info_set_lig_props_for_mark (&buffer->cur(), lig_id, new_lig_comp);
++				    MIN (this_comp, last_num_components);
++	  _hb_glyph_info_set_lig_props_for_mark (&buffer->cur(), lig_id, new_lig_comp);
+       }
+       buffer->next_glyph ();
+     }
+ 
+     last_lig_id = _hb_glyph_info_get_lig_id (&buffer->cur());
+     last_num_components = _hb_glyph_info_get_lig_num_comps (&buffer->cur());
+     components_so_far += last_num_components;
+ 
+     /* Skip the base glyph */
+     buffer->idx++;
+   }
+ 
+   if (!is_mark_ligature && last_lig_id) {
+     /* Re-adjust components for any marks following. */
+     for (unsigned int i = buffer->idx; i < buffer->len; i++) {
+       if (last_lig_id == _hb_glyph_info_get_lig_id (&buffer->info[i])) {
++        unsigned int this_comp = _hb_glyph_info_get_lig_comp (&buffer->info[i]);
++	if (!this_comp)
++	  break;
+ 	unsigned int new_lig_comp = components_so_far - last_num_components +
+-				    MIN (MAX (_hb_glyph_info_get_lig_comp (&buffer->info[i]), 1u), last_num_components);
++				    MIN (this_comp, last_num_components);
+ 	_hb_glyph_info_set_lig_props_for_mark (&buffer->info[i], lig_id, new_lig_comp);
+       } else
+ 	break;
+     }
+   }
+   return_trace (true);
+ }
+ 
+@@ -966,16 +972,21 @@ static inline bool apply_lookup (hb_appl
+   }
+ 
+   for (unsigned int i = 0; i < lookupCount; i++)
+   {
+     unsigned int idx = lookupRecord[i].sequenceIndex;
+     if (idx >= count)
+       continue;
+ 
++    /* Don't recurse to ourself at same position.
++     * Note that this test is too naive, it doesn't catch longer loops. */
++    if (idx == 0 && lookupRecord[i].lookupListIndex == c->lookup_index)
++      continue;
++
+     buffer->move_to (match_positions[idx]);
+ 
+     unsigned int orig_len = buffer->backtrack_len () + buffer->lookahead_len ();
+     if (!c->recurse (lookupRecord[i].lookupListIndex))
+       continue;
+ 
+     unsigned int new_len = buffer->backtrack_len () + buffer->lookahead_len ();
+     int delta = new_len - orig_len;
+diff --git a/gfx/harfbuzz/src/hb-ot-layout-private.hh b/gfx/harfbuzz/src/hb-ot-layout-private.hh
+--- a/gfx/harfbuzz/src/hb-ot-layout-private.hh
++++ b/gfx/harfbuzz/src/hb-ot-layout-private.hh
+@@ -512,21 +512,19 @@ static inline bool
+ static inline void
+ _hb_glyph_info_clear_ligated_and_multiplied (hb_glyph_info_t *info)
+ {
+   info->glyph_props() &= ~(HB_OT_LAYOUT_GLYPH_PROPS_LIGATED |
+ 			   HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED);
+ }
+ 
+ static inline void
+-_hb_glyph_info_clear_substituted_and_ligated_and_multiplied (hb_glyph_info_t *info)
++_hb_glyph_info_clear_substituted (hb_glyph_info_t *info)
+ {
+-  info->glyph_props() &= ~(HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED |
+-			   HB_OT_LAYOUT_GLYPH_PROPS_LIGATED |
+-			   HB_OT_LAYOUT_GLYPH_PROPS_MULTIPLIED);
++  info->glyph_props() &= ~(HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED);
+ }
+ 
+ 
+ /* Allocation / deallocation. */
+ 
+ static inline void
+ _hb_buffer_allocate_unicode_vars (hb_buffer_t *buffer)
+ {
+diff --git a/gfx/harfbuzz/src/hb-ot-layout.cc b/gfx/harfbuzz/src/hb-ot-layout.cc
+--- a/gfx/harfbuzz/src/hb-ot-layout.cc
++++ b/gfx/harfbuzz/src/hb-ot-layout.cc
+@@ -125,26 +125,30 @@ static inline const OT::GPOS&
+ 
+ hb_bool_t
+ hb_ot_layout_has_glyph_classes (hb_face_t *face)
+ {
+   return _get_gdef (face).has_glyph_classes ();
+ }
+ 
+ /**
++ * hb_ot_layout_get_glyph_class:
++ *
+  * Since: 0.9.7
+  **/
+ hb_ot_layout_glyph_class_t
+ hb_ot_layout_get_glyph_class (hb_face_t      *face,
+ 			      hb_codepoint_t  glyph)
+ {
+   return (hb_ot_layout_glyph_class_t) _get_gdef (face).get_glyph_class (glyph);
+ }
+ 
+ /**
++ * hb_ot_layout_get_glyphs_in_class:
++ *
+  * Since: 0.9.7
+  **/
+ void
+ hb_ot_layout_get_glyphs_in_class (hb_face_t                  *face,
+ 				  hb_ot_layout_glyph_class_t  klass,
+ 				  hb_set_t                   *glyphs /* OUT */)
+ {
+   return _get_gdef (face).get_glyphs_in_class (klass, glyphs);
+@@ -360,16 +364,18 @@ hb_ot_layout_language_get_required_featu
+ 						     table_tag,
+ 						     script_index,
+ 						     language_index,
+ 						     feature_index,
+ 						     NULL);
+ }
+ 
+ /**
++ * hb_ot_layout_language_get_required_feature:
++ *
+  * Since: 0.9.30
+  **/
+ hb_bool_t
+ hb_ot_layout_language_get_required_feature (hb_face_t    *face,
+ 					    hb_tag_t      table_tag,
+ 					    unsigned int  script_index,
+ 					    unsigned int  language_index,
+ 					    unsigned int *feature_index,
+@@ -447,16 +453,18 @@ hb_ot_layout_language_find_feature (hb_f
+     }
+   }
+ 
+   if (feature_index) *feature_index = HB_OT_LAYOUT_NO_FEATURE_INDEX;
+   return false;
+ }
+ 
+ /**
++ * hb_ot_layout_feature_get_lookups:
++ *
+  * Since: 0.9.7
+  **/
+ unsigned int
+ hb_ot_layout_feature_get_lookups (hb_face_t    *face,
+ 				  hb_tag_t      table_tag,
+ 				  unsigned int  feature_index,
+ 				  unsigned int  start_offset,
+ 				  unsigned int *lookup_count /* IN/OUT */,
+@@ -464,16 +472,18 @@ hb_ot_layout_feature_get_lookups (hb_fac
+ {
+   const OT::GSUBGPOS &g = get_gsubgpos_table (face, table_tag);
+   const OT::Feature &f = g.get_feature (feature_index);
+ 
+   return f.get_lookup_indexes (start_offset, lookup_count, lookup_indexes);
+ }
+ 
+ /**
++ * hb_ot_layout_table_get_lookup_count:
++ *
+  * Since: 0.9.22
+  **/
+ unsigned int
+ hb_ot_layout_table_get_lookup_count (hb_face_t    *face,
+ 				     hb_tag_t      table_tag)
+ {
+   switch (table_tag)
+   {
+@@ -624,16 +634,18 @@ static void
+ 						language_index,
+ 						features,
+ 						lookup_indexes);
+     }
+   }
+ }
+ 
+ /**
++ * hb_ot_layout_collect_lookups:
++ *
+  * Since: 0.9.8
+  **/
+ void
+ hb_ot_layout_collect_lookups (hb_face_t      *face,
+ 			      hb_tag_t        table_tag,
+ 			      const hb_tag_t *scripts,
+ 			      const hb_tag_t *languages,
+ 			      const hb_tag_t *features,
+@@ -668,16 +680,18 @@ hb_ot_layout_collect_lookups (hb_face_t 
+ 						 languages,
+ 						 features,
+ 						 lookup_indexes);
+     }
+   }
+ }
+ 
+ /**
++ * hb_ot_layout_lookup_collect_glyphs:
++ *
+  * Since: 0.9.7
+  **/
+ void
+ hb_ot_layout_lookup_collect_glyphs (hb_face_t    *face,
+ 				    hb_tag_t      table_tag,
+ 				    unsigned int  lookup_index,
+ 				    hb_set_t     *glyphs_before, /* OUT. May be NULL */
+ 				    hb_set_t     *glyphs_input,  /* OUT. May be NULL */
+@@ -716,16 +730,18 @@ hb_ot_layout_lookup_collect_glyphs (hb_f
+ 
+ hb_bool_t
+ hb_ot_layout_has_substitution (hb_face_t *face)
+ {
+   return &_get_gsub (face) != &OT::Null(OT::GSUB);
+ }
+ 
+ /**
++ * hb_ot_layout_lookup_would_substitute:
++ *
+  * Since: 0.9.7
+  **/
+ hb_bool_t
+ hb_ot_layout_lookup_would_substitute (hb_face_t            *face,
+ 				      unsigned int          lookup_index,
+ 				      const hb_codepoint_t *glyphs,
+ 				      unsigned int          glyphs_length,
+ 				      hb_bool_t             zero_context)
+@@ -737,17 +753,17 @@ hb_ot_layout_lookup_would_substitute (hb
+ hb_bool_t
+ hb_ot_layout_lookup_would_substitute_fast (hb_face_t            *face,
+ 					   unsigned int          lookup_index,
+ 					   const hb_codepoint_t *glyphs,
+ 					   unsigned int          glyphs_length,
+ 					   hb_bool_t             zero_context)
+ {
+   if (unlikely (lookup_index >= hb_ot_layout_from_face (face)->gsub_lookup_count)) return false;
+-  OT::hb_would_apply_context_t c (face, glyphs, glyphs_length, zero_context);
++  OT::hb_would_apply_context_t c (face, glyphs, glyphs_length, (bool) zero_context);
+ 
+   const OT::SubstLookup& l = hb_ot_layout_from_face (face)->gsub->get_lookup (lookup_index);
+ 
+   return l.would_apply (&c, &hb_ot_layout_from_face (face)->gsub_accels[lookup_index]);
+ }
+ 
+ void
+ hb_ot_layout_substitute_start (hb_font_t *font, hb_buffer_t *buffer)
+@@ -757,16 +773,18 @@ hb_ot_layout_substitute_start (hb_font_t
+ 
+ void
+ hb_ot_layout_substitute_finish (hb_font_t *font, hb_buffer_t *buffer)
+ {
+   OT::GSUB::substitute_finish (font, buffer);
+ }
+ 
+ /**
++ * hb_ot_layout_lookup_substitute_closure:
++ *
+  * Since: 0.9.7
+  **/
+ void
+ hb_ot_layout_lookup_substitute_closure (hb_face_t    *face,
+ 				        unsigned int  lookup_index,
+ 				        hb_set_t     *glyphs)
+ {
+   OT::hb_closure_context_t c (face, glyphs);
+@@ -794,16 +812,18 @@ hb_ot_layout_position_start (hb_font_t *
+ 
+ void
+ hb_ot_layout_position_finish (hb_font_t *font, hb_buffer_t *buffer)
+ {
+   OT::GPOS::position_finish (font, buffer);
+ }
+ 
+ /**
++ * hb_ot_layout_get_size_params:
++ *
+  * Since: 0.9.10
+  **/
+ hb_bool_t
+ hb_ot_layout_get_size_params (hb_face_t    *face,
+ 			      unsigned int *design_size,       /* OUT.  May be NULL */
+ 			      unsigned int *subfamily_id,      /* OUT.  May be NULL */
+ 			      unsigned int *subfamily_name_id, /* OUT.  May be NULL */
+ 			      unsigned int *range_start,       /* OUT.  May be NULL */
+@@ -1003,35 +1023,25 @@ inline void hb_ot_map_t::apply (const Pr
+   unsigned int i = 0;
+   OT::hb_apply_context_t c (table_index, font, buffer);
+   c.set_recurse_func (Proxy::Lookup::apply_recurse_func);
+ 
+   for (unsigned int stage_index = 0; stage_index < stages[table_index].len; stage_index++) {
+     const stage_map_t *stage = &stages[table_index][stage_index];
+     for (; i < stage->last_lookup; i++)
+     {
+-#if 0
+-      char buf[4096];
+-      hb_buffer_serialize_glyphs (buffer, 0, buffer->len,
+-				  buf, sizeof (buf), NULL,
+-				  font,
+-				  HB_BUFFER_SERIALIZE_FORMAT_TEXT,
+-				  Proxy::table_index == 0 ?
+-				  HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS :
+-				  HB_BUFFER_SERIALIZE_FLAG_DEFAULT);
+-      printf ("buf: [%s]\n", buf);
+-#endif
+-
+       unsigned int lookup_index = lookups[table_index][i].index;
++      if (!buffer->message (font, "start lookup %d", lookup_index)) continue;
+       c.set_lookup_index (lookup_index);
+       c.set_lookup_mask (lookups[table_index][i].mask);
+       c.set_auto_zwj (lookups[table_index][i].auto_zwj);
+       apply_string<Proxy> (&c,
+ 			   proxy.table.get_lookup (lookup_index),
+ 			   proxy.accels[lookup_index]);
++      (void) buffer->message (font, "end lookup %d", lookup_index);
+     }
+ 
+     if (stage->pause_func)
+     {
+       buffer->clear_output ();
+       stage->pause_func (plan, font, buffer);
+     }
+   }
+diff --git a/gfx/harfbuzz/src/hb-ot-layout.h b/gfx/harfbuzz/src/hb-ot-layout.h
+--- a/gfx/harfbuzz/src/hb-ot-layout.h
++++ b/gfx/harfbuzz/src/hb-ot-layout.h
+@@ -43,170 +43,170 @@ HB_BEGIN_DECLS
+ #define HB_OT_TAG_GPOS HB_TAG('G','P','O','S')
+ #define HB_OT_TAG_JSTF HB_TAG('J','S','T','F')
+ 
+ 
+ /*
+  * GDEF
+  */
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_ot_layout_has_glyph_classes (hb_face_t *face);
+ 
+ typedef enum {
+   HB_OT_LAYOUT_GLYPH_CLASS_UNCLASSIFIED	= 0,
+   HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH	= 1,
+   HB_OT_LAYOUT_GLYPH_CLASS_LIGATURE	= 2,
+   HB_OT_LAYOUT_GLYPH_CLASS_MARK		= 3,
+   HB_OT_LAYOUT_GLYPH_CLASS_COMPONENT	= 4
+ } hb_ot_layout_glyph_class_t;
+ 
+-hb_ot_layout_glyph_class_t
++HB_EXTERN hb_ot_layout_glyph_class_t
+ hb_ot_layout_get_glyph_class (hb_face_t      *face,
+ 			      hb_codepoint_t  glyph);
+ 
+-void
++HB_EXTERN void
+ hb_ot_layout_get_glyphs_in_class (hb_face_t                  *face,
+ 				  hb_ot_layout_glyph_class_t  klass,
+ 				  hb_set_t                   *glyphs /* OUT */);
+ 
+ 
+ /* Not that useful.  Provides list of attach points for a glyph that a
+  * client may want to cache */
+-unsigned int
++HB_EXTERN unsigned int
+ hb_ot_layout_get_attach_points (hb_face_t      *face,
+ 				hb_codepoint_t  glyph,
+ 				unsigned int    start_offset,
+ 				unsigned int   *point_count /* IN/OUT */,
+ 				unsigned int   *point_array /* OUT */);
+ 
+ /* Ligature caret positions */
+-unsigned int
++HB_EXTERN unsigned int
+ hb_ot_layout_get_ligature_carets (hb_font_t      *font,
+ 				  hb_direction_t  direction,
+ 				  hb_codepoint_t  glyph,
+ 				  unsigned int    start_offset,
+ 				  unsigned int   *caret_count /* IN/OUT */,
+ 				  hb_position_t  *caret_array /* OUT */);
+ 
+ 
+ /*
+  * GSUB/GPOS feature query and enumeration interface
+  */
+ 
+ #define HB_OT_LAYOUT_NO_SCRIPT_INDEX		0xFFFFu
+ #define HB_OT_LAYOUT_NO_FEATURE_INDEX		0xFFFFu
+ #define HB_OT_LAYOUT_DEFAULT_LANGUAGE_INDEX	0xFFFFu
+ 
+-unsigned int
++HB_EXTERN unsigned int
+ hb_ot_layout_table_get_script_tags (hb_face_t    *face,
+ 				    hb_tag_t      table_tag,
+ 				    unsigned int  start_offset,
+ 				    unsigned int *script_count /* IN/OUT */,
+ 				    hb_tag_t     *script_tags /* OUT */);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_ot_layout_table_find_script (hb_face_t    *face,
+ 				hb_tag_t      table_tag,
+ 				hb_tag_t      script_tag,
+ 				unsigned int *script_index);
+ 
+ /* Like find_script, but takes zero-terminated array of scripts to test */
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_ot_layout_table_choose_script (hb_face_t      *face,
+ 				  hb_tag_t        table_tag,
+ 				  const hb_tag_t *script_tags,
+ 				  unsigned int   *script_index,
+ 				  hb_tag_t       *chosen_script);
+ 
+-unsigned int
++HB_EXTERN unsigned int
+ hb_ot_layout_table_get_feature_tags (hb_face_t    *face,
+ 				     hb_tag_t      table_tag,
+ 				     unsigned int  start_offset,
+ 				     unsigned int *feature_count /* IN/OUT */,
+ 				     hb_tag_t     *feature_tags /* OUT */);
+ 
+-unsigned int
++HB_EXTERN unsigned int
+ hb_ot_layout_script_get_language_tags (hb_face_t    *face,
+ 				       hb_tag_t      table_tag,
+ 				       unsigned int  script_index,
+ 				       unsigned int  start_offset,
+ 				       unsigned int *language_count /* IN/OUT */,
+ 				       hb_tag_t     *language_tags /* OUT */);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_ot_layout_script_find_language (hb_face_t    *face,
+ 				   hb_tag_t      table_tag,
+ 				   unsigned int  script_index,
+ 				   hb_tag_t      language_tag,
+ 				   unsigned int *language_index);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_ot_layout_language_get_required_feature_index (hb_face_t    *face,
+ 						  hb_tag_t      table_tag,
+ 						  unsigned int  script_index,
+ 						  unsigned int  language_index,
+ 						  unsigned int *feature_index);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_ot_layout_language_get_required_feature (hb_face_t    *face,
+ 					    hb_tag_t      table_tag,
+ 					    unsigned int  script_index,
+ 					    unsigned int  language_index,
+ 					    unsigned int *feature_index,
+ 					    hb_tag_t     *feature_tag);
+ 
+-unsigned int
++HB_EXTERN unsigned int
+ hb_ot_layout_language_get_feature_indexes (hb_face_t    *face,
+ 					   hb_tag_t      table_tag,
+ 					   unsigned int  script_index,
+ 					   unsigned int  language_index,
+ 					   unsigned int  start_offset,
+ 					   unsigned int *feature_count /* IN/OUT */,
+ 					   unsigned int *feature_indexes /* OUT */);
+ 
+-unsigned int
++HB_EXTERN unsigned int
+ hb_ot_layout_language_get_feature_tags (hb_face_t    *face,
+ 					hb_tag_t      table_tag,
+ 					unsigned int  script_index,
+ 					unsigned int  language_index,
+ 					unsigned int  start_offset,
+ 					unsigned int *feature_count /* IN/OUT */,
+ 					hb_tag_t     *feature_tags /* OUT */);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_ot_layout_language_find_feature (hb_face_t    *face,
+ 				    hb_tag_t      table_tag,
+ 				    unsigned int  script_index,
+ 				    unsigned int  language_index,
+ 				    hb_tag_t      feature_tag,
+ 				    unsigned int *feature_index);
+ 
+-unsigned int
++HB_EXTERN unsigned int
+ hb_ot_layout_feature_get_lookups (hb_face_t    *face,
+ 				  hb_tag_t      table_tag,
+ 				  unsigned int  feature_index,
+ 				  unsigned int  start_offset,
+ 				  unsigned int *lookup_count /* IN/OUT */,
+ 				  unsigned int *lookup_indexes /* OUT */);
+ 
+-unsigned int
++HB_EXTERN unsigned int
+ hb_ot_layout_table_get_lookup_count (hb_face_t    *face,
+ 				     hb_tag_t      table_tag);
+ 
+ 
+-void
++HB_EXTERN void
+ hb_ot_layout_collect_lookups (hb_face_t      *face,
+ 			      hb_tag_t        table_tag,
+ 			      const hb_tag_t *scripts,
+ 			      const hb_tag_t *languages,
+ 			      const hb_tag_t *features,
+ 			      hb_set_t       *lookup_indexes /* OUT */);
+ 
+-void
++HB_EXTERN void
+ hb_ot_layout_lookup_collect_glyphs (hb_face_t    *face,
+ 				    hb_tag_t      table_tag,
+ 				    unsigned int  lookup_index,
+ 				    hb_set_t     *glyphs_before, /* OUT. May be NULL */
+ 				    hb_set_t     *glyphs_input,  /* OUT. May be NULL */
+ 				    hb_set_t     *glyphs_after,  /* OUT. May be NULL */
+ 				    hb_set_t     *glyphs_output  /* OUT. May be NULL */);
+ 
+@@ -223,77 +223,77 @@ typedef struct
+ 
+ typedef hb_bool_t
+ (*hb_ot_layout_glyph_sequence_func_t) (hb_font_t    *font,
+ 				       hb_tag_t      table_tag,
+ 				       unsigned int  lookup_index,
+ 				       const hb_ot_layout_glyph_sequence_t *sequence,
+ 				       void         *user_data);
+ 
+-void
++HB_EXTERN void
+ Xhb_ot_layout_lookup_enumerate_sequences (hb_face_t    *face,
+ 					 hb_tag_t      table_tag,
+ 					 unsigned int  lookup_index,
+ 					 hb_ot_layout_glyph_sequence_func_t callback,
+ 					 void         *user_data);
+ #endif
+ 
+ 
+ /*
+  * GSUB
+  */
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_ot_layout_has_substitution (hb_face_t *face);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_ot_layout_lookup_would_substitute (hb_face_t            *face,
+ 				      unsigned int          lookup_index,
+ 				      const hb_codepoint_t *glyphs,
+ 				      unsigned int          glyphs_length,
+ 				      hb_bool_t             zero_context);
+ 
+-void
++HB_EXTERN void
+ hb_ot_layout_lookup_substitute_closure (hb_face_t    *face,
+ 				        unsigned int  lookup_index,
+ 				        hb_set_t     *glyphs
+ 					/*TODO , hb_bool_t  inclusive */);
+ 
+ #ifdef HB_NOT_IMPLEMENTED
+ /* Note: You better have GDEF when using this API, or marks won't do much. */
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ Xhb_ot_layout_lookup_substitute (hb_font_t            *font,
+ 				unsigned int          lookup_index,
+ 				const hb_ot_layout_glyph_sequence_t *sequence,
+ 				unsigned int          out_size,
+ 				hb_codepoint_t       *glyphs_out,   /* OUT */
+ 				unsigned int         *clusters_out, /* OUT */
+ 				unsigned int         *out_length    /* OUT */);
+ #endif
+ 
+ 
+ /*
+  * GPOS
+  */
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_ot_layout_has_positioning (hb_face_t *face);
+ 
+ #ifdef HB_NOT_IMPLEMENTED
+ /* Note: You better have GDEF when using this API, or marks won't do much. */
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ Xhb_ot_layout_lookup_position (hb_font_t            *font,
+ 			      unsigned int          lookup_index,
+ 			      const hb_ot_layout_glyph_sequence_t *sequence,
+ 			      hb_glyph_position_t  *positions /* IN / OUT */);
+ #endif
+ 
+ /* Optical 'size' feature info.  Returns true if found.
+  * http://www.microsoft.com/typography/otspec/features_pt.htm#size */
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_ot_layout_get_size_params (hb_face_t    *face,
+ 			      unsigned int *design_size,       /* OUT.  May be NULL */
+ 			      unsigned int *subfamily_id,      /* OUT.  May be NULL */
+ 			      unsigned int *subfamily_name_id, /* OUT.  May be NULL */
+ 			      unsigned int *range_start,       /* OUT.  May be NULL */
+ 			      unsigned int *range_end          /* OUT.  May be NULL */);
+ 
+ 
+diff --git a/gfx/harfbuzz/src/hb-ot-map-private.hh b/gfx/harfbuzz/src/hb-ot-map-private.hh
+--- a/gfx/harfbuzz/src/hb-ot-map-private.hh
++++ b/gfx/harfbuzz/src/hb-ot-map-private.hh
+@@ -198,17 +198,18 @@ struct hb_ot_map_builder_t
+     hb_tag_t tag;
+     unsigned int seq; /* sequence#, used for stable sorting only */
+     unsigned int max_value;
+     hb_ot_map_feature_flags_t flags;
+     unsigned int default_value; /* for non-global features, what should the unset glyphs take */
+     unsigned int stage[2]; /* GSUB/GPOS */
+ 
+     static int cmp (const feature_info_t *a, const feature_info_t *b)
+-    { return (a->tag != b->tag) ?  (a->tag < b->tag ? -1 : 1) : (a->seq < b->seq ? -1 : 1); }
++    { return (a->tag != b->tag) ?  (a->tag < b->tag ? -1 : 1) :
++	     (a->seq < b->seq ? -1 : a->seq > b->seq ? 1 : 0); }
+   };
+ 
+   struct stage_info_t {
+     unsigned int index;
+     hb_ot_map_t::pause_func_t pause_func;
+   };
+ 
+   HB_INTERNAL void add_pause (unsigned int table_index, hb_ot_map_t::pause_func_t pause_func);
+diff --git a/gfx/harfbuzz/src/hb-ot-map.cc b/gfx/harfbuzz/src/hb-ot-map.cc
+--- a/gfx/harfbuzz/src/hb-ot-map.cc
++++ b/gfx/harfbuzz/src/hb-ot-map.cc
+@@ -84,17 +84,17 @@ hb_ot_map_builder_t::hb_ot_map_builder_t
+   hb_tag_t script_tags[3] = {HB_TAG_NONE, HB_TAG_NONE, HB_TAG_NONE};
+   hb_tag_t language_tag;
+ 
+   hb_ot_tags_from_script (props.script, &script_tags[0], &script_tags[1]);
+   language_tag = hb_ot_tag_from_language (props.language);
+ 
+   for (unsigned int table_index = 0; table_index < 2; table_index++) {
+     hb_tag_t table_tag = table_tags[table_index];
+-    found_script[table_index] = hb_ot_layout_table_choose_script (face, table_tag, script_tags, &script_index[table_index], &chosen_script[table_index]);
++    found_script[table_index] = (bool) hb_ot_layout_table_choose_script (face, table_tag, script_tags, &script_index[table_index], &chosen_script[table_index]);
+     hb_ot_layout_script_find_language (face, table_tag, script_index[table_index], language_tag, &language_index[table_index]);
+   }
+ }
+ 
+ void hb_ot_map_builder_t::add_feature (hb_tag_t tag, unsigned int value,
+ 				       hb_ot_map_feature_flags_t flags)
+ {
+   feature_info_t *info = feature_infos.push();
+diff --git a/gfx/harfbuzz/src/hb-ot-os2-table.hh b/gfx/harfbuzz/src/hb-ot-os2-table.hh
+new file mode 100644
+--- /dev/null
++++ b/gfx/harfbuzz/src/hb-ot-os2-table.hh
+@@ -0,0 +1,105 @@
++/*
++ * Copyright © 2011,2012  Google, Inc.
++ *
++ *  This is part of HarfBuzz, a text shaping library.
++ *
++ * Permission is hereby granted, without written agreement and without
++ * license or royalty fees, to use, copy, modify, and distribute this
++ * software and its documentation for any purpose, provided that the
++ * above copyright notice and the following two paragraphs appear in
++ * all copies of this software.
++ *
++ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
++ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
++ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
++ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
++ * DAMAGE.
++ *
++ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
++ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
++ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
++ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
++ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
++ *
++ * Google Author(s): Behdad Esfahbod
++ */
++
++#ifndef HB_OT_OS2_TABLE_HH
++#define HB_OT_OS2_TABLE_HH
++
++#include "hb-open-type-private.hh"
++
++
++namespace OT {
++
++/*
++ * OS/2 and Windows Metrics
++ * http://www.microsoft.com/typography/otspec/os2.htm
++ */
++
++#define HB_OT_TAG_os2 HB_TAG('O','S','/','2')
++
++struct os2
++{
++  static const hb_tag_t tableTag = HB_OT_TAG_os2;
++
++  inline bool sanitize (hb_sanitize_context_t *c) const
++  {
++    TRACE_SANITIZE (this);
++    return_trace (c->check_struct (this));
++  }
++
++  public:
++  USHORT	version;
++
++  /* Version 0 */
++  SHORT		xAvgCharWidth;
++  USHORT	usWeightClass;
++  USHORT	usWidthClass;
++  USHORT	fsType;
++  SHORT		ySubscriptXSize;
++  SHORT		ySubscriptYSize;
++  SHORT		ySubscriptXOffset;
++  SHORT		ySubscriptYOffset;
++  SHORT		ySuperscriptXSize;
++  SHORT		ySuperscriptYSize;
++  SHORT		ySuperscriptXOffset;
++  SHORT		ySuperscriptYOffset;
++  SHORT		yStrikeoutSize;
++  SHORT		yStrikeoutPosition;
++  SHORT		sFamilyClass;
++  BYTE		panose[10];
++  ULONG		ulUnicodeRange[4];
++  Tag		achVendID;
++  USHORT	fsSelection;
++  USHORT	usFirstCharIndex;
++  USHORT	usLastCharIndex;
++  SHORT		sTypoAscender;
++  SHORT		sTypoDescender;
++  SHORT		sTypoLineGap;
++  USHORT	usWinAscent;
++  USHORT	usWinDescent;
++
++  /* Version 1 */
++  //ULONG ulCodePageRange1;
++  //ULONG ulCodePageRange2;
++
++  /* Version 2 */
++  //SHORT sxHeight;
++  //SHORT sCapHeight;
++  //USHORT  usDefaultChar;
++  //USHORT  usBreakChar;
++  //USHORT  usMaxContext;
++
++  /* Version 5 */
++  //USHORT  usLowerOpticalPointSize;
++  //USHORT  usUpperOpticalPointSize;
++
++  public:
++  DEFINE_SIZE_STATIC (78);
++};
++
++} /* namespace OT */
++
++
++#endif /* HB_OT_OS2_TABLE_HH */
+diff --git a/gfx/harfbuzz/src/hb-ot-shape-complex-arabic.cc b/gfx/harfbuzz/src/hb-ot-shape-complex-arabic.cc
+--- a/gfx/harfbuzz/src/hb-ot-shape-complex-arabic.cc
++++ b/gfx/harfbuzz/src/hb-ot-shape-complex-arabic.cc
+@@ -218,26 +218,26 @@ collect_features_arabic (hb_ot_shape_pla
+     map->add_gsub_pause (NULL);
+   }
+ 
+   map->add_feature (HB_TAG('r','l','i','g'), 1, F_GLOBAL|F_HAS_FALLBACK);
+   if (plan->props.script == HB_SCRIPT_ARABIC)
+     map->add_gsub_pause (arabic_fallback_shape);
+ 
+   map->add_global_bool_feature (HB_TAG('c','a','l','t'));
+-  map->add_gsub_pause (NULL);
+ 
+   /* The spec includes 'cswh'.  Earlier versions of Windows
+    * used to enable this by default, but testing suggests
+    * that Windows 8 and later do not enable it by default,
+    * and spec now says 'Off by default'.
+    * We disabled this in ae23c24c32.
+    * Note that IranNastaliq uses this feature extensively
+    * to fixup broken glyph sequences.  Oh well...
+    * Test case: U+0643,U+0640,U+0631. */
++  //map->add_gsub_pause (NULL);
+   //map->add_global_bool_feature (HB_TAG('c','s','w','h'));
+   map->add_global_bool_feature (HB_TAG('m','s','e','t'));
+ }
+ 
+ #include "hb-ot-shape-complex-arabic-fallback.hh"
+ 
+ struct arabic_shape_plan_t
+ {
+@@ -458,20 +458,16 @@ apply_stch (const hb_ot_shape_plan_t *pl
+    * stretch / position the stretched pieces to the left / preceding glyphs. */
+ 
+   /* We do a two pass implementation:
+    * First pass calculates the exact number of extra glyphs we need,
+    * We then enlarge buffer to have that much room,
+    * Second pass applies the stretch, copying things to the end of buffer.
+    */
+ 
+-  /* 30 = 2048 / 70.
+-   * https://www.microsoft.com/typography/cursivescriptguidelines.mspx */
+-  hb_position_t overlap = font->x_scale / 30;
+-  DEBUG_MSG (ARABIC, NULL, "overlap for stretching is %d", overlap);
+   int sign = font->x_scale < 0 ? -1 : +1;
+   unsigned int extra_glyphs_needed = 0; // Set during MEASURE, used during CUT
+   typedef enum { MEASURE, CUT } step_t;
+ 
+   for (step_t step = MEASURE; step <= CUT; step = (step_t) (step + 1))
+   {
+     unsigned int count = buffer->len;
+     hb_glyph_info_t *info = buffer->info;
+@@ -499,28 +495,25 @@ apply_stch (const hb_ot_shape_plan_t *pl
+       int n_fixed = 0;
+       int n_repeating = 0;
+ 
+       unsigned int end = i;
+       while (i &&
+ 	     hb_in_range<unsigned> (info[i - 1].arabic_shaping_action(), STCH_FIXED, STCH_REPEATING))
+       {
+ 	i--;
+-	hb_glyph_extents_t extents;
+-	if (!font->get_glyph_extents (info[i].codepoint, &extents))
+-	  extents.width = 0;
+-	extents.width -= overlap;
++	hb_position_t width = font->get_glyph_h_advance (info[i].codepoint);
+ 	if (info[i].arabic_shaping_action() == STCH_FIXED)
+ 	{
+-	  w_fixed += extents.width;
++	  w_fixed += width;
+ 	  n_fixed++;
+ 	}
+ 	else
+ 	{
+-	  w_repeating += extents.width;
++	  w_repeating += width;
+ 	  n_repeating++;
+ 	}
+       }
+       unsigned int start = i;
+       unsigned int context = i;
+       while (context &&
+ 	     !hb_in_range<unsigned> (info[context - 1].arabic_shaping_action(), STCH_FIXED, STCH_REPEATING) &&
+ 	     (_hb_glyph_info_is_default_ignorable (&info[context - 1]) ||
+@@ -535,44 +528,54 @@ apply_stch (const hb_ot_shape_plan_t *pl
+ 		 step == MEASURE ? "measuring" : "cutting", context, start, end);
+       DEBUG_MSG (ARABIC, NULL, "rest of word:    count=%d width %d", start - context, w_total);
+       DEBUG_MSG (ARABIC, NULL, "fixed tiles:     count=%d width=%d", n_fixed, w_fixed);
+       DEBUG_MSG (ARABIC, NULL, "repeating tiles: count=%d width=%d", n_repeating, w_repeating);
+ 
+       /* Number of additional times to repeat each repeating tile. */
+       int n_copies = 0;
+ 
+-      hb_position_t w_remaining = w_total - w_fixed - overlap;
++      hb_position_t w_remaining = w_total - w_fixed;
+       if (sign * w_remaining > sign * w_repeating && sign * w_repeating > 0)
+-	n_copies = (sign * w_remaining + sign * w_repeating / 4) / (sign * w_repeating) - 1;
++	n_copies = (sign * w_remaining) / (sign * w_repeating) - 1;
++
++      /* See if we can improve the fit by adding an extra repeat and squeezing them together a bit. */
++      hb_position_t extra_repeat_overlap = 0;
++      hb_position_t shortfall = sign * w_remaining - sign * w_repeating * (n_copies + 1);
++      if (shortfall > 0)
++      {
++        ++n_copies;
++        hb_position_t excess = (n_copies + 1) * sign * w_repeating - sign * w_remaining;
++        if (excess > 0)
++          extra_repeat_overlap = excess / (n_copies * n_repeating);
++      }
+ 
+       if (step == MEASURE)
+       {
+ 	extra_glyphs_needed += n_copies * n_repeating;
+ 	DEBUG_MSG (ARABIC, NULL, "will add extra %d copies of repeating tiles", n_copies);
+       }
+       else
+       {
+-        hb_position_t x_offset = -overlap;
++	hb_position_t x_offset = 0;
+ 	for (unsigned int k = end; k > start; k--)
+ 	{
+-	  hb_glyph_extents_t extents;
+-	  if (!font->get_glyph_extents (info[k - 1].codepoint, &extents))
+-	    extents.width = 0;
+-	  extents.width -= overlap;
++	  hb_position_t width = font->get_glyph_h_advance (info[k - 1].codepoint);
+ 
+ 	  unsigned int repeat = 1;
+ 	  if (info[k - 1].arabic_shaping_action() == STCH_REPEATING)
+ 	    repeat += n_copies;
+ 
+ 	  DEBUG_MSG (ARABIC, NULL, "appending %d copies of glyph %d; j=%d",
+ 		     repeat, info[k - 1].codepoint, j);
+ 	  for (unsigned int n = 0; n < repeat; n++)
+ 	  {
+-	    x_offset -= extents.width;
++	    x_offset -= width;
++	    if (n > 0)
++	      x_offset += extra_repeat_overlap;
+ 	    pos[k - 1].x_offset = x_offset;
+ 	    /* Append copy. */
+ 	    --j;
+ 	    info[j] = info[k - 1];
+ 	    pos[j] = pos[k - 1];
+ 	  }
+ 	}
+       }
+diff --git a/gfx/harfbuzz/src/hb-ot-shape-complex-default.cc b/gfx/harfbuzz/src/hb-ot-shape-complex-default.cc
+--- a/gfx/harfbuzz/src/hb-ot-shape-complex-default.cc
++++ b/gfx/harfbuzz/src/hb-ot-shape-complex-default.cc
+@@ -35,11 +35,11 @@ const hb_ot_complex_shaper_t _hb_ot_comp
+   NULL, /* data_create */
+   NULL, /* data_destroy */
+   NULL, /* preprocess_text */
+   NULL, /* postprocess_glyphs */
+   HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT,
+   NULL, /* decompose */
+   NULL, /* compose */
+   NULL, /* setup_masks */
+-  HB_OT_SHAPE_ZERO_WIDTH_MARKS_DEFAULT,
++  HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_UNICODE_LATE,
+   true, /* fallback_position */
+ };
+diff --git a/gfx/harfbuzz/src/hb-ot-shape-complex-hebrew.cc b/gfx/harfbuzz/src/hb-ot-shape-complex-hebrew.cc
+--- a/gfx/harfbuzz/src/hb-ot-shape-complex-hebrew.cc
++++ b/gfx/harfbuzz/src/hb-ot-shape-complex-hebrew.cc
+@@ -63,17 +63,17 @@ compose_hebrew (const hb_ot_shape_normal
+     0x0000u, /* FINAL TSADI */
+     0xFB46u, /* TSADI */
+     0xFB47u, /* QOF */
+     0xFB48u, /* RESH */
+     0xFB49u, /* SHIN */
+     0xFB4Au /* TAV */
+   };
+ 
+-  bool found = c->unicode->compose (a, b, ab);
++  bool found = (bool) c->unicode->compose (a, b, ab);
+ 
+   if (!found && !c->plan->has_mark)
+   {
+       /* Special-case Hebrew presentation forms that are excluded from
+        * standard normalization, but wanted for old fonts. */
+       switch (b) {
+       case 0x05B4u: /* HIRIQ */
+ 	  if (a == 0x05D9u) { /* YOD */
+diff --git a/gfx/harfbuzz/src/hb-ot-shape-complex-indic-private.hh b/gfx/harfbuzz/src/hb-ot-shape-complex-indic-private.hh
+--- a/gfx/harfbuzz/src/hb-ot-shape-complex-indic-private.hh
++++ b/gfx/harfbuzz/src/hb-ot-shape-complex-indic-private.hh
+@@ -104,37 +104,41 @@ enum indic_position_t {
+ };
+ 
+ /* Categories used in IndicSyllabicCategory.txt from UCD. */
+ enum indic_syllabic_category_t {
+   INDIC_SYLLABIC_CATEGORY_OTHER				= OT_X,
+ 
+   INDIC_SYLLABIC_CATEGORY_AVAGRAHA			= OT_Symbol,
+   INDIC_SYLLABIC_CATEGORY_BINDU				= OT_SM,
+-  INDIC_SYLLABIC_CATEGORY_BRAHMI_JOINING_NUMBER		= OT_PLACEHOLDER, /* TODO */
++  INDIC_SYLLABIC_CATEGORY_BRAHMI_JOINING_NUMBER		= OT_PLACEHOLDER, /* Don't care. */
+   INDIC_SYLLABIC_CATEGORY_CANTILLATION_MARK		= OT_A,
+   INDIC_SYLLABIC_CATEGORY_CONSONANT			= OT_C,
+   INDIC_SYLLABIC_CATEGORY_CONSONANT_DEAD		= OT_C,
+   INDIC_SYLLABIC_CATEGORY_CONSONANT_FINAL		= OT_CM,
+   INDIC_SYLLABIC_CATEGORY_CONSONANT_HEAD_LETTER		= OT_C,
++  INDIC_SYLLABIC_CATEGORY_CONSONANT_KILLER		= OT_M, /* U+17CD only. */
+   INDIC_SYLLABIC_CATEGORY_CONSONANT_MEDIAL		= OT_CM,
+   INDIC_SYLLABIC_CATEGORY_CONSONANT_PLACEHOLDER		= OT_PLACEHOLDER,
+   INDIC_SYLLABIC_CATEGORY_CONSONANT_PRECEDING_REPHA	= OT_Repha,
++  INDIC_SYLLABIC_CATEGORY_CONSONANT_PREFIXED		= OT_X, /* Don't care. */
+   INDIC_SYLLABIC_CATEGORY_CONSONANT_SUBJOINED		= OT_CM,
+   INDIC_SYLLABIC_CATEGORY_CONSONANT_SUCCEEDING_REPHA	= OT_N,
++  INDIC_SYLLABIC_CATEGORY_CONSONANT_WITH_STACKER	= OT_Repha, /* TODO */
+   INDIC_SYLLABIC_CATEGORY_GEMINATION_MARK		= OT_SM,
+-  INDIC_SYLLABIC_CATEGORY_INVISIBLE_STACKER		= OT_H, /* TODO */
++  INDIC_SYLLABIC_CATEGORY_INVISIBLE_STACKER		= OT_Coeng,
+   INDIC_SYLLABIC_CATEGORY_JOINER			= OT_ZWJ,
+   INDIC_SYLLABIC_CATEGORY_MODIFYING_LETTER		= OT_X,
+   INDIC_SYLLABIC_CATEGORY_NON_JOINER			= OT_ZWNJ,
+   INDIC_SYLLABIC_CATEGORY_NUKTA				= OT_N,
+   INDIC_SYLLABIC_CATEGORY_NUMBER			= OT_PLACEHOLDER,
+-  INDIC_SYLLABIC_CATEGORY_NUMBER_JOINER			= OT_PLACEHOLDER, /* TODO */
+-  INDIC_SYLLABIC_CATEGORY_PURE_KILLER			= OT_H, /* TODO */
++  INDIC_SYLLABIC_CATEGORY_NUMBER_JOINER			= OT_PLACEHOLDER, /* Don't care. */
++  INDIC_SYLLABIC_CATEGORY_PURE_KILLER			= OT_M, /* Is like a vowel matra. */
+   INDIC_SYLLABIC_CATEGORY_REGISTER_SHIFTER		= OT_RS,
++  INDIC_SYLLABIC_CATEGORY_SYLLABLE_MODIFIER		= OT_M, /* Misc Khmer signs. */
+   INDIC_SYLLABIC_CATEGORY_TONE_LETTER			= OT_X,
+   INDIC_SYLLABIC_CATEGORY_TONE_MARK			= OT_N,
+   INDIC_SYLLABIC_CATEGORY_VIRAMA			= OT_H,
+   INDIC_SYLLABIC_CATEGORY_VISARGA			= OT_SM,
+   INDIC_SYLLABIC_CATEGORY_VOWEL				= OT_V,
+   INDIC_SYLLABIC_CATEGORY_VOWEL_DEPENDENT		= OT_M,
+   INDIC_SYLLABIC_CATEGORY_VOWEL_INDEPENDENT		= OT_V
+ };
+@@ -157,24 +161,30 @@ enum indic_matra_category_t {
+   INDIC_MATRA_CATEGORY_TOP_AND_LEFT_AND_RIGHT		= INDIC_MATRA_CATEGORY_RIGHT,
+   INDIC_MATRA_CATEGORY_TOP_AND_RIGHT			= INDIC_MATRA_CATEGORY_RIGHT,
+ 
+   INDIC_MATRA_CATEGORY_OVERSTRUCK			= POS_AFTER_MAIN,
+   INDIC_MATRA_CATEGORY_VISUAL_ORDER_LEFT		= POS_PRE_M
+ };
+ 
+ #define INDIC_COMBINE_CATEGORIES(S,M) \
+-  (ASSERT_STATIC_EXPR_ZERO (M == INDIC_MATRA_CATEGORY_NOT_APPLICABLE || \
+-			    ( \
+-			     S == INDIC_SYLLABIC_CATEGORY_CONSONANT_MEDIAL || \
+-			     S == INDIC_SYLLABIC_CATEGORY_GEMINATION_MARK || \
+-			     S == INDIC_SYLLABIC_CATEGORY_REGISTER_SHIFTER || \
+-			     S == INDIC_SYLLABIC_CATEGORY_CONSONANT_SUCCEEDING_REPHA || \
+-			     S == INDIC_SYLLABIC_CATEGORY_VIRAMA || \
+-			     S == INDIC_SYLLABIC_CATEGORY_VOWEL_DEPENDENT || \
+-			     false)) + \
+-   ASSERT_STATIC_EXPR_ZERO (S < 255 && M < 255) + \
+-   ((M << 8) | S))
++  ( \
++    ASSERT_STATIC_EXPR_ZERO (S < 255 && M < 255) + \
++    ( S | \
++     ( \
++      ( \
++       S == INDIC_SYLLABIC_CATEGORY_CONSONANT_MEDIAL || \
++       S == INDIC_SYLLABIC_CATEGORY_GEMINATION_MARK || \
++       S == INDIC_SYLLABIC_CATEGORY_REGISTER_SHIFTER || \
++       S == INDIC_SYLLABIC_CATEGORY_CONSONANT_SUCCEEDING_REPHA || \
++       S == INDIC_SYLLABIC_CATEGORY_VIRAMA || \
++       S == INDIC_SYLLABIC_CATEGORY_VOWEL_DEPENDENT || \
++       false \
++       ? M : INDIC_MATRA_CATEGORY_NOT_APPLICABLE \
++      ) << 8 \
++     ) \
++    ) \
++   )
+ 
+ HB_INTERNAL INDIC_TABLE_ELEMENT_TYPE
+ hb_indic_get_categories (hb_codepoint_t u);
+ 
+ #endif /* HB_OT_SHAPE_COMPLEX_INDIC_PRIVATE_HH */
+diff --git a/gfx/harfbuzz/src/hb-ot-shape-complex-indic-table.cc b/gfx/harfbuzz/src/hb-ot-shape-complex-indic-table.cc
+--- a/gfx/harfbuzz/src/hb-ot-shape-complex-indic-table.cc
++++ b/gfx/harfbuzz/src/hb-ot-shape-complex-indic-table.cc
+@@ -1,315 +1,323 @@
+ /* == Start of generated table == */
+ /*
+  * The following table is generated by running:
+  *
+  *   ./gen-indic-table.py IndicSyllabicCategory.txt IndicMatraCategory.txt Blocks.txt
+  *
+  * on files with these headers:
+  *
+- * # IndicSyllabicCategory-7.0.0.txt
+- * # Date: 2014-06-03, 07:00:00 GMT [KW, LI, AG, RP]
+- * # IndicMatraCategory-7.0.0.txt
+- * # Date: 2014-06-03, 07:00:00 GMT [KW, LI, AG, RP]
+- * # Blocks-7.0.0.txt
+- * # Date: 2014-04-03, 23:23:00 GMT [RP, KW]
++ * # IndicSyllabicCategory-8.0.0.txt
++ * # Date: 2015-05-12, 10:00:00 GMT [RP, KW, LI]
++ * # IndicPositionalCategory-8.0.0.txt
++ * # Date: 2015-05-12, 10:00:00 GMT [RP, KW, LI]
++ * # Blocks-8.0.0.txt
++ * # Date: 2014-11-10, 23:04:00 GMT [KW]
+  */
+ 
+ #include "hb-ot-shape-complex-indic-private.hh"
+ 
+ 
+ #define ISC_A	INDIC_SYLLABIC_CATEGORY_AVAGRAHA		/*  13 chars; Avagraha */
+-#define ISC_Bi	INDIC_SYLLABIC_CATEGORY_BINDU			/*  59 chars; Bindu */
++#define ISC_Bi	INDIC_SYLLABIC_CATEGORY_BINDU			/*  60 chars; Bindu */
+ #define ISC_BJN	INDIC_SYLLABIC_CATEGORY_BRAHMI_JOINING_NUMBER	/*  20 chars; Brahmi_Joining_Number */
+-#define ISC_Ca	INDIC_SYLLABIC_CATEGORY_CANTILLATION_MARK	/*  30 chars; Cantillation_Mark */
+-#define ISC_C	INDIC_SYLLABIC_CATEGORY_CONSONANT		/* 1744 chars; Consonant */
++#define ISC_Ca	INDIC_SYLLABIC_CATEGORY_CANTILLATION_MARK	/*  52 chars; Cantillation_Mark */
++#define ISC_C	INDIC_SYLLABIC_CATEGORY_CONSONANT		/* 1805 chars; Consonant */
+ #define ISC_CD	INDIC_SYLLABIC_CATEGORY_CONSONANT_DEAD		/*   7 chars; Consonant_Dead */
+-#define ISC_CF	INDIC_SYLLABIC_CATEGORY_CONSONANT_FINAL		/*  61 chars; Consonant_Final */
++#define ISC_CF	INDIC_SYLLABIC_CATEGORY_CONSONANT_FINAL		/*  62 chars; Consonant_Final */
+ #define ISC_CHL	INDIC_SYLLABIC_CATEGORY_CONSONANT_HEAD_LETTER	/*   5 chars; Consonant_Head_Letter */
+-#define ISC_CM	INDIC_SYLLABIC_CATEGORY_CONSONANT_MEDIAL	/*  19 chars; Consonant_Medial */
+-#define ISC_CP	INDIC_SYLLABIC_CATEGORY_CONSONANT_PLACEHOLDER	/*  11 chars; Consonant_Placeholder */
++#define ISC_CK	INDIC_SYLLABIC_CATEGORY_CONSONANT_KILLER	/*   2 chars; Consonant_Killer */
++#define ISC_CM	INDIC_SYLLABIC_CATEGORY_CONSONANT_MEDIAL	/*  22 chars; Consonant_Medial */
++#define ISC_CP	INDIC_SYLLABIC_CATEGORY_CONSONANT_PLACEHOLDER	/*  13 chars; Consonant_Placeholder */
+ #define ISC_CPR	INDIC_SYLLABIC_CATEGORY_CONSONANT_PRECEDING_REPHA	/*   1 chars; Consonant_Preceding_Repha */
++#define ISC_CPrf	INDIC_SYLLABIC_CATEGORY_CONSONANT_PREFIXED	/*   2 chars; Consonant_Prefixed */
+ #define ISC_CS	INDIC_SYLLABIC_CATEGORY_CONSONANT_SUBJOINED	/*  61 chars; Consonant_Subjoined */
+ #define ISC_CSR	INDIC_SYLLABIC_CATEGORY_CONSONANT_SUCCEEDING_REPHA	/*   4 chars; Consonant_Succeeding_Repha */
++#define ISC_CWS	INDIC_SYLLABIC_CATEGORY_CONSONANT_WITH_STACKER	/*   4 chars; Consonant_With_Stacker */
+ #define ISC_GM	INDIC_SYLLABIC_CATEGORY_GEMINATION_MARK		/*   2 chars; Gemination_Mark */
+ #define ISC_IS	INDIC_SYLLABIC_CATEGORY_INVISIBLE_STACKER	/*   7 chars; Invisible_Stacker */
+ #define ISC_ZWJ	INDIC_SYLLABIC_CATEGORY_JOINER			/*   1 chars; Joiner */
+ #define ISC_ML	INDIC_SYLLABIC_CATEGORY_MODIFYING_LETTER	/*   1 chars; Modifying_Letter */
+ #define ISC_ZWNJ	INDIC_SYLLABIC_CATEGORY_NON_JOINER		/*   1 chars; Non_Joiner */
+-#define ISC_N	INDIC_SYLLABIC_CATEGORY_NUKTA			/*  18 chars; Nukta */
+-#define ISC_Nd	INDIC_SYLLABIC_CATEGORY_NUMBER			/* 408 chars; Number */
++#define ISC_N	INDIC_SYLLABIC_CATEGORY_NUKTA			/*  23 chars; Nukta */
++#define ISC_Nd	INDIC_SYLLABIC_CATEGORY_NUMBER			/* 420 chars; Number */
+ #define ISC_NJ	INDIC_SYLLABIC_CATEGORY_NUMBER_JOINER		/*   1 chars; Number_Joiner */
+ #define ISC_x	INDIC_SYLLABIC_CATEGORY_OTHER			/*   1 chars; Other */
+-#define ISC_PK	INDIC_SYLLABIC_CATEGORY_PURE_KILLER		/*  15 chars; Pure_Killer */
+-#define ISC_RS	INDIC_SYLLABIC_CATEGORY_REGISTER_SHIFTER	/*   3 chars; Register_Shifter */
++#define ISC_PK	INDIC_SYLLABIC_CATEGORY_PURE_KILLER		/*  16 chars; Pure_Killer */
++#define ISC_RS	INDIC_SYLLABIC_CATEGORY_REGISTER_SHIFTER	/*   2 chars; Register_Shifter */
++#define ISC_SM	INDIC_SYLLABIC_CATEGORY_SYLLABLE_MODIFIER	/*  20 chars; Syllable_Modifier */
+ #define ISC_TL	INDIC_SYLLABIC_CATEGORY_TONE_LETTER		/*   7 chars; Tone_Letter */
+-#define ISC_TM	INDIC_SYLLABIC_CATEGORY_TONE_MARK		/*  62 chars; Tone_Mark */
++#define ISC_TM	INDIC_SYLLABIC_CATEGORY_TONE_MARK		/*  42 chars; Tone_Mark */
+ #define ISC_V	INDIC_SYLLABIC_CATEGORY_VIRAMA			/*  22 chars; Virama */
+ #define ISC_Vs	INDIC_SYLLABIC_CATEGORY_VISARGA			/*  29 chars; Visarga */
+ #define ISC_Vo	INDIC_SYLLABIC_CATEGORY_VOWEL			/*  30 chars; Vowel */
+-#define ISC_M	INDIC_SYLLABIC_CATEGORY_VOWEL_DEPENDENT		/* 553 chars; Vowel_Dependent */
+-#define ISC_VI	INDIC_SYLLABIC_CATEGORY_VOWEL_INDEPENDENT	/* 395 chars; Vowel_Independent */
++#define ISC_M	INDIC_SYLLABIC_CATEGORY_VOWEL_DEPENDENT		/* 572 chars; Vowel_Dependent */
++#define ISC_VI	INDIC_SYLLABIC_CATEGORY_VOWEL_INDEPENDENT	/* 404 chars; Vowel_Independent */
+ 
+-#define IMC_B	INDIC_MATRA_CATEGORY_BOTTOM			/* 142 chars; Bottom */
++#define IMC_B	INDIC_MATRA_CATEGORY_BOTTOM			/* 256 chars; Bottom */
+ #define IMC_BR	INDIC_MATRA_CATEGORY_BOTTOM_AND_RIGHT		/*   2 chars; Bottom_And_Right */
+-#define IMC_L	INDIC_MATRA_CATEGORY_LEFT			/*  57 chars; Left */
++#define IMC_L	INDIC_MATRA_CATEGORY_LEFT			/*  55 chars; Left */
+ #define IMC_LR	INDIC_MATRA_CATEGORY_LEFT_AND_RIGHT		/*  21 chars; Left_And_Right */
+ #define IMC_x	INDIC_MATRA_CATEGORY_NOT_APPLICABLE		/*   1 chars; Not_Applicable */
+-#define IMC_O	INDIC_MATRA_CATEGORY_OVERSTRUCK			/*   2 chars; Overstruck */
+-#define IMC_R	INDIC_MATRA_CATEGORY_RIGHT			/* 163 chars; Right */
+-#define IMC_T	INDIC_MATRA_CATEGORY_TOP			/* 169 chars; Top */
++#define IMC_O	INDIC_MATRA_CATEGORY_OVERSTRUCK			/*  10 chars; Overstruck */
++#define IMC_R	INDIC_MATRA_CATEGORY_RIGHT			/* 249 chars; Right */
++#define IMC_T	INDIC_MATRA_CATEGORY_TOP			/* 324 chars; Top */
+ #define IMC_TB	INDIC_MATRA_CATEGORY_TOP_AND_BOTTOM		/*  10 chars; Top_And_Bottom */
+ #define IMC_TBR	INDIC_MATRA_CATEGORY_TOP_AND_BOTTOM_AND_RIGHT	/*   1 chars; Top_And_Bottom_And_Right */
+ #define IMC_TL	INDIC_MATRA_CATEGORY_TOP_AND_LEFT		/*   6 chars; Top_And_Left */
+ #define IMC_TLR	INDIC_MATRA_CATEGORY_TOP_AND_LEFT_AND_RIGHT	/*   4 chars; Top_And_Left_And_Right */
+ #define IMC_TR	INDIC_MATRA_CATEGORY_TOP_AND_RIGHT		/*  13 chars; Top_And_Right */
+-#define IMC_VOL	INDIC_MATRA_CATEGORY_VISUAL_ORDER_LEFT		/*  15 chars; Visual_Order_Left */
++#define IMC_VOL	INDIC_MATRA_CATEGORY_VISUAL_ORDER_LEFT		/*  19 chars; Visual_Order_Left */
+ 
+ #define _(S,M) INDIC_COMBINE_CATEGORIES (ISC_##S, IMC_##M)
+ 
+ 
+ static const INDIC_TABLE_ELEMENT_TYPE indic_table[] = {
+ 
+ 
+ #define indic_offset_0x0028u 0
+ 
+ 
+   /* Basic Latin */
+ 
+   /* 0028 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x), _(CP,x),  _(x,x),  _(x,x),
+   /* 0030 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 0038 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+-#define indic_offset_0x00d0u 24
++#define indic_offset_0x00b0u 24
+ 
+ 
+   /* Latin-1 Supplement */
+ 
++  /* 00B0 */  _(x,x),  _(x,x), _(SM,x), _(SM,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 00B8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 00C0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 00C8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 00D0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x), _(CP,x),
+ 
+-#define indic_offset_0x0900u 32
++#define indic_offset_0x0900u 64
+ 
+ 
+   /* Devanagari */
+ 
+-  /* 0900 */ _(Bi,x), _(Bi,x), _(Bi,x), _(Vs,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
++  /* 0900 */ _(Bi,T), _(Bi,T), _(Bi,T), _(Vs,R), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 0908 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 0910 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0918 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0920 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0928 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0930 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+-  /* 0938 */  _(C,x),  _(C,x),  _(M,T),  _(M,R),  _(N,x),  _(A,x),  _(M,R),  _(M,L),
++  /* 0938 */  _(C,x),  _(C,x),  _(M,T),  _(M,R),  _(N,B),  _(A,x),  _(M,R),  _(M,L),
+   /* 0940 */  _(M,R),  _(M,B),  _(M,B),  _(M,B),  _(M,B),  _(M,T),  _(M,T),  _(M,T),
+   /* 0948 */  _(M,T),  _(M,R),  _(M,R),  _(M,R),  _(M,R),  _(V,B),  _(M,L),  _(M,R),
+-  /* 0950 */  _(x,x), _(TM,x), _(TM,x),  _(x,x),  _(x,x),  _(M,T),  _(M,B),  _(M,B),
++  /* 0950 */  _(x,x), _(Ca,T), _(Ca,B),  _(x,T),  _(x,T),  _(M,T),  _(M,B),  _(M,B),
+   /* 0958 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0960 */ _(VI,x), _(VI,x),  _(M,B),  _(M,B),  _(x,x),  _(x,x), _(Nd,x), _(Nd,x),
+   /* 0968 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 0970 */  _(x,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 0978 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+ 
+   /* Bengali */
+ 
+-  /* 0980 */  _(x,x), _(Bi,x), _(Bi,x), _(Vs,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
++  /* 0980 */  _(x,x), _(Bi,T), _(Bi,R), _(Vs,R),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 0988 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(x,x),  _(x,x), _(VI,x),
+   /* 0990 */ _(VI,x),  _(x,x),  _(x,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0998 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 09A0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 09A8 */  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 09B0 */  _(C,x),  _(x,x),  _(C,x),  _(x,x),  _(x,x),  _(x,x),  _(C,x),  _(C,x),
+-  /* 09B8 */  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(N,x),  _(A,x),  _(M,R),  _(M,L),
++  /* 09B8 */  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(N,B),  _(A,x),  _(M,R),  _(M,L),
+   /* 09C0 */  _(M,R),  _(M,B),  _(M,B),  _(M,B),  _(M,B),  _(x,x),  _(x,x),  _(M,L),
+   /* 09C8 */  _(M,L),  _(x,x),  _(x,x), _(M,LR), _(M,LR),  _(V,B), _(CD,x),  _(x,x),
+   /* 09D0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(M,R),
+   /* 09D8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(C,x),  _(C,x),  _(x,x),  _(C,x),
+   /* 09E0 */ _(VI,x), _(VI,x),  _(M,B),  _(M,B),  _(x,x),  _(x,x), _(Nd,x), _(Nd,x),
+   /* 09E8 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 09F0 */  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 09F8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Gurmukhi */
+ 
+-  /* 0A00 */  _(x,x), _(Bi,x), _(Bi,x), _(Vs,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
++  /* 0A00 */  _(x,x), _(Bi,T), _(Bi,T), _(Vs,R),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 0A08 */ _(VI,x), _(VI,x), _(VI,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x), _(VI,x),
+   /* 0A10 */ _(VI,x),  _(x,x),  _(x,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0A18 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0A20 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0A28 */  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0A30 */  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(x,x),
+-  /* 0A38 */  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(N,x),  _(x,x),  _(M,R),  _(M,L),
++  /* 0A38 */  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(N,B),  _(x,x),  _(M,R),  _(M,L),
+   /* 0A40 */  _(M,R),  _(M,B),  _(M,B),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(M,T),
+   /* 0A48 */  _(M,T),  _(x,x),  _(x,x),  _(M,T),  _(M,T),  _(V,B),  _(x,x),  _(x,x),
+   /* 0A50 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 0A58 */  _(x,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(x,x),  _(C,x),  _(x,x),
+   /* 0A60 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x), _(Nd,x), _(Nd,x),
+   /* 0A68 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+-  /* 0A70 */ _(Bi,x), _(GM,T), _(CP,x), _(CP,x),  _(x,x), _(CM,x),  _(x,x),  _(x,x),
++  /* 0A70 */ _(Bi,T), _(GM,T), _(CP,x), _(CP,x),  _(x,x), _(CM,B),  _(x,x),  _(x,x),
+   /* 0A78 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Gujarati */
+ 
+-  /* 0A80 */  _(x,x), _(Bi,x), _(Bi,x), _(Vs,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
++  /* 0A80 */  _(x,x), _(Bi,T), _(Bi,T), _(Vs,R),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 0A88 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(x,x), _(VI,x),
+   /* 0A90 */ _(VI,x), _(VI,x),  _(x,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0A98 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0AA0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0AA8 */  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0AB0 */  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),
+-  /* 0AB8 */  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(N,x),  _(A,x),  _(M,R),  _(M,L),
++  /* 0AB8 */  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(N,B),  _(A,x),  _(M,R),  _(M,L),
+   /* 0AC0 */  _(M,R),  _(M,B),  _(M,B),  _(M,B),  _(M,B),  _(M,T),  _(x,x),  _(M,T),
+   /* 0AC8 */  _(M,T), _(M,TR),  _(x,x),  _(M,R),  _(M,R),  _(V,B),  _(x,x),  _(x,x),
+   /* 0AD0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 0AD8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 0AE0 */ _(VI,x), _(VI,x),  _(M,B),  _(M,B),  _(x,x),  _(x,x), _(Nd,x), _(Nd,x),
+   /* 0AE8 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 0AF0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+-  /* 0AF8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 0AF8 */  _(x,x),  _(C,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Oriya */
+ 
+-  /* 0B00 */  _(x,x), _(Bi,x), _(Bi,x), _(Vs,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
++  /* 0B00 */  _(x,x), _(Bi,T), _(Bi,R), _(Vs,R),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 0B08 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(x,x),  _(x,x), _(VI,x),
+   /* 0B10 */ _(VI,x),  _(x,x),  _(x,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0B18 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0B20 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0B28 */  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0B30 */  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),
+-  /* 0B38 */  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(N,x),  _(A,x),  _(M,R),  _(M,T),
++  /* 0B38 */  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(N,B),  _(A,x),  _(M,R),  _(M,T),
+   /* 0B40 */  _(M,R),  _(M,B),  _(M,B),  _(M,B),  _(M,B),  _(x,x),  _(x,x),  _(M,L),
+   /* 0B48 */ _(M,TL),  _(x,x),  _(x,x), _(M,LR),_(M,TLR),  _(V,B),  _(x,x),  _(x,x),
+   /* 0B50 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(M,T), _(M,TR),
+   /* 0B58 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(C,x),  _(C,x),  _(x,x),  _(C,x),
+   /* 0B60 */ _(VI,x), _(VI,x),  _(M,B),  _(M,B),  _(x,x),  _(x,x), _(Nd,x), _(Nd,x),
+   /* 0B68 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 0B70 */  _(x,x),  _(C,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 0B78 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Tamil */
+ 
+-  /* 0B80 */  _(x,x),  _(x,x), _(Bi,x), _(ML,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
++  /* 0B80 */  _(x,x),  _(x,x), _(Bi,T), _(ML,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 0B88 */ _(VI,x), _(VI,x), _(VI,x),  _(x,x),  _(x,x),  _(x,x), _(VI,x), _(VI,x),
+   /* 0B90 */ _(VI,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x),  _(C,x),  _(x,x),  _(x,x),
+   /* 0B98 */  _(x,x),  _(C,x),  _(C,x),  _(x,x),  _(C,x),  _(x,x),  _(C,x),  _(C,x),
+   /* 0BA0 */  _(x,x),  _(x,x),  _(x,x),  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 0BA8 */  _(C,x),  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(x,x),  _(C,x),  _(C,x),
+   /* 0BB0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0BB8 */  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(M,R),  _(M,R),
+-  /* 0BC0 */  _(M,T),  _(M,B),  _(M,B),  _(x,x),  _(x,x),  _(x,x),  _(M,L),  _(M,L),
++  /* 0BC0 */  _(M,T),  _(M,R),  _(M,R),  _(x,x),  _(x,x),  _(x,x),  _(M,L),  _(M,L),
+   /* 0BC8 */  _(M,L),  _(x,x), _(M,LR), _(M,LR), _(M,LR),  _(V,T),  _(x,x),  _(x,x),
+   /* 0BD0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(M,R),
+   /* 0BD8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 0BE0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x), _(Nd,x), _(Nd,x),
+   /* 0BE8 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 0BF0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 0BF8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Telugu */
+ 
+-  /* 0C00 */ _(Bi,x), _(Bi,x), _(Bi,x), _(Vs,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
++  /* 0C00 */ _(Bi,T), _(Bi,R), _(Bi,R), _(Vs,R),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 0C08 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(x,x), _(VI,x), _(VI,x),
+   /* 0C10 */ _(VI,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0C18 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0C20 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0C28 */  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0C30 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0C38 */  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(x,x),  _(A,x),  _(M,T),  _(M,T),
+   /* 0C40 */  _(M,T),  _(M,R),  _(M,R),  _(M,R),  _(M,R),  _(x,x),  _(M,T),  _(M,T),
+   /* 0C48 */ _(M,TB),  _(x,x),  _(M,T),  _(M,T),  _(M,T),  _(V,T),  _(x,x),  _(x,x),
+   /* 0C50 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(M,T),  _(M,B),  _(x,x),
+-  /* 0C58 */  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 0C58 */  _(C,x),  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 0C60 */ _(VI,x), _(VI,x),  _(M,B),  _(M,B),  _(x,x),  _(x,x), _(Nd,x), _(Nd,x),
+   /* 0C68 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 0C70 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 0C78 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Kannada */
+ 
+-  /* 0C80 */  _(x,x), _(Bi,x), _(Bi,x), _(Vs,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
++  /* 0C80 */  _(x,x), _(Bi,T), _(Bi,R), _(Vs,R),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 0C88 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(x,x), _(VI,x), _(VI,x),
+   /* 0C90 */ _(VI,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0C98 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0CA0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0CA8 */  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0CB0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),
+-  /* 0CB8 */  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(N,x),  _(A,x),  _(M,R),  _(M,T),
++  /* 0CB8 */  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(N,B),  _(A,x),  _(M,R),  _(M,T),
+   /* 0CC0 */ _(M,TR),  _(M,R),  _(M,R),  _(M,R),  _(M,R),  _(x,x),  _(M,T), _(M,TR),
+   /* 0CC8 */ _(M,TR),  _(x,x), _(M,TR), _(M,TR),  _(M,T),  _(V,T),  _(x,x),  _(x,x),
+   /* 0CD0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(M,R),  _(M,R),  _(x,x),
+   /* 0CD8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(C,x),  _(x,x),
+   /* 0CE0 */ _(VI,x), _(VI,x),  _(M,B),  _(M,B),  _(x,x),  _(x,x), _(Nd,x), _(Nd,x),
+   /* 0CE8 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+-  /* 0CF0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 0CF0 */  _(x,x),_(CWS,x),_(CWS,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 0CF8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Malayalam */
+ 
+-  /* 0D00 */  _(x,x), _(Bi,x), _(Bi,x), _(Vs,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
++  /* 0D00 */  _(x,x), _(Bi,T), _(Bi,R), _(Vs,R),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 0D08 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(x,x), _(VI,x), _(VI,x),
+   /* 0D10 */ _(VI,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0D18 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0D20 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0D28 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0D30 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0D38 */  _(C,x),  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(A,x),  _(M,R),  _(M,R),
+   /* 0D40 */  _(M,R),  _(M,R),  _(M,R),  _(M,B),  _(M,B),  _(x,x),  _(M,L),  _(M,L),
+   /* 0D48 */  _(M,L),  _(x,x), _(M,LR), _(M,LR), _(M,LR),  _(V,T),_(CPR,x),  _(x,x),
+   /* 0D50 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(M,R),
+-  /* 0D58 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 0D58 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x), _(VI,x),
+   /* 0D60 */ _(VI,x), _(VI,x),  _(M,B),  _(M,B),  _(x,x),  _(x,x), _(Nd,x), _(Nd,x),
+   /* 0D68 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 0D70 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 0D78 */  _(x,x),  _(x,x), _(CD,x), _(CD,x), _(CD,x), _(CD,x), _(CD,x), _(CD,x),
+ 
+   /* Sinhala */
+ 
+-  /* 0D80 */  _(x,x),  _(x,x), _(Bi,x), _(Vs,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
++  /* 0D80 */  _(x,x),  _(x,x), _(Bi,R), _(Vs,R),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 0D88 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 0D90 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(x,x),
+   /* 0D98 */  _(x,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0DA0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0DA8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0DB0 */  _(C,x),  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 0DB8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(x,x),  _(C,x),  _(x,x),  _(x,x),
+   /* 0DC0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(x,x),
+   /* 0DC8 */  _(x,x),  _(x,x),  _(V,T),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(M,R),
+   /* 0DD0 */  _(M,R),  _(M,R),  _(M,T),  _(M,T),  _(M,B),  _(x,x),  _(M,B),  _(x,x),
+   /* 0DD8 */  _(M,R),  _(M,L), _(M,TL),  _(M,L), _(M,LR),_(M,TLR), _(M,LR),  _(M,R),
+   /* 0DE0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x), _(Nd,x), _(Nd,x),
+   /* 0DE8 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 0DF0 */  _(x,x),  _(x,x),  _(M,R),  _(M,R),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+-#define indic_offset_0x1000u 1304
++#define indic_offset_0x1000u 1336
+ 
+ 
+   /* Myanmar */
+ 
+   /* 1000 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1008 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1010 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1018 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1020 */  _(C,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 1028 */ _(VI,x), _(VI,x), _(VI,x),  _(M,R),  _(M,R),  _(M,T),  _(M,T),  _(M,B),
+-  /* 1030 */  _(M,B),  _(M,L),  _(M,T),  _(M,T),  _(M,T),  _(M,T), _(Bi,x), _(TM,x),
+-  /* 1038 */ _(Vs,x), _(IS,x), _(PK,T), _(CM,x), _(CM,x), _(CM,x), _(CM,x),  _(C,x),
++  /* 1030 */  _(M,B),  _(M,L),  _(M,T),  _(M,T),  _(M,T),  _(M,T), _(Bi,T), _(TM,B),
++  /* 1038 */ _(Vs,R), _(IS,x), _(PK,T), _(CM,R), _(CM,x), _(CM,B), _(CM,B),  _(C,x),
+   /* 1040 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 1048 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x), _(CP,x),  _(x,x),
+   /* 1050 */  _(C,x),  _(C,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(M,R),  _(M,R),
+-  /* 1058 */  _(M,B),  _(M,B),  _(C,x),  _(C,x),  _(C,x),  _(C,x), _(CM,x), _(CM,x),
+-  /* 1060 */ _(CM,x),  _(C,x),  _(M,R), _(TM,x), _(TM,x),  _(C,x),  _(C,x),  _(M,R),
+-  /* 1068 */  _(M,R), _(TM,x), _(TM,x), _(TM,x), _(TM,x), _(TM,x),  _(C,x),  _(C,x),
++  /* 1058 */  _(M,B),  _(M,B),  _(C,x),  _(C,x),  _(C,x),  _(C,x), _(CM,B), _(CM,B),
++  /* 1060 */ _(CM,B),  _(C,x),  _(M,R), _(TM,R), _(TM,R),  _(C,x),  _(C,x),  _(M,R),
++  /* 1068 */  _(M,R), _(TM,R), _(TM,R), _(TM,R), _(TM,R), _(TM,R),  _(C,x),  _(C,x),
+   /* 1070 */  _(C,x),  _(M,T),  _(M,T),  _(M,T),  _(M,T),  _(C,x),  _(C,x),  _(C,x),
+   /* 1078 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+-  /* 1080 */  _(C,x),  _(C,x), _(CM,x),  _(M,R),  _(M,L),  _(M,T),  _(M,T), _(TM,x),
+-  /* 1088 */ _(TM,x), _(TM,x), _(TM,x), _(TM,x), _(TM,x), _(TM,x),  _(C,x), _(TM,x),
++  /* 1080 */  _(C,x),  _(C,x), _(CM,B),  _(M,R),  _(M,L),  _(M,T),  _(M,T), _(TM,R),
++  /* 1088 */ _(TM,R), _(TM,R), _(TM,R), _(TM,R), _(TM,R), _(TM,B),  _(C,x), _(TM,R),
+   /* 1090 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+-  /* 1098 */ _(Nd,x), _(Nd,x), _(TM,x), _(TM,x),  _(M,R),  _(M,T),  _(x,x),  _(x,x),
++  /* 1098 */ _(Nd,x), _(Nd,x), _(TM,R), _(TM,R),  _(M,R),  _(M,T),  _(x,x),  _(x,x),
+ 
+-#define indic_offset_0x1700u 1464
++#define indic_offset_0x1700u 1496
+ 
+ 
+   /* Tagalog */
+ 
+   /* 1700 */ _(VI,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1708 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(x,x),  _(C,x),  _(C,x),
+   /* 1710 */  _(C,x),  _(C,x),  _(M,T),  _(M,B), _(PK,B),  _(x,x),  _(x,x),  _(x,x),
+   /* 1718 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+@@ -340,36 +348,36 @@ static const INDIC_TABLE_ELEMENT_TYPE in
+   /* 1780 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1788 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1790 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1798 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 17A0 */  _(C,x),  _(C,x),  _(C,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 17A8 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 17B0 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(x,x),  _(x,x),  _(M,R),  _(M,T),
+   /* 17B8 */  _(M,T),  _(M,T),  _(M,T),  _(M,B),  _(M,B),  _(M,B), _(M,TL),_(M,TLR),
+-  /* 17C0 */ _(M,LR),  _(M,L),  _(M,L),  _(M,L), _(M,LR), _(M,LR), _(Bi,x), _(Vs,x),
+-  /* 17C8 */  _(M,R), _(RS,T), _(RS,T), _(RS,T),_(CSR,T),  _(M,T),  _(M,T),  _(M,T),
+-  /* 17D0 */  _(M,T), _(PK,T), _(IS,x),  _(M,T),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+-  /* 17D8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(A,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 17C0 */ _(M,LR),  _(M,L),  _(M,L),  _(M,L), _(M,LR), _(M,LR), _(Bi,T), _(Vs,R),
++  /* 17C8 */  _(M,R), _(RS,T), _(RS,T), _(SM,T),_(CSR,T), _(CK,T), _(SM,T), _(SM,T),
++  /* 17D0 */ _(SM,T), _(PK,T), _(IS,x), _(SM,T),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 17D8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(A,x),  _(x,T),  _(x,x),  _(x,x),
+   /* 17E0 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 17E8 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+-#define indic_offset_0x1900u 1704
++#define indic_offset_0x1900u 1736
+ 
+ 
+   /* Limbu */
+ 
+   /* 1900 */ _(CP,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1908 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1910 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1918 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(x,x),
+   /* 1920 */  _(M,T),  _(M,T),  _(M,B),  _(M,R),  _(M,R), _(M,TR), _(M,TR),  _(M,T),
+-  /* 1928 */  _(M,T), _(CS,x), _(CS,x), _(CS,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+-  /* 1930 */ _(CF,x), _(CF,x), _(Bi,x), _(CF,x), _(CF,x), _(CF,x), _(CF,x), _(CF,x),
+-  /* 1938 */ _(CF,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 1928 */  _(M,T), _(CS,R), _(CS,R), _(CS,R),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 1930 */ _(CF,R), _(CF,R), _(Bi,B), _(CF,R), _(CF,R), _(CF,R), _(CF,R), _(CF,R),
++  /* 1938 */ _(CF,R), _(CF,B),  _(M,T), _(SM,B),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 1940 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x), _(Nd,x), _(Nd,x),
+   /* 1948 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+ 
+   /* Tai Le */
+ 
+   /* 1950 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1958 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1960 */  _(C,x),  _(C,x),  _(C,x), _(Vo,x), _(Vo,x), _(Vo,x), _(Vo,x), _(Vo,x),
+@@ -380,20 +388,20 @@ static const INDIC_TABLE_ELEMENT_TYPE in
+   /* New Tai Lue */
+ 
+   /* 1980 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1988 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1990 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1998 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 19A0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 19A8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+-  /* 19B0 */  _(M,R),  _(M,R),  _(M,R),  _(M,R),  _(M,R),  _(M,L),  _(M,L),  _(M,L),
+-  /* 19B8 */  _(M,R),  _(M,R),  _(M,L),  _(M,R),  _(M,R),  _(M,R),  _(M,R),  _(M,R),
++  /* 19B0 */  _(M,R),  _(M,R),  _(M,R),  _(M,R),  _(M,R),_(M,VOL),_(M,VOL),_(M,VOL),
++  /* 19B8 */  _(M,R),  _(M,R),_(M,VOL),  _(M,R),  _(M,R),  _(M,R),  _(M,R),  _(M,R),
+   /* 19C0 */  _(M,R), _(CF,x), _(CF,x), _(CF,x), _(CF,x), _(CF,x), _(CF,x), _(CF,x),
+-  /* 19C8 */ _(TM,x), _(TM,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 19C8 */ _(TM,R), _(TM,R),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 19D0 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 19D8 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 19E0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 19E8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 19F0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 19F8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Buginese */
+@@ -406,110 +414,120 @@ static const INDIC_TABLE_ELEMENT_TYPE in
+   /* Tai Tham */
+ 
+   /* 1A20 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1A28 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1A30 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1A38 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1A40 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1A48 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x), _(VI,x), _(VI,x), _(VI,x),
+-  /* 1A50 */ _(VI,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x), _(CM,L), _(CM,x), _(CF,x),
+-  /* 1A58 */ _(CF,x), _(CF,x), _(CF,x), _(CF,x), _(CF,x), _(CF,x), _(CF,x),  _(x,x),
++  /* 1A50 */ _(VI,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x), _(CM,L), _(CM,B), _(CF,R),
++  /* 1A58 */ _(CF,T), _(CF,T), _(CF,T), _(CF,B), _(CF,B), _(CF,B), _(CF,B),  _(x,x),
+   /* 1A60 */ _(IS,x),  _(M,R),  _(M,T),  _(M,R),  _(M,R),  _(M,T),  _(M,T),  _(M,T),
+   /* 1A68 */  _(M,T),  _(M,B),  _(M,B),  _(M,T),  _(M,B),  _(M,R),  _(M,L),  _(M,L),
+-  /* 1A70 */  _(M,L),  _(M,L),  _(M,L),  _(M,T),  _(M,T), _(TM,x), _(TM,x), _(TM,x),
+-  /* 1A78 */ _(TM,x), _(TM,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 1A70 */  _(M,L),  _(M,L),  _(M,L),  _(M,T),  _(M,T), _(TM,T), _(TM,T), _(TM,T),
++  /* 1A78 */ _(TM,T), _(TM,T), _(SM,T), _(SM,T), _(SM,T),  _(x,x),  _(x,x), _(SM,B),
+   /* 1A80 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 1A88 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 1A90 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 1A98 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+-#define indic_offset_0x1b00u 2120
++#define indic_offset_0x1b00u 2152
+ 
+ 
+   /* Balinese */
+ 
+-  /* 1B00 */ _(Bi,x), _(Bi,x), _(Bi,x),_(CSR,x), _(Vs,x), _(VI,x), _(VI,x), _(VI,x),
++  /* 1B00 */ _(Bi,T), _(Bi,T), _(Bi,T),_(CSR,T), _(Vs,R), _(VI,x), _(VI,x), _(VI,x),
+   /* 1B08 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 1B10 */ _(VI,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1B18 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1B20 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1B28 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+-  /* 1B30 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(N,x),  _(M,R),  _(M,T),  _(M,T),
++  /* 1B30 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(N,T),  _(M,R),  _(M,T),  _(M,T),
+   /* 1B38 */  _(M,B),  _(M,B),  _(M,B), _(M,BR), _(M,TB),_(M,TBR),  _(M,L),  _(M,L),
+   /* 1B40 */ _(M,LR), _(M,LR),  _(M,T), _(M,TR),  _(V,R),  _(C,x),  _(C,x),  _(C,x),
+   /* 1B48 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 1B50 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 1B58 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 1B60 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+-  /* 1B68 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+-  /* 1B70 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 1B68 */  _(x,x),  _(x,x),  _(x,x),  _(x,T),  _(x,B),  _(x,T),  _(x,T),  _(x,T),
++  /* 1B70 */  _(x,T),  _(x,T),  _(x,T),  _(x,T),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 1B78 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Sundanese */
+ 
+-  /* 1B80 */ _(Bi,x),_(CSR,x), _(Vs,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
++  /* 1B80 */ _(Bi,T),_(CSR,T), _(Vs,R), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 1B88 */ _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1B90 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1B98 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+-  /* 1BA0 */  _(C,x), _(CS,x), _(CS,x), _(CS,x),  _(M,T),  _(M,B),  _(M,L),  _(M,R),
+-  /* 1BA8 */  _(M,T),  _(M,T), _(PK,R), _(IS,x), _(CS,x), _(CS,x),  _(C,x),  _(C,x),
++  /* 1BA0 */  _(C,x), _(CS,R), _(CS,B), _(CS,B),  _(M,T),  _(M,B),  _(M,L),  _(M,R),
++  /* 1BA8 */  _(M,T),  _(M,T), _(PK,R), _(IS,x), _(CS,B), _(CS,B),  _(C,x),  _(C,x),
+   /* 1BB0 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 1BB8 */ _(Nd,x), _(Nd,x),  _(A,x),  _(C,x),  _(C,x),  _(C,x), _(CF,x), _(CF,x),
+ 
+   /* Batak */
+ 
+   /* 1BC0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1BC8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1BD0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1BD8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+-  /* 1BE0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x), _(VI,x), _(VI,x),  _(N,x),  _(M,R),
++  /* 1BE0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x), _(VI,x), _(VI,x),  _(N,T),  _(M,R),
+   /* 1BE8 */  _(M,T),  _(M,T),  _(M,R),  _(M,R),  _(M,R),  _(M,T),  _(M,R),  _(M,T),
+-  /* 1BF0 */ _(CF,x), _(CF,x), _(PK,R), _(PK,R),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 1BF0 */ _(CF,T), _(CF,T), _(PK,R), _(PK,R),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 1BF8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Lepcha */
+ 
+   /* 1C00 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1C08 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1C10 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 1C18 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+-  /* 1C20 */  _(C,x),  _(C,x),  _(C,x),  _(C,x), _(CS,x), _(CS,x),  _(M,R),  _(M,L),
+-  /* 1C28 */  _(M,L), _(M,TL),  _(M,R),  _(M,R),  _(M,B), _(CF,x), _(CF,x), _(CF,x),
+-  /* 1C30 */ _(CF,x), _(CF,x), _(CF,x), _(CF,x), _(Bi,L), _(Bi,L),  _(x,x),  _(N,x),
++  /* 1C20 */  _(C,x),  _(C,x),  _(C,x),  _(C,x), _(CS,R), _(CS,R),  _(M,R),  _(M,L),
++  /* 1C28 */  _(M,L), _(M,TL),  _(M,R),  _(M,R),  _(M,B), _(CF,T), _(CF,T), _(CF,T),
++  /* 1C30 */ _(CF,T), _(CF,T), _(CF,T), _(CF,T), _(Bi,L), _(Bi,L), _(SM,T),  _(N,B),
+   /* 1C38 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 1C40 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 1C48 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),
+ 
+-#define indic_offset_0x1cd0u 2456
++#define indic_offset_0x1cd0u 2488
+ 
+ 
+   /* Vedic Extensions */
+ 
+-  /* 1CD0 */ _(TM,x), _(TM,x), _(TM,x),  _(x,x), _(TM,x), _(TM,x), _(TM,x), _(TM,x),
+-  /* 1CD8 */ _(TM,x), _(TM,x), _(TM,x), _(TM,x), _(TM,x), _(TM,x), _(TM,x), _(TM,x),
+-  /* 1CE0 */ _(TM,x), _(TM,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+-  /* 1CE8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+-  /* 1CF0 */  _(x,x),  _(x,x), _(Vs,x), _(Vs,x), _(TM,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 1CD0 */ _(Ca,T), _(Ca,T), _(Ca,T),  _(x,x), _(Ca,O), _(Ca,B), _(Ca,B), _(Ca,B),
++  /* 1CD8 */ _(Ca,B), _(Ca,B), _(Ca,T), _(Ca,T), _(Ca,B), _(Ca,B), _(Ca,B), _(Ca,B),
++  /* 1CE0 */ _(Ca,T), _(Ca,R),  _(x,O),  _(x,O),  _(x,O),  _(x,O),  _(x,O),  _(x,O),
++  /* 1CE8 */  _(x,O),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,B),  _(x,x),  _(x,x),
++  /* 1CF0 */  _(x,x),  _(x,x), _(Vs,x), _(Vs,x), _(Ca,T),  _(x,x),  _(x,x),  _(x,x),
++  /* 1CF8 */ _(Ca,x), _(Ca,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+-#define indic_offset_0x2008u 2496
++#define indic_offset_0x2008u 2536
+ 
+ 
+   /* General Punctuation */
+ 
+   /* 2008 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),_(ZWNJ,x),_(ZWJ,x),  _(x,x),  _(x,x),
+-  /* 2010 */  _(x,x),  _(x,x), _(CP,x), _(CP,x), _(CP,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 2010 */ _(CP,x), _(CP,x), _(CP,x), _(CP,x), _(CP,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+-#define indic_offset_0xa800u 2512
++#define indic_offset_0x2070u 2552
++
++
++  /* Superscripts and Subscripts */
++
++  /* 2070 */  _(x,x),  _(x,x),  _(x,x),  _(x,x), _(SM,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 2078 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 2080 */  _(x,x),  _(x,x), _(SM,x), _(SM,x), _(SM,x),  _(x,x),  _(x,x),  _(x,x),
++
++#define indic_offset_0xa800u 2576
+ 
+ 
+   /* Syloti Nagri */
+ 
+   /* A800 */ _(VI,x), _(VI,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x), _(PK,T),  _(C,x),
+-  /* A808 */  _(C,x),  _(C,x),  _(C,x), _(Bi,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
++  /* A808 */  _(C,x),  _(C,x),  _(C,x), _(Bi,T),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* A810 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* A818 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* A820 */  _(C,x),  _(C,x),  _(C,x),  _(M,R),  _(M,R),  _(M,B),  _(M,T),  _(M,R),
+   /* A828 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* A830 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* A838 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Phags-pa */
+@@ -520,158 +538,158 @@ static const INDIC_TABLE_ELEMENT_TYPE in
+   /* A858 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x), _(Vo,x), _(Vo,x),
+   /* A860 */ _(Vo,x), _(Vo,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x), _(Vo,x), _(CS,x),
+   /* A868 */ _(CS,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* A870 */  _(C,x), _(CS,x),  _(C,x), _(Bi,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* A878 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Saurashtra */
+ 
+-  /* A880 */ _(Bi,x), _(Vs,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
++  /* A880 */ _(Bi,R), _(Vs,R), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* A888 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* A890 */ _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* A898 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* A8A0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* A8A8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+-  /* A8B0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x), _(CF,x),  _(M,R),  _(M,R),  _(M,R),
++  /* A8B0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x), _(CF,R),  _(M,R),  _(M,R),  _(M,R),
+   /* A8B8 */  _(M,R),  _(M,R),  _(M,R),  _(M,R),  _(M,R),  _(M,R),  _(M,R),  _(M,R),
+   /* A8C0 */  _(M,R),  _(M,R),  _(M,R),  _(M,R),  _(V,B),  _(x,x),  _(x,x),  _(x,x),
+   /* A8C8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* A8D0 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* A8D8 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Devanagari Extended */
+ 
+-  /* A8E0 */ _(Ca,x), _(Ca,x), _(Ca,x), _(Ca,x), _(Ca,x), _(Ca,x), _(Ca,x), _(Ca,x),
+-  /* A8E8 */ _(Ca,x), _(Ca,x), _(Ca,x), _(Ca,x), _(Ca,x), _(Ca,x), _(Ca,x), _(Ca,x),
+-  /* A8F0 */ _(Ca,x), _(Ca,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* A8E0 */ _(Ca,T), _(Ca,T), _(Ca,T), _(Ca,T), _(Ca,T), _(Ca,T), _(Ca,T), _(Ca,T),
++  /* A8E8 */ _(Ca,T), _(Ca,T), _(Ca,T), _(Ca,T), _(Ca,T), _(Ca,T), _(Ca,T), _(Ca,T),
++  /* A8F0 */ _(Ca,T), _(Ca,T),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* A8F8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Kayah Li */
+ 
+   /* A900 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* A908 */ _(Nd,x), _(Nd,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* A910 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* A918 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* A920 */  _(C,x),  _(C,x), _(Vo,x), _(Vo,x), _(Vo,x), _(Vo,x), _(Vo,x), _(Vo,x),
+-  /* A928 */ _(Vo,x), _(Vo,x), _(Vo,x), _(TM,x), _(TM,x), _(TM,x),  _(x,x),  _(x,x),
++  /* A928 */ _(Vo,x), _(Vo,x), _(Vo,x), _(TM,B), _(TM,B), _(TM,B),  _(x,x),  _(x,x),
+ 
+   /* Rejang */
+ 
+   /* A930 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* A938 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* A940 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(M,B),
+-  /* A948 */  _(M,B),  _(M,B),  _(M,T),  _(M,B),  _(M,B),  _(M,B),  _(M,B), _(CF,x),
+-  /* A950 */ _(CF,x), _(CF,x), _(CF,x), _(PK,R),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* A948 */  _(M,B),  _(M,B),  _(M,T),  _(M,B),  _(M,B),  _(M,B),  _(M,B), _(CF,T),
++  /* A950 */ _(CF,T), _(CF,T), _(CF,R), _(PK,R),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* A958 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* A960 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* A968 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* A970 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* A978 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Javanese */
+ 
+-  /* A980 */ _(Bi,x), _(Bi,x),_(CSR,x), _(Vs,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
++  /* A980 */ _(Bi,T), _(Bi,T),_(CSR,T), _(Vs,R), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* A988 */ _(VI,x),  _(C,x),  _(C,x),  _(C,x), _(VI,x), _(VI,x), _(VI,x),  _(C,x),
+   /* A990 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* A998 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* A9A0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* A9A8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+-  /* A9B0 */  _(C,x),  _(C,x),  _(C,x),  _(N,x),  _(M,R),  _(M,R),  _(M,T),  _(M,T),
+-  /* A9B8 */  _(M,B),  _(M,B),  _(M,L),  _(M,L),  _(M,T), _(CS,x), _(CM,x), _(CM,x),
++  /* A9B0 */  _(C,x),  _(C,x),  _(C,x),  _(N,T),  _(M,R),  _(M,R),  _(M,T),  _(M,T),
++  /* A9B8 */  _(M,B),  _(M,B),  _(M,L),  _(M,L),  _(M,T), _(CS,R), _(CM,R), _(CM,R),
+   /* A9C0 */ _(V,BR),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* A9C8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* A9D0 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* A9D8 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Myanmar Extended-B */
+ 
+-  /* A9E0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(C,x),
++  /* A9E0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(M,T),  _(x,x),  _(C,x),
+   /* A9E8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* A9F0 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* A9F8 */ _(Nd,x), _(Nd,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(x,x),
+ 
+   /* Cham */
+ 
+   /* AA00 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),
+   /* AA08 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* AA10 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* AA18 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* AA20 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* AA28 */  _(C,x),  _(M,T),  _(M,T),  _(M,T),  _(M,T),  _(M,B),  _(M,T),  _(M,L),
+-  /* AA30 */  _(M,L),  _(M,T),  _(M,B), _(CM,x), _(CM,L), _(CM,x), _(CM,x),  _(x,x),
++  /* AA30 */  _(M,L),  _(M,T),  _(M,B), _(CM,R), _(CM,L), _(CM,B), _(CM,B),  _(x,x),
+   /* AA38 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+-  /* AA40 */ _(CF,x), _(CF,x), _(CF,x), _(CF,x), _(CF,x), _(CF,x), _(CF,x), _(CF,x),
+-  /* AA48 */ _(CF,x), _(CF,x), _(CF,x), _(CF,x), _(CF,x), _(CF,x),  _(x,x),  _(x,x),
++  /* AA40 */ _(CF,x), _(CF,x), _(CF,x), _(CF,T), _(CF,x), _(CF,x), _(CF,x), _(CF,x),
++  /* AA48 */ _(CF,x), _(CF,x), _(CF,x), _(CF,x), _(CF,T), _(CF,R),  _(x,x),  _(x,x),
+   /* AA50 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* AA58 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Myanmar Extended-A */
+ 
+   /* AA60 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* AA68 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* AA70 */  _(x,x),  _(C,x),  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+-  /* AA78 */  _(x,x),  _(x,x),  _(C,x), _(TM,x), _(TM,x), _(TM,x),  _(C,x),  _(C,x),
++  /* AA78 */  _(x,x),  _(x,x),  _(C,x), _(TM,R), _(TM,T), _(TM,R),  _(C,x),  _(C,x),
+ 
+   /* Tai Viet */
+ 
+   /* AA80 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* AA88 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* AA90 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* AA98 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* AAA0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* AAA8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* AAB0 */  _(M,T),  _(M,R),  _(M,T),  _(M,T),  _(M,B),_(M,VOL),_(M,VOL),  _(M,T),
+-  /* AAB8 */  _(M,T),_(M,VOL),  _(M,R),_(M,VOL),_(M,VOL),  _(M,R),  _(M,T), _(TM,x),
+-  /* AAC0 */ _(TL,x), _(TM,x), _(TL,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* AAB8 */  _(M,T),_(M,VOL),  _(M,R),_(M,VOL),_(M,VOL),  _(M,R),  _(M,T), _(TM,T),
++  /* AAC0 */ _(TL,x), _(TM,T), _(TL,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* AAC8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* AAD0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* AAD8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Meetei Mayek Extensions */
+ 
+   /* AAE0 */ _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* AAE8 */  _(C,x),  _(C,x),  _(C,x),  _(M,L),  _(M,B),  _(M,T),  _(M,L),  _(M,R),
+-  /* AAF0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x), _(Vs,x), _(IS,x),  _(x,x),
++  /* AAF0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x), _(Vs,R), _(IS,x),  _(x,x),
+ 
+-#define indic_offset_0xabc0u 3272
++#define indic_offset_0xabc0u 3336
+ 
+ 
+   /* Meetei Mayek */
+ 
+   /* ABC0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* ABC8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x), _(VI,x), _(VI,x),
+   /* ABD0 */  _(C,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* ABD8 */  _(C,x),  _(C,x),  _(C,x), _(CF,x), _(CF,x), _(CF,x), _(CF,x), _(CF,x),
+   /* ABE0 */ _(CF,x), _(CF,x), _(CF,x),  _(M,R),  _(M,R),  _(M,T),  _(M,R),  _(M,R),
+-  /* ABE8 */  _(M,B),  _(M,R),  _(M,R),  _(x,x), _(TM,x), _(PK,B),  _(x,x),  _(x,x),
++  /* ABE8 */  _(M,B),  _(M,R),  _(M,R),  _(x,x), _(TM,R), _(PK,B),  _(x,x),  _(x,x),
+   /* ABF0 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* ABF8 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+-#define indic_offset_0x10a00u 3336
++#define indic_offset_0x10a00u 3400
+ 
+ 
+   /* Kharoshthi */
+ 
+   /* 10A00 */  _(C,x),  _(M,O),  _(M,B),  _(M,B),  _(x,x),  _(M,T),  _(M,O),  _(x,x),
+-  /* 10A08 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(M,B),  _(x,x), _(Bi,x), _(Vs,x),
++  /* 10A08 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(M,B),  _(M,B), _(Bi,B), _(Vs,T),
+   /* 10A10 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 10A18 */  _(x,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 10A20 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 10A28 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 10A30 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+-  /* 10A38 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x), _(IS,x),
++  /* 10A38 */  _(N,T),  _(N,B),  _(N,B),  _(x,x),  _(x,x),  _(x,x),  _(x,x), _(IS,x),
+   /* 10A40 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+ 
+-#define indic_offset_0x11000u 3408
++#define indic_offset_0x11000u 3472
+ 
+ 
+   /* Brahmi */
+ 
+-  /* 11000 */ _(Bi,x), _(Bi,x), _(Vs,x),  _(x,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
++  /* 11000 */ _(Bi,R), _(Bi,T), _(Vs,R),_(CWS,x),_(CWS,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 11008 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 11010 */ _(VI,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11018 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11020 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11028 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11030 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11038 */  _(M,T),  _(M,T),  _(M,T),  _(M,T),  _(M,B),  _(M,B),  _(M,B),  _(M,B),
+   /* 11040 */  _(M,B),  _(M,B),  _(M,T),  _(M,T),  _(M,T),  _(M,T),  _(V,T),  _(x,x),
+@@ -680,62 +698,62 @@ static const INDIC_TABLE_ELEMENT_TYPE in
+   /* 11058 */_(BJN,x),_(BJN,x),_(BJN,x),_(BJN,x),_(BJN,x),_(BJN,x),_(BJN,x),_(BJN,x),
+   /* 11060 */_(BJN,x),_(BJN,x),_(BJN,x),_(BJN,x),_(BJN,x),_(BJN,x), _(Nd,x), _(Nd,x),
+   /* 11068 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 11070 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 11078 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x), _(NJ,x),
+ 
+   /* Kaithi */
+ 
+-  /* 11080 */ _(Bi,x), _(Bi,x), _(Vs,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
++  /* 11080 */ _(Bi,T), _(Bi,T), _(Vs,R), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 11088 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11090 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11098 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 110A0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 110A8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 110B0 */  _(M,R),  _(M,L),  _(M,R),  _(M,B),  _(M,B),  _(M,T),  _(M,T),  _(M,R),
+-  /* 110B8 */  _(M,R),  _(V,B),  _(N,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 110B8 */  _(M,R),  _(V,B),  _(N,B),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+-#define indic_offset_0x11100u 3600
++#define indic_offset_0x11100u 3664
+ 
+ 
+   /* Chakma */
+ 
+-  /* 11100 */ _(Bi,x), _(Bi,x), _(Vs,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(C,x),
++  /* 11100 */ _(Bi,T), _(Bi,T), _(Vs,T), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(C,x),
+   /* 11108 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11110 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11118 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11120 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(M,T),
+   /* 11128 */  _(M,T),  _(M,T),  _(M,B),  _(M,B),  _(M,L),  _(M,T), _(M,TB), _(M,TB),
+   /* 11130 */  _(M,T),  _(M,B),  _(M,B), _(IS,x), _(PK,T),  _(x,x), _(Nd,x), _(Nd,x),
+   /* 11138 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 11140 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 11148 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Mahajani */
+ 
+   /* 11150 */ _(Vo,x), _(Vo,x), _(Vo,x), _(Vo,x), _(Vo,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11158 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11160 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11168 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+-  /* 11170 */  _(C,x),  _(C,x),  _(C,x),  _(N,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 11170 */  _(C,x),  _(C,x),  _(C,x),  _(N,B),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 11178 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Sharada */
+ 
+-  /* 11180 */ _(Bi,x), _(Bi,x), _(Vs,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
++  /* 11180 */ _(Bi,T), _(Bi,T), _(Vs,R), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 11188 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 11190 */ _(VI,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11198 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 111A0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 111A8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 111B0 */  _(C,x),  _(C,x),  _(C,x),  _(M,R),  _(M,L),  _(M,R),  _(M,B),  _(M,B),
+   /* 111B8 */  _(M,B),  _(M,B),  _(M,B),  _(M,B),  _(M,T),  _(M,T),  _(M,T), _(M,TR),
+-  /* 111C0 */  _(V,R),  _(A,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+-  /* 111C8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 111C0 */  _(V,R),  _(A,x),_(CPrf,x),_(CPrf,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 111C8 */  _(x,x),  _(x,x),  _(N,x),  _(M,T),  _(M,B),  _(x,x),  _(x,x),  _(x,x),
+   /* 111D0 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 111D8 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Sinhala Archaic Numbers */
+ 
+   /* 111E0 */  _(x,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 111E8 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 111F0 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),
+@@ -744,163 +762,193 @@ static const INDIC_TABLE_ELEMENT_TYPE in
+   /* Khojki */
+ 
+   /* 11200 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 11208 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11210 */  _(C,x),  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11218 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11220 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11228 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(M,R),  _(M,R),  _(M,R),  _(M,B),
+-  /* 11230 */  _(M,T),  _(M,T), _(M,TR), _(M,TR), _(Bi,x),  _(V,R),  _(N,x), _(GM,T),
++  /* 11230 */  _(M,T),  _(M,T), _(M,TR), _(M,TR), _(Bi,T),  _(V,R),  _(N,T), _(GM,T),
+ 
+-#define indic_offset_0x112b0u 3912
++#define indic_offset_0x11280u 3976
+ 
+ 
++  /* Multani */
++
++  /* 11280 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),  _(x,x),
++  /* 11288 */  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(x,x),  _(C,x),
++  /* 11290 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
++  /* 11298 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(x,x),  _(C,x),
++  /* 112A0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
++  /* 112A8 */  _(C,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++
+   /* Khudawadi */
+ 
+   /* 112B0 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 112B8 */ _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 112C0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 112C8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 112D0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+-  /* 112D8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x), _(Bi,x),
++  /* 112D8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x), _(Bi,T),
+   /* 112E0 */  _(M,R),  _(M,L),  _(M,R),  _(M,B),  _(M,B),  _(M,T),  _(M,T),  _(M,T),
+-  /* 112E8 */  _(M,T),  _(N,x), _(PK,B),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 112E8 */  _(M,T),  _(N,B), _(PK,B),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 112F0 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 112F8 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Grantha */
+ 
+-  /* 11300 */  _(x,x), _(Bi,x), _(Bi,x), _(Vs,x),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
++  /* 11300 */ _(Bi,x), _(Bi,T), _(Bi,R), _(Vs,R),  _(x,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 11308 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(x,x),  _(x,x), _(VI,x),
+   /* 11310 */ _(VI,x),  _(x,x),  _(x,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11318 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11320 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11328 */  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11330 */  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(x,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11338 */  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(N,x),  _(A,x),  _(M,R),  _(M,R),
+   /* 11340 */  _(M,T),  _(M,R),  _(M,R),  _(M,R),  _(M,R),  _(x,x),  _(x,x),  _(M,L),
+   /* 11348 */  _(M,L),  _(x,x),  _(x,x), _(M,LR), _(M,LR),  _(V,R),  _(x,x),  _(x,x),
+   /* 11350 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(M,R),
+   /* 11358 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+-  /* 11360 */ _(VI,x), _(VI,x),  _(M,R),  _(M,R),  _(x,x),  _(x,x), _(Ca,x), _(Ca,x),
+-  /* 11368 */ _(Ca,x), _(Ca,x), _(Ca,x), _(Ca,x), _(Ca,x),  _(x,x),  _(x,x),  _(x,x),
+-  /* 11370 */ _(Ca,x), _(Ca,x), _(Ca,x), _(Ca,x), _(Ca,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 11360 */ _(VI,x), _(VI,x),  _(M,R),  _(M,R),  _(x,x),  _(x,x), _(Ca,T), _(Ca,T),
++  /* 11368 */ _(Ca,T), _(Ca,T), _(Ca,T), _(Ca,T), _(Ca,T),  _(x,x),  _(x,x),  _(x,x),
++  /* 11370 */ _(Ca,T), _(Ca,T), _(Ca,T), _(Ca,T), _(Ca,T),  _(x,x),  _(x,x),  _(x,x),
+ 
+-#define indic_offset_0x11480u 4112
++#define indic_offset_0x11480u 4224
+ 
+ 
+   /* Tirhuta */
+ 
+   /* 11480 */  _(x,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 11488 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(C,x),
+   /* 11490 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11498 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 114A0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 114A8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 114B0 */  _(M,R),  _(M,L),  _(M,R),  _(M,B),  _(M,B),  _(M,B),  _(M,B),  _(M,B),
+-  /* 114B8 */  _(M,B),  _(M,L),  _(M,T), _(M,TL), _(M,LR),  _(M,R), _(M,LR), _(Bi,x),
+-  /* 114C0 */ _(Bi,x), _(Vs,x),  _(V,B),  _(N,x),  _(A,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 114B8 */  _(M,B),  _(M,L),  _(M,T), _(M,TL), _(M,LR),  _(M,R), _(M,LR), _(Bi,T),
++  /* 114C0 */ _(Bi,T), _(Vs,R),  _(V,B),  _(N,B),  _(A,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 114C8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 114D0 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 114D8 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+-#define indic_offset_0x11580u 4208
++#define indic_offset_0x11580u 4320
+ 
+ 
+   /* Siddham */
+ 
+   /* 11580 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 11588 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),
+   /* 11590 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11598 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 115A0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 115A8 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(M,R),
+   /* 115B0 */  _(M,L),  _(M,R),  _(M,B),  _(M,B),  _(M,B),  _(M,B),  _(x,x),  _(x,x),
+-  /* 115B8 */  _(M,L), _(M,TL), _(M,LR),_(M,TLR), _(Bi,x), _(Bi,x), _(Vs,x),  _(V,B),
+-  /* 115C0 */  _(N,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+-
+-#define indic_offset_0x11600u 4280
+-
++  /* 115B8 */  _(M,L), _(M,TL), _(M,LR),_(M,TLR), _(Bi,T), _(Bi,T), _(Vs,R),  _(V,B),
++  /* 115C0 */  _(N,B),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 115C8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 115D0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 115D8 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(M,B),  _(M,B),  _(x,x),  _(x,x),
++  /* 115E0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 115E8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 115F0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 115F8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Modi */
+ 
+   /* 11600 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 11608 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),  _(C,x),  _(C,x),
+   /* 11610 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11618 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11620 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11628 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11630 */  _(M,R),  _(M,R),  _(M,R),  _(M,B),  _(M,B),  _(M,B),  _(M,B),  _(M,B),
+-  /* 11638 */  _(M,B),  _(M,T),  _(M,T),  _(M,R),  _(M,R), _(Bi,x), _(Vs,x),  _(V,B),
+-  /* 11640 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 11638 */  _(M,B),  _(M,T),  _(M,T),  _(M,R),  _(M,R), _(Bi,T), _(Vs,R),  _(V,B),
++  /* 11640 */  _(M,T),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 11648 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 11650 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 11658 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 11660 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 11668 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 11670 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 11678 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+   /* Takri */
+ 
+   /* 11680 */ _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x), _(VI,x),
+   /* 11688 */ _(VI,x), _(VI,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11690 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 11698 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+   /* 116A0 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
+-  /* 116A8 */  _(C,x),  _(C,x),  _(C,x), _(Bi,x), _(Vs,x),  _(M,T),  _(M,L),  _(M,R),
+-  /* 116B0 */  _(M,B),  _(M,B),  _(M,T),  _(M,T),  _(M,T),  _(M,T),  _(V,T),  _(N,x),
++  /* 116A8 */  _(C,x),  _(C,x),  _(C,x), _(Bi,T), _(Vs,R),  _(M,T),  _(M,L),  _(M,R),
++  /* 116B0 */  _(M,B),  _(M,B),  _(M,T),  _(M,T),  _(M,T),  _(M,T),  _(V,R),  _(N,B),
+   /* 116B8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+   /* 116C0 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
+   /* 116C8 */ _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 116D0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 116D8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 116E0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 116E8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 116F0 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 116F8 */  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
+ 
+-}; /* Table items: 4488; occupancy: 73% */
++  /* Ahom */
++
++  /* 11700 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
++  /* 11708 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
++  /* 11710 */  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),  _(C,x),
++  /* 11718 */  _(C,x),  _(C,x),  _(x,x),  _(x,x),  _(x,x), _(CM,B), _(CM,x), _(CM,T),
++  /* 11720 */  _(M,R),  _(M,R),  _(M,T),  _(M,T),  _(M,B),  _(M,B),  _(M,L),  _(M,T),
++  /* 11728 */  _(M,B),  _(M,T),  _(M,T), _(PK,T),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++  /* 11730 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),
++  /* 11738 */ _(Nd,x), _(Nd,x), _(Nd,x), _(Nd,x),  _(x,x),  _(x,x),  _(x,x),  _(x,x),
++
++}; /* Table items: 4768; occupancy: 72% */
+ 
+ INDIC_TABLE_ELEMENT_TYPE
+ hb_indic_get_categories (hb_codepoint_t u)
+ {
+   switch (u >> 12)
+   {
+     case 0x0u:
+       if (hb_in_range (u, 0x0028u, 0x003Fu)) return indic_table[u - 0x0028u + indic_offset_0x0028u];
+-      if (hb_in_range (u, 0x00D0u, 0x00D7u)) return indic_table[u - 0x00D0u + indic_offset_0x00d0u];
++      if (hb_in_range (u, 0x00B0u, 0x00D7u)) return indic_table[u - 0x00B0u + indic_offset_0x00b0u];
+       if (hb_in_range (u, 0x0900u, 0x0DF7u)) return indic_table[u - 0x0900u + indic_offset_0x0900u];
+       if (unlikely (u == 0x00A0u)) return _(CP,x);
+       break;
+ 
+     case 0x1u:
+       if (hb_in_range (u, 0x1000u, 0x109Fu)) return indic_table[u - 0x1000u + indic_offset_0x1000u];
+       if (hb_in_range (u, 0x1700u, 0x17EFu)) return indic_table[u - 0x1700u + indic_offset_0x1700u];
+       if (hb_in_range (u, 0x1900u, 0x1A9Fu)) return indic_table[u - 0x1900u + indic_offset_0x1900u];
+       if (hb_in_range (u, 0x1B00u, 0x1C4Fu)) return indic_table[u - 0x1B00u + indic_offset_0x1b00u];
+-      if (hb_in_range (u, 0x1CD0u, 0x1CF7u)) return indic_table[u - 0x1CD0u + indic_offset_0x1cd0u];
++      if (hb_in_range (u, 0x1CD0u, 0x1CFFu)) return indic_table[u - 0x1CD0u + indic_offset_0x1cd0u];
+       break;
+ 
+     case 0x2u:
+       if (hb_in_range (u, 0x2008u, 0x2017u)) return indic_table[u - 0x2008u + indic_offset_0x2008u];
++      if (hb_in_range (u, 0x2070u, 0x2087u)) return indic_table[u - 0x2070u + indic_offset_0x2070u];
+       if (unlikely (u == 0x25CCu)) return _(CP,x);
+       break;
+ 
+     case 0xAu:
+       if (hb_in_range (u, 0xA800u, 0xAAF7u)) return indic_table[u - 0xA800u + indic_offset_0xa800u];
+       if (hb_in_range (u, 0xABC0u, 0xABFFu)) return indic_table[u - 0xABC0u + indic_offset_0xabc0u];
+       break;
+ 
+     case 0x10u:
+       if (hb_in_range (u, 0x10A00u, 0x10A47u)) return indic_table[u - 0x10A00u + indic_offset_0x10a00u];
+       break;
+ 
+     case 0x11u:
+       if (hb_in_range (u, 0x11000u, 0x110BFu)) return indic_table[u - 0x11000u + indic_offset_0x11000u];
+       if (hb_in_range (u, 0x11100u, 0x11237u)) return indic_table[u - 0x11100u + indic_offset_0x11100u];
+-      if (hb_in_range (u, 0x112B0u, 0x11377u)) return indic_table[u - 0x112B0u + indic_offset_0x112b0u];
++      if (hb_in_range (u, 0x11280u, 0x11377u)) return indic_table[u - 0x11280u + indic_offset_0x11280u];
+       if (hb_in_range (u, 0x11480u, 0x114DFu)) return indic_table[u - 0x11480u + indic_offset_0x11480u];
+-      if (hb_in_range (u, 0x11580u, 0x115C7u)) return indic_table[u - 0x11580u + indic_offset_0x11580u];
+-      if (hb_in_range (u, 0x11600u, 0x116CFu)) return indic_table[u - 0x11600u + indic_offset_0x11600u];
++      if (hb_in_range (u, 0x11580u, 0x1173Fu)) return indic_table[u - 0x11580u + indic_offset_0x11580u];
+       break;
+ 
+     default:
+       break;
+   }
+   return _(x,x);
+ }
+ 
+@@ -909,32 +957,36 @@ hb_indic_get_categories (hb_codepoint_t 
+ #undef ISC_A
+ #undef ISC_Bi
+ #undef ISC_BJN
+ #undef ISC_Ca
+ #undef ISC_C
+ #undef ISC_CD
+ #undef ISC_CF
+ #undef ISC_CHL
++#undef ISC_CK
+ #undef ISC_CM
+ #undef ISC_CP
+ #undef ISC_CPR
++#undef ISC_CPrf
+ #undef ISC_CS
+ #undef ISC_CSR
++#undef ISC_CWS
+ #undef ISC_GM
+ #undef ISC_IS
+ #undef ISC_ZWJ
+ #undef ISC_ML
+ #undef ISC_ZWNJ
+ #undef ISC_N
+ #undef ISC_Nd
+ #undef ISC_NJ
+ #undef ISC_x
+ #undef ISC_PK
+ #undef ISC_RS
++#undef ISC_SM
+ #undef ISC_TL
+ #undef ISC_TM
+ #undef ISC_V
+ #undef ISC_Vs
+ #undef ISC_Vo
+ #undef ISC_M
+ #undef ISC_VI
+ 
+diff --git a/gfx/harfbuzz/src/hb-ot-shape-complex-indic.cc b/gfx/harfbuzz/src/hb-ot-shape-complex-indic.cc
+--- a/gfx/harfbuzz/src/hb-ot-shape-complex-indic.cc
++++ b/gfx/harfbuzz/src/hb-ot-shape-complex-indic.cc
+@@ -171,34 +171,18 @@ set_indic_properties (hb_glyph_info_t &i
+   indic_category_t cat = (indic_category_t) (type & 0x7Fu);
+   indic_position_t pos = (indic_position_t) (type >> 8);
+ 
+ 
+   /*
+    * Re-assign category
+    */
+ 
+-
+-  /* The spec says U+0952 is OT_A.  However, testing shows that Uniscribe
+-   * treats a whole bunch of characters similarly.
+-   * TESTS: For example, for U+0951:
+-   * U+092E,U+0947,U+0952
+-   * U+092E,U+0952,U+0947
+-   * U+092E,U+0947,U+0951
+-   * U+092E,U+0951,U+0947
+-   * U+092E,U+0951,U+0952
+-   * U+092E,U+0952,U+0951
+-   */
+-  if (unlikely (hb_in_ranges (u, 0x0951u, 0x0952u,
+-				 0x1CD0u, 0x1CD2u,
+-				 0x1CD4u, 0x1CE1u) ||
+-			    u == 0x1CF4u))
+-    cat = OT_A;
+   /* The following act more like the Bindus. */
+-  else if (unlikely (hb_in_range (u, 0x0953u, 0x0954u)))
++  if (unlikely (hb_in_range (u, 0x0953u, 0x0954u)))
+     cat = OT_SM;
+   /* The following act like consonants. */
+   else if (unlikely (hb_in_ranges (u, 0x0A72u, 0x0A73u,
+ 				      0x1CF5u, 0x1CF6u)))
+     cat = OT_C;
+   /* TODO: The following should only be allowed after a Visarga.
+    * For now, just treat them like regular tone marks. */
+   else if (unlikely (hb_in_range (u, 0x1CE2u, 0x1CE8u)))
+@@ -211,25 +195,22 @@ set_indic_properties (hb_glyph_info_t &i
+   /* The following take marks in standalone clusters, similar to Avagraha. */
+   else if (unlikely (hb_in_ranges (u, 0xA8F2u, 0xA8F7u,
+ 				      0x1CE9u, 0x1CECu,
+ 				      0x1CEEu, 0x1CF1u)))
+   {
+     cat = OT_Symbol;
+     ASSERT_STATIC ((int) INDIC_SYLLABIC_CATEGORY_AVAGRAHA == OT_Symbol);
+   }
+-  else if (unlikely (hb_in_range (u, 0x17CDu, 0x17D1u) ||
+-		     u == 0x17CBu || u == 0x17D3u || u == 0x17DDu)) /* Khmer Various signs */
++  else if (unlikely (u == 0x17DDu)) /* https://github.com/roozbehp/unicode-data/issues/2 */
+   {
+-    /* These are like Top Matras. */
+     cat = OT_M;
+     pos = POS_ABOVE_C;
+   }
+   else if (unlikely (u == 0x17C6u)) cat = OT_N; /* Khmer Bindu doesn't like to be repositioned. */
+-  else if (unlikely (u == 0x17D2u)) cat = OT_Coeng; /* Khmer coeng */
+   else if (unlikely (hb_in_range (u, 0x2010u, 0x2011u)))
+ 				    cat = OT_PLACEHOLDER;
+   else if (unlikely (u == 0x25CCu)) cat = OT_DOTTEDCIRCLE;
+   else if (unlikely (u == 0xA982u)) cat = OT_SM; /* Javanese repha. */
+   else if (unlikely (u == 0xA9BEu)) cat = OT_CM2; /* Javanese medial ya. */
+   else if (unlikely (u == 0xA9BDu)) { cat = OT_M; pos = POS_POST_C; } /* Javanese vocalic r. */
+ 
+ 
+@@ -552,18 +533,25 @@ data_create_indic (const hb_ot_shape_pla
+       indic_plan->config = &indic_configs[i];
+       break;
+     }
+ 
+   indic_plan->is_old_spec = indic_plan->config->has_old_spec && ((plan->map.chosen_script[0] & 0x000000FFu) != '2');
+   indic_plan->virama_glyph = (hb_codepoint_t) -1;
+ 
+   /* Use zero-context would_substitute() matching for new-spec of the main
+-   * Indic scripts, and scripts with one spec only, but not for old-specs. */
+-  bool zero_context = !indic_plan->is_old_spec;
++   * Indic scripts, and scripts with one spec only, but not for old-specs.
++   * The new-spec for all dual-spec scripts says zero-context matching happens.
++   *
++   * However, testing with Malayalam shows that old and new spec both allow
++   * context.  Testing with Bengali new-spec however shows that it doesn't.
++   * So, the heuristic here is the way it is.  It should *only* be changed,
++   * as we discover more cases of what Windows does.  DON'T TOUCH OTHERWISE.
++   */
++  bool zero_context = !indic_plan->is_old_spec && plan->props.script != HB_SCRIPT_MALAYALAM;
+   indic_plan->rphf.init (&plan->map, HB_TAG('r','p','h','f'), zero_context);
+   indic_plan->pref.init (&plan->map, HB_TAG('p','r','e','f'), zero_context);
+   indic_plan->blwf.init (&plan->map, HB_TAG('b','l','w','f'), zero_context);
+   indic_plan->pstf.init (&plan->map, HB_TAG('p','s','t','f'), zero_context);
+ 
+   for (unsigned int i = 0; i < ARRAY_LENGTH (indic_plan->mask_array); i++)
+     indic_plan->mask_array[i] = (indic_features[i].flags & F_GLOBAL) ?
+ 				 0 : plan->map.get_1_mask (indic_features[i].tag);
+@@ -1343,16 +1331,35 @@ final_reordering_syllable (const hb_ot_s
+ 		base++;
+ 	      info[base].indic_position() = POS_BASE_C;
+ 
+ 	      try_pref = false;
+ 	    }
+ 	    break;
+ 	  }
+       }
++      /* For Malayalam, skip over unformed below- (but NOT post-) forms. */
++      if (buffer->props.script == HB_SCRIPT_MALAYALAM)
++      {
++	for (unsigned int i = base + 1; i < end; i++)
++	{
++	  while (i < end && is_joiner (info[i]))
++	    i++;
++	  if (i == end || !is_halant_or_coeng (info[i]))
++	    break;
++	  i++; /* Skip halant. */
++	  while (i < end && is_joiner (info[i]))
++	    i++;
++	  if (i < end && is_consonant (info[i]) && info[i].indic_position() == POS_BELOW_C)
++	  {
++	    base = i;
++	    info[base].indic_position() = POS_BASE_C;
++	  }
++	}
++      }
+ 
+       if (start < base && info[base].indic_position() > POS_BASE_C)
+         base--;
+       break;
+     }
+   if (base == end && start < base &&
+       is_one_of (info[base - 1], FLAG (OT_ZWJ)))
+     base--;
+@@ -1801,33 +1808,33 @@ decompose_indic (const hb_ot_shape_norma
+     {
+       /* Ok, safe to use Uniscribe-style decomposition. */
+       *a = 0x0DD9u;
+       *b = ab;
+       return true;
+     }
+   }
+ 
+-  return c->unicode->decompose (ab, a, b);
++  return (bool) c->unicode->decompose (ab, a, b);
+ }
+ 
+ static bool
+ compose_indic (const hb_ot_shape_normalize_context_t *c,
+ 	       hb_codepoint_t  a,
+ 	       hb_codepoint_t  b,
+ 	       hb_codepoint_t *ab)
+ {
+   /* Avoid recomposing split matras. */
+   if (HB_UNICODE_GENERAL_CATEGORY_IS_MARK (c->unicode->general_category (a)))
+     return false;
+ 
+   /* Composition-exclusion exceptions that we want to recompose. */
+   if (a == 0x09AFu && b == 0x09BCu) { *ab = 0x09DFu; return true; }
+ 
+-  return c->unicode->compose (a, b, ab);
++  return (bool) c->unicode->compose (a, b, ab);
+ }
+ 
+ 
+ const hb_ot_complex_shaper_t _hb_ot_complex_shaper_indic =
+ {
+   "indic",
+   collect_features_indic,
+   override_features_indic,
+diff --git a/gfx/harfbuzz/src/hb-ot-shape-complex-myanmar.cc b/gfx/harfbuzz/src/hb-ot-shape-complex-myanmar.cc
+--- a/gfx/harfbuzz/src/hb-ot-shape-complex-myanmar.cc
++++ b/gfx/harfbuzz/src/hb-ot-shape-complex-myanmar.cc
+@@ -194,16 +194,20 @@ set_myanmar_properties (hb_glyph_info_t 
+     case 0x1004u: case 0x101Bu: case 0x105Au:
+       cat = (indic_category_t) OT_Ra;
+       break;
+ 
+     case 0x1032u: case 0x1036u:
+       cat = (indic_category_t) OT_A;
+       break;
+ 
++    case 0x1039u:
++      cat = (indic_category_t) OT_H;
++      break;
++
+     case 0x103Au:
+       cat = (indic_category_t) OT_As;
+       break;
+ 
+     case 0x1041u: case 0x1042u: case 0x1043u: case 0x1044u:
+     case 0x1045u: case 0x1046u: case 0x1047u: case 0x1048u:
+     case 0x1049u: case 0x1090u: case 0x1091u: case 0x1092u:
+     case 0x1093u: case 0x1094u: case 0x1095u: case 0x1096u:
+diff --git a/gfx/harfbuzz/src/hb-ot-shape-complex-private.hh b/gfx/harfbuzz/src/hb-ot-shape-complex-private.hh
+--- a/gfx/harfbuzz/src/hb-ot-shape-complex-private.hh
++++ b/gfx/harfbuzz/src/hb-ot-shape-complex-private.hh
+@@ -39,19 +39,17 @@
+ #define complex_var_u8_1()	var2.u8[3]
+ 
+ 
+ enum hb_ot_shape_zero_width_marks_type_t {
+   HB_OT_SHAPE_ZERO_WIDTH_MARKS_NONE,
+ //  HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_UNICODE_EARLY,
+   HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_UNICODE_LATE,
+   HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_EARLY,
+-  HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE,
+-
+-  HB_OT_SHAPE_ZERO_WIDTH_MARKS_DEFAULT = HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_UNICODE_LATE
++  HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE
+ };
+ 
+ 
+ /* Master OT shaper list */
+ #define HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS \
+   HB_COMPLEX_SHAPER_IMPLEMENT (default) /* should be first */ \
+   HB_COMPLEX_SHAPER_IMPLEMENT (arabic) \
+   HB_COMPLEX_SHAPER_IMPLEMENT (hangul) \
+diff --git a/gfx/harfbuzz/src/hb-ot-shape-complex-thai.cc b/gfx/harfbuzz/src/hb-ot-shape-complex-thai.cc
+--- a/gfx/harfbuzz/src/hb-ot-shape-complex-thai.cc
++++ b/gfx/harfbuzz/src/hb-ot-shape-complex-thai.cc
+@@ -372,11 +372,11 @@ const hb_ot_complex_shaper_t _hb_ot_comp
+   NULL, /* data_create */
+   NULL, /* data_destroy */
+   preprocess_text_thai,
+   NULL, /* postprocess_glyphs */
+   HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT,
+   NULL, /* decompose */
+   NULL, /* compose */
+   NULL, /* setup_masks */
+-  HB_OT_SHAPE_ZERO_WIDTH_MARKS_DEFAULT,
++  HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_UNICODE_LATE,
+   false,/* fallback_position */
+ };
+diff --git a/gfx/harfbuzz/src/hb-ot-shape-complex-tibetan.cc b/gfx/harfbuzz/src/hb-ot-shape-complex-tibetan.cc
+--- a/gfx/harfbuzz/src/hb-ot-shape-complex-tibetan.cc
++++ b/gfx/harfbuzz/src/hb-ot-shape-complex-tibetan.cc
+@@ -52,11 +52,11 @@ const hb_ot_complex_shaper_t _hb_ot_comp
+   NULL, /* data_create */
+   NULL, /* data_destroy */
+   NULL, /* preprocess_text */
+   NULL, /* postprocess_glyphs */
+   HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT,
+   NULL, /* decompose */
+   NULL, /* compose */
+   NULL, /* setup_masks */
+-  HB_OT_SHAPE_ZERO_WIDTH_MARKS_DEFAULT,
++  HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_UNICODE_LATE,
+   true, /* fallback_position */
+ };
+diff --git a/gfx/harfbuzz/src/hb-ot-shape-complex-use.cc b/gfx/harfbuzz/src/hb-ot-shape-complex-use.cc
+--- a/gfx/harfbuzz/src/hb-ot-shape-complex-use.cc
++++ b/gfx/harfbuzz/src/hb-ot-shape-complex-use.cc
+@@ -280,16 +280,19 @@ setup_rphf_mask (const hb_ot_shape_plan_
+       info[i].mask |= mask;
+   }
+ }
+ 
+ static void
+ setup_topographical_masks (const hb_ot_shape_plan_t *plan,
+ 			   hb_buffer_t *buffer)
+ {
++  const use_shape_plan_t *use_plan = (const use_shape_plan_t *) plan->data;
++  if (use_plan->arabic_plan)
++    return;
+ 
+   ASSERT_STATIC (INIT < 4 && ISOL < 4 && MEDI < 4 && FINA < 4);
+   hb_mask_t masks[4], all_masks = 0;
+   for (unsigned int i = 0; i < 4; i++)
+   {
+     masks[i] = plan->map.get_1_mask (arabic_features[i]);
+     if (masks[i] == plan->map.get_global_mask ())
+       masks[i] = 0;
+@@ -355,17 +358,17 @@ setup_syllables (const hb_ot_shape_plan_
+ static void
+ clear_substitution_flags (const hb_ot_shape_plan_t *plan,
+ 			  hb_font_t *font HB_UNUSED,
+ 			  hb_buffer_t *buffer)
+ {
+   hb_glyph_info_t *info = buffer->info;
+   unsigned int count = buffer->len;
+   for (unsigned int i = 0; i < count; i++)
+-    _hb_glyph_info_clear_substituted_and_ligated_and_multiplied (&info[i]);
++    _hb_glyph_info_clear_substituted (&info[i]);
+ }
+ 
+ static void
+ record_rphf (const hb_ot_shape_plan_t *plan,
+ 	     hb_font_t *font,
+ 	     hb_buffer_t *buffer)
+ {
+   const use_shape_plan_t *use_plan = (const use_shape_plan_t *) plan->data;
+@@ -400,66 +403,71 @@ record_pref (const hb_ot_shape_plan_t *p
+       if (_hb_glyph_info_substituted (&info[i]))
+       {
+ 	info[i].use_category() = USE_VPre;
+ 	break;
+       }
+   }
+ }
+ 
++static inline bool
++is_halant (const hb_glyph_info_t &info)
++{
++  return info.use_category() == USE_H && !_hb_glyph_info_ligated (&info);
++}
++
+ static void
+ reorder_syllable (hb_buffer_t *buffer, unsigned int start, unsigned int end)
+ {
+   syllable_type_t syllable_type = (syllable_type_t) (buffer->info[start].syllable() & 0x0F);
+   /* Only a few syllable types need reordering. */
+   if (unlikely (!(FLAG_SAFE (syllable_type) &
+ 		  (FLAG (virama_terminated_cluster) |
+ 		   FLAG (consonant_cluster) |
+ 		   FLAG (vowel_cluster) |
+ 		   FLAG (broken_cluster) |
+ 		   0))))
+     return;
+ 
+   hb_glyph_info_t *info = buffer->info;
+ 
+-#define HALANT_FLAGS FLAG(USE_H)
+ #define BASE_FLAGS (FLAG (USE_B) | FLAG (USE_GB) | FLAG (USE_IV))
+ 
+   /* Move things forward. */
+   if (info[start].use_category() == USE_R && end - start > 1)
+   {
+     /* Got a repha.  Reorder it to after first base, before first halant. */
+     for (unsigned int i = start + 1; i < end; i++)
+-      if (FLAG_UNSAFE (info[i].use_category()) & (HALANT_FLAGS | BASE_FLAGS))
++      if ((FLAG_UNSAFE (info[i].use_category()) & (BASE_FLAGS)) || is_halant (info[i]))
+       {
+ 	/* If we hit a halant, move before it; otherwise it's a base: move to it's
+ 	 * place, and shift things in between backward. */
+ 
+-	if (info[i].use_category() == USE_H)
++	if (is_halant (info[i]))
+ 	  i--;
+ 
+ 	buffer->merge_clusters (start, i + 1);
+ 	hb_glyph_info_t t = info[start];
+ 	memmove (&info[start], &info[start + 1], (i - start) * sizeof (info[0]));
+ 	info[i] = t;
+ 
+ 	break;
+       }
+   }
+ 
+   /* Move things back. */
+   unsigned int j = end;
+   for (unsigned int i = start; i < end; i++)
+   {
+     uint32_t flag = FLAG_UNSAFE (info[i].use_category());
+-    if (flag & (HALANT_FLAGS | BASE_FLAGS))
++    if ((flag & (BASE_FLAGS)) || is_halant (info[i]))
+     {
+-      /* If we hit a halant, move before it; otherwise it's a base: move to it's
++      /* If we hit a halant, move after it; otherwise it's a base: move to it's
+        * place, and shift things in between backward. */
+-      if (info[i].use_category() == USE_H)
++      if (is_halant (info[i]))
+ 	j = i + 1;
+       else
+ 	j = i;
+     }
+     else if (((flag) & (FLAG (USE_VPre) | FLAG (USE_VMPre))) &&
+ 	     /* Only move the first component of a MultipleSubst. */
+ 	     0 == _hb_glyph_info_get_lig_comp (&info[i]) &&
+ 	     j < i)
+@@ -553,17 +561,17 @@ compose_use (const hb_ot_shape_normalize
+ 	     hb_codepoint_t  a,
+ 	     hb_codepoint_t  b,
+ 	     hb_codepoint_t *ab)
+ {
+   /* Avoid recomposing split matras. */
+   if (HB_UNICODE_GENERAL_CATEGORY_IS_MARK (c->unicode->general_category (a)))
+     return false;
+ 
+-  return c->unicode->compose (a, b, ab);
++  return (bool)c->unicode->compose (a, b, ab);
+ }
+ 
+ 
+ const hb_ot_complex_shaper_t _hb_ot_complex_shaper_use =
+ {
+   "use",
+   collect_features_use,
+   NULL, /* override_features */
+diff --git a/gfx/harfbuzz/src/hb-ot-shape-normalize.cc b/gfx/harfbuzz/src/hb-ot-shape-normalize.cc
+--- a/gfx/harfbuzz/src/hb-ot-shape-normalize.cc
++++ b/gfx/harfbuzz/src/hb-ot-shape-normalize.cc
+@@ -71,26 +71,26 @@
+  */
+ 
+ static bool
+ decompose_unicode (const hb_ot_shape_normalize_context_t *c,
+ 		   hb_codepoint_t  ab,
+ 		   hb_codepoint_t *a,
+ 		   hb_codepoint_t *b)
+ {
+-  return c->unicode->decompose (ab, a, b);
++  return (bool) c->unicode->decompose (ab, a, b);
+ }
+ 
+ static bool
+ compose_unicode (const hb_ot_shape_normalize_context_t *c,
+ 		 hb_codepoint_t  a,
+ 		 hb_codepoint_t  b,
+ 		 hb_codepoint_t *ab)
+ {
+-  return c->unicode->compose (a, b, ab);
++  return (bool) c->unicode->compose (a, b, ab);
+ }
+ 
+ static inline void
+ set_glyph (hb_glyph_info_t &info, hb_font_t *font)
+ {
+   font->get_glyph (info.codepoint, 0, &info.glyph_index());
+ }
+ 
+@@ -122,17 +122,17 @@ decompose (const hb_ot_shape_normalize_c
+   hb_codepoint_t a, b, a_glyph, b_glyph;
+   hb_buffer_t * const buffer = c->buffer;
+   hb_font_t * const font = c->font;
+ 
+   if (!c->decompose (c, ab, &a, &b) ||
+       (b && !font->get_glyph (b, 0, &b_glyph)))
+     return 0;
+ 
+-  bool has_a = font->get_glyph (a, 0, &a_glyph);
++  bool has_a = (bool) font->get_glyph (a, 0, &a_glyph);
+   if (shortest && has_a) {
+     /* Output a and b */
+     output_char (buffer, a, a_glyph);
+     if (likely (b)) {
+       output_char (buffer, b, b_glyph);
+       return 2;
+     }
+     return 1;
+diff --git a/gfx/harfbuzz/src/hb-ot-shape.cc b/gfx/harfbuzz/src/hb-ot-shape.cc
+--- a/gfx/harfbuzz/src/hb-ot-shape.cc
++++ b/gfx/harfbuzz/src/hb-ot-shape.cc
+@@ -657,42 +657,43 @@ hb_ot_position_default (hb_ot_shape_cont
+   unsigned int count = c->buffer->len;
+   hb_glyph_info_t *info = c->buffer->info;
+   hb_glyph_position_t *pos = c->buffer->pos;
+ 
+   if (HB_DIRECTION_IS_HORIZONTAL (direction))
+   {
+     for (unsigned int i = 0; i < count; i++)
+       pos[i].x_advance = c->font->get_glyph_h_advance (info[i].codepoint);
++    /* The nil glyph_h_origin() func returns 0, so no need to apply it. */
+     if (c->font->has_glyph_h_origin_func ())
+       for (unsigned int i = 0; i < count; i++)
+ 	c->font->subtract_glyph_h_origin (info[i].codepoint,
+ 					  &pos[i].x_offset,
+ 					  &pos[i].y_offset);
+   }
+   else
+   {
+     for (unsigned int i = 0; i < count; i++)
++    {
+       pos[i].y_advance = c->font->get_glyph_v_advance (info[i].codepoint);
+-    if (c->font->has_glyph_v_origin_func ())
+-      for (unsigned int i = 0; i < count; i++)
+-	c->font->subtract_glyph_v_origin (info[i].codepoint,
+-					  &pos[i].x_offset,
+-					  &pos[i].y_offset);
++      c->font->subtract_glyph_v_origin (info[i].codepoint,
++					&pos[i].x_offset,
++					&pos[i].y_offset);
++    }
+   }
+   if (c->buffer->scratch_flags & HB_BUFFER_SCRATCH_FLAG_HAS_SPACE_FALLBACK)
+     _hb_ot_shape_fallback_spaces (c->plan, c->font, c->buffer);
+ }
+ 
+ static inline bool
+ hb_ot_position_complex (hb_ot_shape_context_t *c)
+ {
+   bool ret = false;
+   unsigned int count = c->buffer->len;
+-  bool has_positioning = hb_ot_layout_has_positioning (c->face);
++  bool has_positioning = (bool) hb_ot_layout_has_positioning (c->face);
+   /* If the font has no GPOS, AND, no fallback positioning will
+    * happen, AND, direction is forward, then when zeroing mark
+    * widths, we shift the mark with it, such that the mark
+    * is positioned hanging over the previous glyph.  When
+    * direction is backward we don't shift and it will end up
+    * hanging over the next glyph after the final reordering.
+    * If fallback positinoing happens or GPOS is present, we don't
+    * care.
+@@ -721,24 +722,26 @@ hb_ot_position_complex (hb_ot_shape_cont
+ 
+   if (has_positioning)
+   {
+     hb_glyph_info_t *info = c->buffer->info;
+     hb_glyph_position_t *pos = c->buffer->pos;
+ 
+     /* Change glyph origin to what GPOS expects (horizontal), apply GPOS, change it back. */
+ 
++    /* The nil glyph_h_origin() func returns 0, so no need to apply it. */
+     if (c->font->has_glyph_h_origin_func ())
+       for (unsigned int i = 0; i < count; i++)
+ 	c->font->add_glyph_h_origin (info[i].codepoint,
+ 				     &pos[i].x_offset,
+ 				     &pos[i].y_offset);
+ 
+     c->plan->position (c->font, c->buffer);
+ 
++    /* The nil glyph_h_origin() func returns 0, so no need to apply it. */
+     if (c->font->has_glyph_h_origin_func ())
+       for (unsigned int i = 0; i < count; i++)
+ 	c->font->subtract_glyph_h_origin (info[i].codepoint,
+ 					  &pos[i].x_offset,
+ 					  &pos[i].y_offset);
+ 
+     ret = true;
+   }
+@@ -847,16 +850,18 @@ hb_bool_t
+   hb_ot_shape_context_t c = {HB_SHAPER_DATA_GET (shape_plan), font, font->face, buffer, features, num_features};
+   hb_ot_shape_internal (&c);
+ 
+   return true;
+ }
+ 
+ 
+ /**
++ * hb_ot_shape_plan_collect_lookups:
++ *
+  * Since: 0.9.7
+  **/
+ void
+ hb_ot_shape_plan_collect_lookups (hb_shape_plan_t *shape_plan,
+ 				  hb_tag_t         table_tag,
+ 				  hb_set_t        *lookup_indexes /* OUT */)
+ {
+   /* XXX Does the first part always succeed? */
+@@ -880,16 +885,18 @@ add_char (hb_font_t          *font,
+     hb_codepoint_t m = unicode->mirroring (u);
+     if (m != u && font->get_glyph (m, 0, &glyph))
+       glyphs->add (glyph);
+   }
+ }
+ 
+ 
+ /**
++ * hb_ot_shape_glyphs_closure:
++ *
+  * Since: 0.9.2
+  **/
+ void
+ hb_ot_shape_glyphs_closure (hb_font_t          *font,
+ 			    hb_buffer_t        *buffer,
+ 			    const hb_feature_t *features,
+ 			    unsigned int        num_features,
+ 			    hb_set_t           *glyphs)
+diff --git a/gfx/harfbuzz/src/hb-ot-shape.h b/gfx/harfbuzz/src/hb-ot-shape.h
+--- a/gfx/harfbuzz/src/hb-ot-shape.h
++++ b/gfx/harfbuzz/src/hb-ot-shape.h
+@@ -31,23 +31,23 @@
+ #ifndef HB_OT_SHAPE_H
+ #define HB_OT_SHAPE_H
+ 
+ #include "hb.h"
+ 
+ HB_BEGIN_DECLS
+ 
+ /* TODO port to shape-plan / set. */
+-void
++HB_EXTERN void
+ hb_ot_shape_glyphs_closure (hb_font_t          *font,
+ 			    hb_buffer_t        *buffer,
+ 			    const hb_feature_t *features,
+ 			    unsigned int        num_features,
+ 			    hb_set_t           *glyphs);
+ 
+-void
++HB_EXTERN void
+ hb_ot_shape_plan_collect_lookups (hb_shape_plan_t *shape_plan,
+ 				  hb_tag_t         table_tag,
+ 				  hb_set_t        *lookup_indexes /* OUT */);
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_OT_SHAPE_H */
+diff --git a/gfx/harfbuzz/src/hb-ot-tag.cc b/gfx/harfbuzz/src/hb-ot-tag.cc
+--- a/gfx/harfbuzz/src/hb-ot-tag.cc
++++ b/gfx/harfbuzz/src/hb-ot-tag.cc
+@@ -350,17 +350,16 @@ static const LangTag ot_languages[] = {
+   {"guz",	HB_TAG('G','U','Z',' ')},	/* Ekegusii/Gusii */
+   {"gv",	HB_TAG('M','N','X',' ')},	/* Manx */
+   {"ha",	HB_TAG('H','A','U',' ')},	/* Hausa */
+   {"har",	HB_TAG('H','R','I',' ')},	/* Harari */
+   {"haw",	HB_TAG('H','A','W',' ')},	/* Hawaiian */
+   {"hay",	HB_TAG('H','A','Y',' ')},	/* Haya */
+   {"haz",	HB_TAG('H','A','Z',' ')},	/* Hazaragi */
+   {"he",	HB_TAG('I','W','R',' ')},	/* Hebrew */
+-  {"hz",	HB_TAG('H','E','R',' ')},	/* Herero */
+   {"hi",	HB_TAG('H','I','N',' ')},	/* Hindi */
+   {"hil",	HB_TAG('H','I','L',' ')},	/* Hiligaynon */
+   {"hnd",	HB_TAG('H','N','D',' ')},	/* [Southern] Hindko */
+   {"hne",	HB_TAG('C','H','H',' ')},	/* Chattisgarhi */
+   {"hno",	HB_TAG('H','N','D',' ')},	/* [Northern] Hindko */
+   {"ho",	HB_TAG('H','M','O',' ')},	/* Hiri Motu */
+   {"hoc",	HB_TAG('H','O',' ',' ')},	/* Ho */
+   {"hoj",	HB_TAG('H','A','R',' ')},	/* Harauti */
+@@ -596,18 +595,18 @@ static const LangTag ot_languages[] = {
+   {"rue",	HB_TAG('R','S','Y',' ')},	/* Rusyn */
+   {"rup",	HB_TAG('R','U','P',' ')},	/* Aromanian/Arumanian/Macedo-Romanian */
+   {"rw",	HB_TAG('R','U','A',' ')},	/* Kinyarwanda */
+   {"rwr",	HB_TAG('M','A','W',' ')},	/* Marwari (India) */
+   {"sa",	HB_TAG('S','A','N',' ')},	/* Sanskrit */
+   {"sah",	HB_TAG('Y','A','K',' ')},	/* Yakut */
+   {"sas",	HB_TAG('S','A','S',' ')},	/* Sasak */
+   {"sat",	HB_TAG('S','A','T',' ')},	/* Santali */
++  {"sc",	HB_TAG('S','R','D',' ')},	/* Sardinian [macrolanguage] */
+   {"sck",	HB_TAG('S','A','D',' ')},	/* Sadri */
+-  {"sc",	HB_TAG('S','R','D',' ')},	/* Sardinian [macrolanguage] */
+   {"scn",	HB_TAG('S','C','N',' ')},	/* Sicilian */
+   {"sco",	HB_TAG('S','C','O',' ')},	/* Scots */
+   {"scs",	HB_TAG('S','L','A',' ')},	/* [North] Slavey */
+   {"sd",	HB_TAG('S','N','D',' ')},	/* Sindhi */
+   {"se",	HB_TAG('N','S','M',' ')},	/* Northern Sami */
+   {"seh",	HB_TAG('S','N','A',' ')},	/* Sena */
+   {"sel",	HB_TAG('S','E','L',' ')},	/* Selkup */
+   {"sg",	HB_TAG('S','G','O',' ')},	/* Sango */
+@@ -685,29 +684,29 @@ static const LangTag ot_languages[] = {
+   {"umb",	HB_TAG('U','M','B',' ')},	/* Umbundu */
+   {"unr",	HB_TAG('M','U','N',' ')},	/* Mundari */
+   {"ur",	HB_TAG('U','R','D',' ')},	/* Urdu */
+   {"uz",	HB_TAG('U','Z','B',' ')},	/* Uzbek [macrolanguage] */
+   {"uzn",	HB_TAG('U','Z','B',' ')},	/* Northern Uzbek */
+   {"uzs",	HB_TAG('U','Z','B',' ')},	/* Southern Uzbek */
+   {"ve",	HB_TAG('V','E','N',' ')},	/* Venda */
+   {"vec",	HB_TAG('V','E','C',' ')},	/* Venetian */
++  {"vi",	HB_TAG('V','I','T',' ')},	/* Vietnamese */
+   {"vls",	HB_TAG('F','L','E',' ')},	/* Vlaams */
+-  {"vi",	HB_TAG('V','I','T',' ')},	/* Vietnamese */
+   {"vmw",	HB_TAG('M','A','K',' ')},	/* Makhuwa */
+   {"vo",	HB_TAG('V','O','L',' ')},	/* Volapük */
+   {"vro",	HB_TAG('V','R','O',' ')},	/* Võro */
+   {"wa",	HB_TAG('W','L','N',' ')},	/* Walloon */
+   {"war",	HB_TAG('W','A','R',' ')},	/* Waray (Philippines) */
+   {"wbm",	HB_TAG('W','A',' ',' ')},	/* Wa */
+   {"wbr",	HB_TAG('W','A','G',' ')},	/* Wagdi */
+   {"wle",	HB_TAG('S','I','G',' ')},	/* Wolane */
++  {"wo",	HB_TAG('W','L','F',' ')},	/* Wolof */
+   {"wry",	HB_TAG('M','A','W',' ')},	/* Merwari */
+   {"wtm",	HB_TAG('W','T','M',' ')},	/* Mewati */
+-  {"wo",	HB_TAG('W','L','F',' ')},	/* Wolof */
+   {"xal",	HB_TAG('K','L','M',' ')},	/* Kalmyk */
+   {"xh",	HB_TAG('X','H','S',' ')},	/* Xhosa */
+   {"xog",	HB_TAG('X','O','G',' ')},	/* Soga */
+   {"xom",	HB_TAG('K','M','O',' ')},	/* Komo (Sudan) */
+   {"xsl",	HB_TAG('S','S','L',' ')},	/* South Slavey */
+   {"xst",	HB_TAG('S','I','G',' ')},	/* Silt'e (retired code) */
+   {"xwo",	HB_TAG('T','O','D',' ')},	/* Written Oirat (Todo) */
+   {"yao",	HB_TAG('Y','A','O',' ')},	/* Yao */
+@@ -923,9 +922,32 @@ hb_ot_tag_to_language (hb_tag_t tag)
+     buf[9] = tag & 0xFF;
+     if (buf[9] == 0x20)
+       buf[9] = '\0';
+     buf[10] = '\0';
+     return hb_language_from_string ((char *) buf, -1);
+   }
+ }
+ 
++static inline void
++test_langs_sorted (void)
++{
++  for (unsigned int i = 1; i < ARRAY_LENGTH (ot_languages); i++)
++  {
++    int c = lang_compare_first_component (ot_languages[i-1].language, ot_languages[i].language);
++    if (c >= 0)
++    {
++      fprintf (stderr, "ot_languages not sorted at index %d: %s %d %s\n",
++	       i, ot_languages[i-1].language, c, ot_languages[i].language);
++      abort();
++    }
++  }
++}
+ 
++#ifdef MAIN
++int
++main (void)
++{
++  test_langs_sorted ();
++  return 0;
++}
++
++#endif
+diff --git a/gfx/harfbuzz/src/hb-ot-tag.h b/gfx/harfbuzz/src/hb-ot-tag.h
+--- a/gfx/harfbuzz/src/hb-ot-tag.h
++++ b/gfx/harfbuzz/src/hb-ot-tag.h
+@@ -34,26 +34,26 @@
+ #include "hb.h"
+ 
+ HB_BEGIN_DECLS
+ 
+ 
+ #define HB_OT_TAG_DEFAULT_SCRIPT	HB_TAG ('D', 'F', 'L', 'T')
+ #define HB_OT_TAG_DEFAULT_LANGUAGE	HB_TAG ('d', 'f', 'l', 't')
+ 
+-void
++HB_EXTERN void
+ hb_ot_tags_from_script (hb_script_t  script,
+ 			hb_tag_t    *script_tag_1,
+ 			hb_tag_t    *script_tag_2);
+ 
+-hb_script_t
++HB_EXTERN hb_script_t
+ hb_ot_tag_to_script (hb_tag_t tag);
+ 
+-hb_tag_t
++HB_EXTERN hb_tag_t
+ hb_ot_tag_from_language (hb_language_t language);
+ 
+-hb_language_t
++HB_EXTERN hb_language_t
+ hb_ot_tag_to_language (hb_tag_t tag);
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_OT_TAG_H */
+diff --git a/gfx/harfbuzz/src/hb-private.hh b/gfx/harfbuzz/src/hb-private.hh
+--- a/gfx/harfbuzz/src/hb-private.hh
++++ b/gfx/harfbuzz/src/hb-private.hh
+@@ -48,19 +48,16 @@
+ /* We only use these two for debug output.  However, the debug code is
+  * always seen by the compiler (and optimized out in non-debug builds.
+  * If including these becomes a problem, we can start thinking about
+  * someway around that. */
+ #include <stdio.h>
+ #include <errno.h>
+ #include <stdarg.h>
+ 
+-#ifdef _MSC_VER
+-#include <windows.h> /* ensure DEFINE_ENUM_FLAG_OPERATORS is defined */
+-#endif
+ 
+ /* Compile-time custom allocator support. */
+ 
+ #if defined(hb_malloc_impl) \
+  && defined(hb_calloc_impl) \
+  && defined(hb_realloc_impl) \
+  && defined(hb_free_impl)
+ extern "C" void* hb_malloc_impl(size_t size);
+@@ -177,16 +174,19 @@ extern "C" void  hb_free_impl(void *ptr)
+ #      define setlocale(Category, Locale) "C"
+ static int errno = 0; /* Use something better? */
+ #    endif
+ #  elif defined(WINAPI_FAMILY) && (WINAPI_FAMILY==WINAPI_FAMILY_PC_APP || WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP)
+ #    define getenv(Name) NULL
+ #  endif
+ #  if defined(_MSC_VER) && _MSC_VER < 1900
+ #    define snprintf _snprintf
++#  elif defined(_MSC_VER) && _MSC_VER >= 1900
++#    /* Covers VC++ Error for strdup being a deprecated POSIX name and to instead use _strdup instead */
++#    define strdup _strdup
+ #  endif
+ #endif
+ 
+ #if HAVE_ATEXIT
+ /* atexit() is only safe to be called from shared libraries on certain
+  * platforms.  Whitelist.
+  * https://bugs.freedesktop.org/show_bug.cgi?id=82246 */
+ #  if defined(__linux) && defined(__GLIBC_PREREQ)
+@@ -894,37 +894,32 @@ hb_in_ranges (T u, T lo1, T hi1, T lo2, 
+ }
+ 
+ 
+ /* Enable bitwise ops on enums marked as flags_t */
+ /* To my surprise, looks like the function resolver is happy to silently cast
+  * one enum to another...  So this doesn't provide the type-checking that I
+  * originally had in mind... :(.
+  *
+- * On MSVC use DEFINE_ENUM_FLAG_OPERATORS.  See:
+- * https://github.com/behdad/harfbuzz/pull/163
++ * For MSVC warnings, see: https://github.com/behdad/harfbuzz/pull/163
+  */
+ #ifdef _MSC_VER
+ # pragma warning(disable:4200)
+ # pragma warning(disable:4800)
+-# define HB_MARK_AS_FLAG_T(flags_t)	DEFINE_ENUM_FLAG_OPERATORS (##flags_t##);
+-#else
+-# define HB_MARK_AS_FLAG_T(flags_t)	template <> class hb_mark_as_flags_t<flags_t> {};
+-template <class T> class hb_mark_as_flags_t;
+-template <class T> static inline T operator | (T l, T r)
+-{ hb_mark_as_flags_t<T> unused HB_UNUSED; return T ((unsigned int) l | (unsigned int) r); }
+-template <class T> static inline T operator & (T l, T r)
+-{ hb_mark_as_flags_t<T> unused HB_UNUSED; return T ((unsigned int) l & (unsigned int) r); }
+-template <class T> static inline T operator ~ (T r)
+-{ hb_mark_as_flags_t<T> unused HB_UNUSED; return T (~(unsigned int) r); }
+-template <class T> static inline T& operator |= (T &l, T r)
+-{ hb_mark_as_flags_t<T> unused HB_UNUSED; l = l | r; return l; }
+-template <class T> static inline T& operator &= (T& l, T r)
+-{ hb_mark_as_flags_t<T> unused HB_UNUSED; l = l & r; return l; }
+ #endif
++#define HB_MARK_AS_FLAG_T(T) \
++	extern "C++" { \
++	  static inline T operator | (T l, T r) { return T ((unsigned) l | (unsigned) r); } \
++	  static inline T operator & (T l, T r) { return T ((unsigned) l & (unsigned) r); } \
++	  static inline T operator ^ (T l, T r) { return T ((unsigned) l ^ (unsigned) r); } \
++	  static inline T operator ~ (T r) { return T (~(unsigned int) r); } \
++	  static inline T& operator |= (T &l, T r) { l = l | r; return l; } \
++	  static inline T& operator &= (T& l, T r) { l = l & r; return l; } \
++	  static inline T& operator ^= (T& l, T r) { l = l ^ r; return l; } \
++	}
+ 
+ 
+ /* Useful for set-operations on small enums.
+  * For example, for testing "x ∈ {x1, x2, x3}" use:
+  * (FLAG_SAFE(x) & (FLAG(x1) | FLAG(x2) | FLAG(x3)))
+  */
+ #define FLAG(x) (ASSERT_STATIC_EXPR_ZERO ((x) < 32) + (1U << (x)))
+ #define FLAG_SAFE(x) (1U << (x))
+@@ -1005,10 +1000,12 @@ static inline hb_options_t
+ hb_options (void)
+ {
+   if (unlikely (!_hb_options.i))
+     _hb_options_init ();
+ 
+   return _hb_options.opts;
+ }
+ 
++/* Size signifying variable-sized array */
++#define VAR 1
+ 
+ #endif /* HB_PRIVATE_HH */
+diff --git a/gfx/harfbuzz/src/hb-set.h b/gfx/harfbuzz/src/hb-set.h
+--- a/gfx/harfbuzz/src/hb-set.h
++++ b/gfx/harfbuzz/src/hb-set.h
+@@ -39,119 +39,119 @@ HB_BEGIN_DECLS
+ /*
+  * Since: 0.9.21
+  */
+ #define HB_SET_VALUE_INVALID ((hb_codepoint_t) -1)
+ 
+ typedef struct hb_set_t hb_set_t;
+ 
+ 
+-hb_set_t *
++HB_EXTERN hb_set_t *
+ hb_set_create (void);
+ 
+-hb_set_t *
++HB_EXTERN hb_set_t *
+ hb_set_get_empty (void);
+ 
+-hb_set_t *
++HB_EXTERN hb_set_t *
+ hb_set_reference (hb_set_t *set);
+ 
+-void
++HB_EXTERN void
+ hb_set_destroy (hb_set_t *set);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_set_set_user_data (hb_set_t           *set,
+ 		      hb_user_data_key_t *key,
+ 		      void *              data,
+ 		      hb_destroy_func_t   destroy,
+ 		      hb_bool_t           replace);
+ 
+-void *
++HB_EXTERN void *
+ hb_set_get_user_data (hb_set_t           *set,
+ 		      hb_user_data_key_t *key);
+ 
+ 
+ /* Returns false if allocation has failed before */
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_set_allocation_successful (const hb_set_t *set);
+ 
+-void
++HB_EXTERN void
+ hb_set_clear (hb_set_t *set);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_set_is_empty (const hb_set_t *set);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_set_has (const hb_set_t *set,
+ 	    hb_codepoint_t  codepoint);
+ 
+ /* Right now limited to 16-bit integers.  Eventually will do full codepoint range, sans -1
+  * which we will use as a sentinel. */
+-void
++HB_EXTERN void
+ hb_set_add (hb_set_t       *set,
+ 	    hb_codepoint_t  codepoint);
+ 
+-void
++HB_EXTERN void
+ hb_set_add_range (hb_set_t       *set,
+ 		  hb_codepoint_t  first,
+ 		  hb_codepoint_t  last);
+ 
+-void
++HB_EXTERN void
+ hb_set_del (hb_set_t       *set,
+ 	    hb_codepoint_t  codepoint);
+ 
+-void
++HB_EXTERN void
+ hb_set_del_range (hb_set_t       *set,
+ 		  hb_codepoint_t  first,
+ 		  hb_codepoint_t  last);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_set_is_equal (const hb_set_t *set,
+ 		 const hb_set_t *other);
+ 
+-void
++HB_EXTERN void
+ hb_set_set (hb_set_t       *set,
+ 	    const hb_set_t *other);
+ 
+-void
++HB_EXTERN void
+ hb_set_union (hb_set_t       *set,
+ 	      const hb_set_t *other);
+ 
+-void
++HB_EXTERN void
+ hb_set_intersect (hb_set_t       *set,
+ 		  const hb_set_t *other);
+ 
+-void
++HB_EXTERN void
+ hb_set_subtract (hb_set_t       *set,
+ 		 const hb_set_t *other);
+ 
+-void
++HB_EXTERN void
+ hb_set_symmetric_difference (hb_set_t       *set,
+ 			     const hb_set_t *other);
+ 
+-void
++HB_EXTERN void
+ hb_set_invert (hb_set_t *set);
+ 
+-unsigned int
++HB_EXTERN unsigned int
+ hb_set_get_population (const hb_set_t *set);
+ 
+ /* Returns -1 if set empty. */
+-hb_codepoint_t
++HB_EXTERN hb_codepoint_t
+ hb_set_get_min (const hb_set_t *set);
+ 
+ /* Returns -1 if set empty. */
+-hb_codepoint_t
++HB_EXTERN hb_codepoint_t
+ hb_set_get_max (const hb_set_t *set);
+ 
+ /* Pass -1 in to get started. */
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_set_next (const hb_set_t *set,
+ 	     hb_codepoint_t *codepoint);
+ 
+ /* Pass -1 for first and last to get started. */
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_set_next_range (const hb_set_t *set,
+ 		   hb_codepoint_t *first,
+ 		   hb_codepoint_t *last);
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_SET_H */
+diff --git a/gfx/harfbuzz/src/hb-shape-plan.h b/gfx/harfbuzz/src/hb-shape-plan.h
+--- a/gfx/harfbuzz/src/hb-shape-plan.h
++++ b/gfx/harfbuzz/src/hb-shape-plan.h
+@@ -33,57 +33,57 @@
+ 
+ #include "hb-common.h"
+ #include "hb-font.h"
+ 
+ HB_BEGIN_DECLS
+ 
+ typedef struct hb_shape_plan_t hb_shape_plan_t;
+ 
+-hb_shape_plan_t *
++HB_EXTERN hb_shape_plan_t *
+ hb_shape_plan_create (hb_face_t                     *face,
+ 		      const hb_segment_properties_t *props,
+ 		      const hb_feature_t            *user_features,
+ 		      unsigned int                   num_user_features,
+ 		      const char * const            *shaper_list);
+ 
+-hb_shape_plan_t *
++HB_EXTERN hb_shape_plan_t *
+ hb_shape_plan_create_cached (hb_face_t                     *face,
+ 			     const hb_segment_properties_t *props,
+ 			     const hb_feature_t            *user_features,
+ 			     unsigned int                   num_user_features,
+ 			     const char * const            *shaper_list);
+ 
+-hb_shape_plan_t *
++HB_EXTERN hb_shape_plan_t *
+ hb_shape_plan_get_empty (void);
+ 
+-hb_shape_plan_t *
++HB_EXTERN hb_shape_plan_t *
+ hb_shape_plan_reference (hb_shape_plan_t *shape_plan);
+ 
+-void
++HB_EXTERN void
+ hb_shape_plan_destroy (hb_shape_plan_t *shape_plan);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_shape_plan_set_user_data (hb_shape_plan_t    *shape_plan,
+ 			     hb_user_data_key_t *key,
+ 			     void *              data,
+ 			     hb_destroy_func_t   destroy,
+ 			     hb_bool_t           replace);
+ 
+-void *
++HB_EXTERN void *
+ hb_shape_plan_get_user_data (hb_shape_plan_t    *shape_plan,
+ 			     hb_user_data_key_t *key);
+ 
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_shape_plan_execute (hb_shape_plan_t    *shape_plan,
+ 		       hb_font_t          *font,
+ 		       hb_buffer_t        *buffer,
+ 		       const hb_feature_t *features,
+ 		       unsigned int        num_features);
+ 
+-const char *
++HB_EXTERN const char *
+ hb_shape_plan_get_shaper (hb_shape_plan_t *shape_plan);
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_SHAPE_PLAN_H */
+diff --git a/gfx/harfbuzz/src/hb-shape.cc b/gfx/harfbuzz/src/hb-shape.cc
+--- a/gfx/harfbuzz/src/hb-shape.cc
++++ b/gfx/harfbuzz/src/hb-shape.cc
+@@ -205,23 +205,25 @@ parse_one_feature (const char **pp, cons
+ 	 parse_feature_value_postfix (pp, end, feature) &&
+ 	 parse_space (pp, end) &&
+ 	 *pp == end;
+ }
+ 
+ /**
+  * hb_feature_from_string:
+  * @str: (array length=len) (element-type uint8_t): a string to parse
+- * @len: length of @str, or -1 if string is nul-terminated
++ * @len: length of @str, or -1 if string is %NULL terminated
+  * @feature: (out): the #hb_feature_t to initialize with the parsed values
+  *
+- * Parses a string into a #hb_feature_t. If @len is -1 then @str is
+- * %NULL-terminated.
++ * Parses a string into a #hb_feature_t.
+  *
+- * Return value: %TRUE if @str is successfully parsed, %FALSE otherwise
++ * TODO: document the syntax here.
++ *
++ * Return value:
++ * %true if @str is successfully parsed, %false otherwise.
+  *
+  * Since: 0.9.5
+  **/
+ hb_bool_t
+ hb_feature_from_string (const char *str, int len,
+ 			hb_feature_t *feature)
+ {
+   hb_feature_t feat;
+diff --git a/gfx/harfbuzz/src/hb-shape.h b/gfx/harfbuzz/src/hb-shape.h
+--- a/gfx/harfbuzz/src/hb-shape.h
++++ b/gfx/harfbuzz/src/hb-shape.h
+@@ -42,37 +42,37 @@ HB_BEGIN_DECLS
+ 
+ typedef struct hb_feature_t {
+   hb_tag_t      tag;
+   uint32_t      value;
+   unsigned int  start;
+   unsigned int  end;
+ } hb_feature_t;
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_feature_from_string (const char *str, int len,
+ 			hb_feature_t *feature);
+ 
+-void
++HB_EXTERN void
+ hb_feature_to_string (hb_feature_t *feature,
+ 		      char *buf, unsigned int size);
+ 
+ 
+-void
++HB_EXTERN void
+ hb_shape (hb_font_t           *font,
+ 	  hb_buffer_t         *buffer,
+ 	  const hb_feature_t  *features,
+ 	  unsigned int         num_features);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_shape_full (hb_font_t          *font,
+ 	       hb_buffer_t        *buffer,
+ 	       const hb_feature_t *features,
+ 	       unsigned int        num_features,
+ 	       const char * const *shaper_list);
+ 
+-const char **
++HB_EXTERN const char **
+ hb_shape_list_shapers (void);
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_SHAPE_H */
+diff --git a/gfx/harfbuzz/src/hb-shaper-list.hh b/gfx/harfbuzz/src/hb-shaper-list.hh
+--- a/gfx/harfbuzz/src/hb-shaper-list.hh
++++ b/gfx/harfbuzz/src/hb-shaper-list.hh
+@@ -41,15 +41,18 @@ HB_SHAPER_IMPLEMENT (coretext_aat)
+ 
+ #ifdef HAVE_OT
+ HB_SHAPER_IMPLEMENT (ot) /* <--- This is our main OpenType shaper. */
+ #endif
+ 
+ #ifdef HAVE_UNISCRIBE
+ HB_SHAPER_IMPLEMENT (uniscribe)
+ #endif
++#ifdef HAVE_DIRECTWRITE
++HB_SHAPER_IMPLEMENT (directwrite)
++#endif
+ #ifdef HAVE_CORETEXT
+ HB_SHAPER_IMPLEMENT (coretext)
+ #endif
+ 
+ #ifdef HAVE_FALLBACK
+ HB_SHAPER_IMPLEMENT (fallback) /* <--- This should be last. */
+ #endif
+diff --git a/gfx/harfbuzz/src/hb-unicode.h b/gfx/harfbuzz/src/hb-unicode.h
+--- a/gfx/harfbuzz/src/hb-unicode.h
++++ b/gfx/harfbuzz/src/hb-unicode.h
+@@ -169,52 +169,52 @@ typedef enum
+  */
+ 
+ typedef struct hb_unicode_funcs_t hb_unicode_funcs_t;
+ 
+ 
+ /*
+  * just give me the best implementation you've got there.
+  */
+-hb_unicode_funcs_t *
++HB_EXTERN hb_unicode_funcs_t *
+ hb_unicode_funcs_get_default (void);
+ 
+ 
+-hb_unicode_funcs_t *
++HB_EXTERN hb_unicode_funcs_t *
+ hb_unicode_funcs_create (hb_unicode_funcs_t *parent);
+ 
+-hb_unicode_funcs_t *
++HB_EXTERN hb_unicode_funcs_t *
+ hb_unicode_funcs_get_empty (void);
+ 
+-hb_unicode_funcs_t *
++HB_EXTERN hb_unicode_funcs_t *
+ hb_unicode_funcs_reference (hb_unicode_funcs_t *ufuncs);
+ 
+-void
++HB_EXTERN void
+ hb_unicode_funcs_destroy (hb_unicode_funcs_t *ufuncs);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_unicode_funcs_set_user_data (hb_unicode_funcs_t *ufuncs,
+ 			        hb_user_data_key_t *key,
+ 			        void *              data,
+ 			        hb_destroy_func_t   destroy,
+ 				hb_bool_t           replace);
+ 
+ 
+-void *
++HB_EXTERN void *
+ hb_unicode_funcs_get_user_data (hb_unicode_funcs_t *ufuncs,
+ 			        hb_user_data_key_t *key);
+ 
+ 
+-void
++HB_EXTERN void
+ hb_unicode_funcs_make_immutable (hb_unicode_funcs_t *ufuncs);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_unicode_funcs_is_immutable (hb_unicode_funcs_t *ufuncs);
+ 
+-hb_unicode_funcs_t *
++HB_EXTERN hb_unicode_funcs_t *
+ hb_unicode_funcs_get_parent (hb_unicode_funcs_t *ufuncs);
+ 
+ 
+ /*
+  * funcs
+  */
+ 
+ /* typedefs */
+@@ -280,191 +280,207 @@ typedef unsigned int			(*hb_unicode_deco
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_unicode_funcs_set_combining_class_func (hb_unicode_funcs_t *ufuncs,
+ 					   hb_unicode_combining_class_func_t func,
+ 					   void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_unicode_funcs_set_eastasian_width_func:
+  * @ufuncs: a Unicode function structure
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_unicode_funcs_set_eastasian_width_func (hb_unicode_funcs_t *ufuncs,
+ 					   hb_unicode_eastasian_width_func_t func,
+ 					   void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_unicode_funcs_set_general_category_func:
+  * @ufuncs: a Unicode function structure
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_unicode_funcs_set_general_category_func (hb_unicode_funcs_t *ufuncs,
+ 					    hb_unicode_general_category_func_t func,
+ 					    void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_unicode_funcs_set_mirroring_func:
+  * @ufuncs: a Unicode function structure
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_unicode_funcs_set_mirroring_func (hb_unicode_funcs_t *ufuncs,
+ 				     hb_unicode_mirroring_func_t func,
+ 				     void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_unicode_funcs_set_script_func:
+  * @ufuncs: a Unicode function structure
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_unicode_funcs_set_script_func (hb_unicode_funcs_t *ufuncs,
+ 				  hb_unicode_script_func_t func,
+ 				  void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_unicode_funcs_set_compose_func:
+  * @ufuncs: a Unicode function structure
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_unicode_funcs_set_compose_func (hb_unicode_funcs_t *ufuncs,
+ 				   hb_unicode_compose_func_t func,
+ 				   void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_unicode_funcs_set_decompose_func:
+  * @ufuncs: a Unicode function structure
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_unicode_funcs_set_decompose_func (hb_unicode_funcs_t *ufuncs,
+ 				     hb_unicode_decompose_func_t func,
+ 				     void *user_data, hb_destroy_func_t destroy);
+ 
+ /**
+  * hb_unicode_funcs_set_decompose_compatibility_func:
+  * @ufuncs: a Unicode function structure
+  * @func: (closure user_data) (destroy destroy) (scope notified):
+  * @user_data:
+  * @destroy:
+  *
+  * 
+  *
+  * Since: 0.9.2
+  **/
+-void
++HB_EXTERN void
+ hb_unicode_funcs_set_decompose_compatibility_func (hb_unicode_funcs_t *ufuncs,
+ 						   hb_unicode_decompose_compatibility_func_t func,
+ 						   void *user_data, hb_destroy_func_t destroy);
+ 
+ /* accessors */
+ 
+ /**
++ * hb_unicode_combining_class:
++ *
+  * Since: 0.9.2
+  **/
+-hb_unicode_combining_class_t
++HB_EXTERN hb_unicode_combining_class_t
+ hb_unicode_combining_class (hb_unicode_funcs_t *ufuncs,
+ 			    hb_codepoint_t unicode);
+ 
+ /**
++ * hb_unicode_eastasian_width:
++ *
+  * Since: 0.9.2
+  **/
+-unsigned int
++HB_EXTERN unsigned int
+ hb_unicode_eastasian_width (hb_unicode_funcs_t *ufuncs,
+ 			    hb_codepoint_t unicode);
+ 
+ /**
++ * hb_unicode_general_category:
++ *
+  * Since: 0.9.2
+  **/
+-hb_unicode_general_category_t
++HB_EXTERN hb_unicode_general_category_t
+ hb_unicode_general_category (hb_unicode_funcs_t *ufuncs,
+ 			     hb_codepoint_t unicode);
+ 
+ /**
++ * hb_unicode_mirroring:
++ *
+  * Since: 0.9.2
+  **/
+-hb_codepoint_t
++HB_EXTERN hb_codepoint_t
+ hb_unicode_mirroring (hb_unicode_funcs_t *ufuncs,
+ 		      hb_codepoint_t unicode);
+ 
+ /**
++ * hb_unicode_script:
++ *
+  * Since: 0.9.2
+  **/
+-hb_script_t
++HB_EXTERN hb_script_t
+ hb_unicode_script (hb_unicode_funcs_t *ufuncs,
+ 		   hb_codepoint_t unicode);
+ 
+ /**
++ * hb_unicode_compose:
++ *
+  * Since: 0.9.2
+  **/
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_unicode_compose (hb_unicode_funcs_t *ufuncs,
+ 		    hb_codepoint_t      a,
+ 		    hb_codepoint_t      b,
+ 		    hb_codepoint_t     *ab);
+ 
+ /**
++ * hb_unicode_decompose:
++ *
+  * Since: 0.9.2
+  **/
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_unicode_decompose (hb_unicode_funcs_t *ufuncs,
+ 		      hb_codepoint_t      ab,
+ 		      hb_codepoint_t     *a,
+ 		      hb_codepoint_t     *b);
+ 
+ /**
++ * hb_unicode_decompose_compatibility:
++ *
+  * Since: 0.9.2
+  **/
+-unsigned int
++HB_EXTERN unsigned int
+ hb_unicode_decompose_compatibility (hb_unicode_funcs_t *ufuncs,
+ 				    hb_codepoint_t      u,
+ 				    hb_codepoint_t     *decomposed);
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_UNICODE_H */
+diff --git a/gfx/harfbuzz/src/hb-uniscribe.cc b/gfx/harfbuzz/src/hb-uniscribe.cc
+--- a/gfx/harfbuzz/src/hb-uniscribe.cc
++++ b/gfx/harfbuzz/src/hb-uniscribe.cc
+@@ -914,17 +914,17 @@ retry:
+ 				     log_clusters + chars_offset,
+ 				     char_props + chars_offset,
+ 				     glyphs + glyphs_offset,
+ 				     glyph_props + glyphs_offset,
+ 				     (int *) &glyphs_len);
+ 
+     if (unlikely (items[i].a.fNoGlyphIndex))
+       FAIL ("ScriptShapeOpenType() set fNoGlyphIndex");
+-    if (unlikely (hr == E_OUTOFMEMORY))
++    if (unlikely (hr == E_OUTOFMEMORY || hr == E_NOT_SUFFICIENT_BUFFER))
+     {
+       if (unlikely (!buffer->ensure (buffer->allocated * 2)))
+ 	FAIL ("Buffer resize failed");
+       goto retry;
+     }
+     if (unlikely (hr == USP_E_SCRIPT_NOT_IN_FONT))
+     {
+       if (items[i].a.eScript == SCRIPT_UNDEFINED)
+@@ -1014,17 +1014,17 @@ retry:
+   buffer->clear_positions ();
+   double x_mult = font_data->x_mult, y_mult = font_data->y_mult;
+   for (unsigned int i = 0; i < glyphs_len; i++)
+   {
+     hb_glyph_info_t *info = &buffer->info[i];
+     hb_glyph_position_t *pos = &buffer->pos[i];
+ 
+     /* TODO vertical */
+-    pos->x_advance = x_mult * info->mask;
++    pos->x_advance = x_mult * (int32_t) info->mask;
+     pos->x_offset = x_mult * (backward ? -info->var1.i32 : info->var1.i32);
+     pos->y_offset = y_mult * info->var2.i32;
+   }
+ 
+   if (backward)
+     hb_buffer_reverse (buffer);
+ 
+   /* Wow, done! */
+diff --git a/gfx/harfbuzz/src/hb-uniscribe.h b/gfx/harfbuzz/src/hb-uniscribe.h
+--- a/gfx/harfbuzz/src/hb-uniscribe.h
++++ b/gfx/harfbuzz/src/hb-uniscribe.h
+@@ -29,18 +29,18 @@
+ 
+ #include "hb.h"
+ 
+ #include <windows.h>
+ 
+ HB_BEGIN_DECLS
+ 
+ 
+-LOGFONTW *
++HB_EXTERN LOGFONTW *
+ hb_uniscribe_font_get_logfontw (hb_font_t *font);
+ 
+-HFONT
++HB_EXTERN HFONT
+ hb_uniscribe_font_get_hfont (hb_font_t *font);
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_UNISCRIBE_H */
+diff --git a/gfx/harfbuzz/src/hb-version.h b/gfx/harfbuzz/src/hb-version.h
+--- a/gfx/harfbuzz/src/hb-version.h
++++ b/gfx/harfbuzz/src/hb-version.h
+@@ -33,34 +33,34 @@
+ 
+ #include "hb-common.h"
+ 
+ HB_BEGIN_DECLS
+ 
+ 
+ #define HB_VERSION_MAJOR 1
+ #define HB_VERSION_MINOR 1
+-#define HB_VERSION_MICRO 0
++#define HB_VERSION_MICRO 3
+ 
+-#define HB_VERSION_STRING "1.1.0"
++#define HB_VERSION_STRING "1.1.3"
+ 
+ #define HB_VERSION_ATLEAST(major,minor,micro) \
+ 	((major)*10000+(minor)*100+(micro) <= \
+ 	 HB_VERSION_MAJOR*10000+HB_VERSION_MINOR*100+HB_VERSION_MICRO)
+ 
+ 
+-void
++HB_EXTERN void
+ hb_version (unsigned int *major,
+ 	    unsigned int *minor,
+ 	    unsigned int *micro);
+ 
+-const char *
++HB_EXTERN const char *
+ hb_version_string (void);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_version_atleast (unsigned int major,
+ 		    unsigned int minor,
+ 		    unsigned int micro);
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_VERSION_H */
+diff --git a/gfx/harfbuzz/src/hb-version.h.in b/gfx/harfbuzz/src/hb-version.h.in
+--- a/gfx/harfbuzz/src/hb-version.h.in
++++ b/gfx/harfbuzz/src/hb-version.h.in
+@@ -42,25 +42,25 @@ HB_BEGIN_DECLS
+ 
+ #define HB_VERSION_STRING "@HB_VERSION@"
+ 
+ #define HB_VERSION_ATLEAST(major,minor,micro) \
+ 	((major)*10000+(minor)*100+(micro) <= \
+ 	 HB_VERSION_MAJOR*10000+HB_VERSION_MINOR*100+HB_VERSION_MICRO)
+ 
+ 
+-void
++HB_EXTERN void
+ hb_version (unsigned int *major,
+ 	    unsigned int *minor,
+ 	    unsigned int *micro);
+ 
+-const char *
++HB_EXTERN const char *
+ hb_version_string (void);
+ 
+-hb_bool_t
++HB_EXTERN hb_bool_t
+ hb_version_atleast (unsigned int major,
+ 		    unsigned int minor,
+ 		    unsigned int micro);
+ 
+ 
+ HB_END_DECLS
+ 
+ #endif /* HB_VERSION_H */
+diff --git a/gfx/harfbuzz/src/hb.h b/gfx/harfbuzz/src/hb.h
+--- a/gfx/harfbuzz/src/hb.h
++++ b/gfx/harfbuzz/src/hb.h
+@@ -23,16 +23,20 @@
+  *
+  * Red Hat Author(s): Behdad Esfahbod
+  */
+ 
+ #ifndef HB_H
+ #define HB_H
+ #define HB_H_IN
+ 
++#ifndef HB_EXTERN
++#define HB_EXTERN extern
++#endif
++
+ #include "hb-blob.h"
+ #include "hb-buffer.h"
+ #include "hb-common.h"
+ #include "hb-deprecated.h"
+ #include "hb-face.h"
+ #include "hb-font.h"
+ #include "hb-set.h"
+ #include "hb-shape.h"
+diff --git a/gfx/harfbuzz/src/sample.py b/gfx/harfbuzz/src/sample.py
+--- a/gfx/harfbuzz/src/sample.py
++++ b/gfx/harfbuzz/src/sample.py
+@@ -28,16 +28,22 @@ del blob
+ font = hb.font_create (face)
+ upem = hb.face_get_upem (face)
+ del face
+ hb.font_set_scale (font, upem, upem)
+ #hb.ft_font_set_funcs (font)
+ hb.ot_font_set_funcs (font)
+ 
+ buf = hb.buffer_create ()
++class Debugger(object):
++	def message (self, buf, font, msg, data, _x_what_is_this):
++		print(msg)
++		return True
++debugger = Debugger()
++hb.buffer_set_message_func (buf, debugger.message, 1, 0)
+ hb.buffer_add_utf8 (buf, text.encode('utf-8'), 0, -1)
+ hb.buffer_guess_segment_properties (buf)
+ 
+ hb.shape (font, buf, [])
+ del font
+ 
+ infos = hb.buffer_get_glyph_infos (buf)
+ positions = hb.buffer_get_glyph_positions (buf)
+diff --git a/gfx/harfbuzz/src/test.cc b/gfx/harfbuzz/src/test.cc
+--- a/gfx/harfbuzz/src/test.cc
++++ b/gfx/harfbuzz/src/test.cc
+@@ -115,17 +115,17 @@ main (int argc, char **argv)
+   {
+     hb_glyph_info_t *info = &infos[i];
+     hb_glyph_position_t *pos = &positions[i];
+ 
+     printf ("cluster %d	glyph 0x%x at	(%d,%d)+(%d,%d)\n",
+ 	    info->cluster,
+ 	    info->codepoint,
+ 	    pos->x_offset,
+-	    pos->x_offset,
++	    pos->y_offset,
+ 	    pos->x_advance,
+ 	    pos->y_advance);
+ 
+   }
+ 
+   hb_buffer_destroy (buffer);
+   hb_font_destroy (font);
+   hb_face_destroy (face);