Update harfbuzz-ng to 0.9.14 from 0.9.10

third_party/harfbuzz-ng/NEWS

+Overview of changes leading to 0.9.14
+Thursday, March 21, 2013
+=====================================
+
+- Build fixes.
+- Fix time-consuming sanitize with malicious fonts.
+- Implement hb_buffer_deserialize_glyphs() for both json and text.
+- Do not ignore Hangul filler characters.
+- Indic fixes:
+  * Fix Malayalam pre-base reordering interaction with post-forms.
+  * Further adjust ZWJ handling.  Should fix known regressions from
+    0.9.13.
+
+
+Overview of changes leading to 0.9.13
+Thursday, February 25, 2013
+=====================================
+
+- Build fixes.
+- Ngapi HarfBuzz Hackfest in London (February 2013):
+  * Fixed all known Indic bugs,
+  * New Win8-style Myanmar shaper,
+  * New South-East Asian shaper for Tai Tham, Cham, and New Tai Lue,
+  * Smartly ignore Default_Ignorable characters (joiners, etc) wheb
+    matching GSUB/GPOS lookups,
+  * Fix 'Phags-Pa U+A872 shaping,
+  * Fix partial disabling of default-on features,
+  * Allow disabling of TrueType kerning.
+- Fix possible crasher with broken fonts with overlapping tables.
+- Removed generated files from git again.  So, one needs ragel to
+  bootstrap from the git tree.
+
+API changes:
+- hb_shape() and related APIs now abort if buffer direction is
+  HB_DIRECTION_INVALID.  Previously, hb_shape() was calling
+  hb_buffer_guess_segment_properties() on the buffer before
+  shaping.  The heuristics in that function are fragile.  If the
+  user really wants the old behvaior, they can call that function
+  right before calling hb_shape() to get the old behavior.
+- hb_blob_create_sub_blob() always creates sub-blob with
+  HB_MEMORY_MODE_READONLY.  See comments for the reason.
+
+
+Overview of changes leading to 0.9.12
+Thursday, January 18, 2013
+=====================================
+
+- Build fixes for Sun compiler.
+- Minor bug fix.
+
+Overview of changes leading to 0.9.11
+Thursday, January 10, 2013
+=====================================
+
+- Build fixes.
+- Fix GPOS mark attachment with null Anchor offsets.
+- [Indic] Fix old-spec reordering of viramas if sequence ends in one.
+- Fix multi-threaded shaper data creation crash.
+- Add atomic ops for Solaris.
+
+API changes:
+- Rename hb_buffer_clear() to hb_buffer_clear_contents().
+
+
+Overview of changes leading to 0.9.10
+Thursday, January 3, 2013
+=====================================
+
+- [Indic] Fixed rendering of Malayalam dot-reph
+- Updated OT language tags.
+- Updated graphite2 backend.
+- Improved hb_ot_layout_get_size_params() logic.
+- Improve hb-shape/hb-view help output.
+- Fixed hb-set.h implementation to not crash.
+- Fixed various issues with hb_ot_layout_collect_lookups().
+- Various build fixes.
+
+New API:
+
+hb_graphite2_face_get_gr_face()
+hb_graphite2_font_get_gr_font()
+hb_coretext_face_get_cg_font()
+
+Modified API:
+
+hb_ot_layout_get_size_params()
+
+
+Overview of changes leading to 0.9.9
+Wednesday, December 5, 2012
+====================================
+
+- Fix build on Windows.
+- Minor improvements.
+
+
+Overview of changes leading to 0.9.8
+Tuesday, December 4, 2012
+====================================
+
+
+- Actually implement hb_shape_plan_get_shaper ().
+- Make UCDB data tables const.
+- Lots of internal refactoring in OTLayout tables.
+- Flesh out hb_ot_layout_lookup_collect_glyphs().
+
+New API:
+
+hb_ot_layout_collect_lookups()
+hb_ot_layout_get_size_params()
+
+
+Overview of changes leading to 0.9.7
+Sunday, November 21, 2012
+====================================
+
+
+HarfBuzz "All-You-Can-Eat-Sushi" (aka Vancouver) Hackfest and follow-on fixes.
+
+- Fix Arabic contextual joining using pre-context text.
+- Fix Sinhala "split matra" mess.
+- Fix Khmer shaping with broken fonts.
+- Implement Thai "PUA" shaping for old fonts.
+- Do NOT route Kharoshthi script through the Indic shaper.
+- Disable fallback positioning for Indic and Thai shapers.
+- Misc fixes.
+
+
+hb-shape / hb-view changes:
+
+- Add --text-before and --text-after
+- Add --bot / --eot / --preserve-default-ignorables
+- hb-shape --output-format=json
+
+
+New API:
+
+hb_buffer_clear()
+
+hb_buffer_flags_t
+
+HB_BUFFER_FLAGS_DEFAULT
+HB_BUFFER_FLAG_BOT
+HB_BUFFER_FLAG_EOT
+HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES
+
+hb_buffer_set_flags()
+hb_buffer_get_flags()
+
+HB_BUFFER_SERIALIZE_FLAGS
+hb_buffer_serialize_glyphs()
+hb_buffer_deserialize_glyphs()
+hb_buffer_serialize_list_formats()
+
+hb_set_add_range()
+hb_set_del_range()
+hb_set_get_population()
+hb_set_next_range()
+
+hb_face_[sg]et_glyph_count()
+
+hb_segment_properties_t
+HB_SEGMENT_PROPERTIES_DEFAULT
+hb_segment_properties_equal()
+hb_segment_properties_hash()
+
+hb_buffer_set_segment_properties()
+hb_buffer_get_segment_properties()
+
+hb_ot_layout_glyph_class_t
+hb_ot_layout_get_glyph_class()
+hb_ot_layout_get_glyphs_in_class()
+
+hb_shape_plan_t
+hb_shape_plan_create()
+hb_shape_plan_create_cached()
+hb_shape_plan_get_empty()
+hb_shape_plan_reference()
+hb_shape_plan_destroy()
+hb_shape_plan_set_user_data()
+hb_shape_plan_get_user_data()
+hb_shape_plan_execute()
+hb_shape_plan_get_shaper()
+
+hb_ot_shape_plan_collect_lookups()
+
+
+API changes:
+
+- Remove "mask" parameter from hb_buffer_add().
+- Rename hb_ot_layout_would_substitute_lookup() and hb_ot_layout_substitute_closure_lookup().
+- hb-set.h API const correction.
+- Renamed hb_set_min/max() to hb_set_get_min/max().
+- Rename hb_ot_layout_feature_get_lookup_indexes() to hb_ot_layout_feature_get_lookups().
+- Rename hb_buffer_guess_properties() to hb_buffer_guess_segment_properties().
+
+
+
+Overview of changes leading to 0.9.6
+Sunday, November 13, 2012
+====================================
+
+- Don't clear pre-context text if no new context is provided.
+- Fix ReverseChainingSubstLookup, which was totally borked.
+- Adjust output format of hb-shape a bit.
+- Include config.h.in in-tree.  Makes it easier for alternate build systems.
+- Fix hb_buffer_set_length(buffer, 0) invalid memory allocation.
+- Use ICU LayoutEngine's C API instead of C++.  Avoids much headache.
+- Drop glyphs for all of Unicode Default_Ignorable characters.
+- Misc build fixes.
+
+Arabic shaper:
+- Enable 'dlig' and 'mset' features in Arabic shaper.
+- Implement 'Phags-pa shaping, improve Mongolian.
+
+Indic shaper:
+- Decompose Sinhala split matras the way old HarfBuzz / Pango did.
+- Initial support for Consonant Medials.
+- Start adding new-style Myanmar shaping.
+- Make reph and 'pref' logic introspect the font.
+- Route Meetei-Mayek through the Indic shaper.
+- Don't apply 'liga' in Indic shaper.
+- Improve Malayalam pre-base reordering Ra interaction with Chillus.
+
+
+
+Overview of changes leading to 0.9.5
+Sunday, October 14, 2012
+====================================
+
+- Synthetic-GSUB Arabic fallback shaping.
+
+- Misc Indic improvements.
+
+- Add build system support for pthread.
+
+- Imported UCDN for in-tree Unicode callbacks implementation.
+
+- Context-aware Arabic joining.
+
+- Misc other fixes.
+
+- New API:
+
+  hb_feature_to/from-string()
+  hb_buffer_[sg]et_content_type()
+
+
+
+Overview of changes leading to 0.9.4
+Tuesday, Sep 03, 2012
+====================================
+
+- Indic improvements with old-spec Malayalam.
+
+- Better fallback glyph positioning, specially with Thai / Lao marks.
+
+- Implement dotted-circle insertion.
+
+- Better Arabic fallback shaping / ligation.
+
+- Added ICU LayoutEngine backend for testing.  Call it by the 'icu_le' name.
+
+- Misc fixes.
+
+
+
+Overview of changes leading to 0.9.3
+Friday, Aug 18, 2012
+====================================
+
+- Fixed fallback mark positioning for left-to-right text.
+
+- Improve mark positioning for the remaining combining classes.
+
+- Unbreak Thai and fallback Arabic shaping.
+
+- Port Arabic shaper to shape-plan caching.
+
+- Use new ICU normalizer functions.
+
+
+
+Overview of changes leading to 0.9.2
+Friday, Aug 10, 2012
+====================================
+
+- Over a thousand commits!  This is the first major release of HarfBuzz.
+
+- HarfBuzz is feature-complete now!  It should be in par, or better, than
+  both Pango's shapers and old HarfBuzz / Qt shapers.
+
+- New Indic shaper, supporting main Indic scripts, Sinhala, and Khmer.
+
+- Improved Arabic shaper, with fallback Arabic shaping, supporting Arabic,
+  Sinhala, N'ko, Mongolian, and Mandaic.
+
+- New Thai / Lao shaper.
+
+- Tibetan / Hangul support in the generic shaper.
+
+- Synthetic GDEF support for fonts without a GDEF table.
+
+- Fallback mark positioning for fonts without a GPOS table.
+
+- Unicode normalization shaping heuristic during glyph mapping.
+
+- New experimental Graphite2 backend.
+
+- New Uniscribe backend (primarily for testing).
+
+- New CoreText backend (primarily for testing).
+
+- Major optimization and speedup.
+
+- Test suites and testing infrastructure (work in progress).
+
+- Greatly improved hb-view cmdline tool.
+
+- hb-shape cmdline tool.
+
+- Unicode 6.1 support.
+
+Summary of API changes:
+
+o Changed API:
+
+  - Users are expected to only include main header files now (ie. hb.h,
+    hb-glib.h, hb-ft.h, ...)
+
+  - All struct tag names had their initial underscore removed.
+    Ie. "struct _hb_buffer_t" is "struct hb_buffer_t" now.
+
+  - All set_user_data() functions now take a "replace" boolean parameter.
+
+  - hb_buffer_create() takes zero arguments now.
+    Use hb_buffer_pre_allocate() to pre-allocate.
+
+  - hb_buffer_add_utf*() now accept -1 for length parameteres,
+    meaning "nul-terminated".
+
+  - hb_direction_t enum values changed.
+
+  - All *_from_string() APIs now take a length parameter to allow for
+    non-nul-terminated strings. A -1 length means "nul-terminated".
+
+  - Typedef for hb_language_t changed.
+
+  - hb_get_table_func_t renamed to hb_reference_table_func_t.
+
+  - hb_ot_layout_table_choose_script()
+
+  - Various renames in hb-unicode.h.
+
+o New API:
+
+  - hb_buffer_guess_properties()
+    Automatically called by hb_shape().
+
+  - hb_buffer_normalize_glyphs()
+
+  - hb_tag_from_string()
+
+  - hb-coretext.h
+
+  - hb-uniscribe.h
+
+  - hb_face_reference_blob()
+  - hb_face_[sg]et_index()
+  - hb_face_set_upem()
+
+  - hb_font_get_glyph_name_func_t
+    hb_font_get_glyph_from_name_func_t
+    hb_font_funcs_set_glyph_name_func()
+    hb_font_funcs_set_glyph_from_name_func()
+    hb_font_get_glyph_name()
+    hb_font_get_glyph_from_name()
+    hb_font_glyph_to_string()
+    hb_font_glyph_from_string()
+
+  - hb_font_set_funcs_data()
+
+  - hb_ft_font_set_funcs()
+  - hb_ft_font_get_face()
+
+  - hb-gobject.h (work in progress)
+
+  - hb_ot_shape_glyphs_closure()
+    hb_ot_layout_substitute_closure_lookup()
+
+  - hb-set.h
+
+  - hb_shape_full()
+
+  - hb_unicode_combining_class_t
+
+  - hb_unicode_compose_func_t
+    hb_unicode_decompose_func_t
+    hb_unicode_decompose_compatibility_func_t
+    hb_unicode_funcs_set_compose_func()
+    hb_unicode_funcs_set_decompose_func()
+    hb_unicode_funcs_set_decompose_compatibility_func()
+    hb_unicode_compose()
+    hb_unicode_decompose()
+    hb_unicode_decompose_compatibility()
+
+o Removed API:
+
+  - hb_ft_get_font_funcs()
+
+  - hb_ot_layout_substitute_start()
+    hb_ot_layout_substitute_lookup()
+    hb_ot_layout_substitute_finish()
+    hb_ot_layout_position_start()
+    hb_ot_layout_position_lookup()
+    hb_ot_layout_position_finish()
+
+
+
+Overview of changes leading to 0.6.0
+Friday, May 27, 2011
+====================================
+
+- Vertical text support in GPOS
+- Almost all API entries have unit tests now, under test/
+- All thread-safety issues are fixed
+
+Summary of API changes follows.
+
+
+* Simple Types API:
+
+  o New API:
+    HB_LANGUAGE_INVALID
+    hb_language_get_default()
+    hb_direction_to_string()
+    hb_direction_from_string()
+    hb_script_get_horizontal_direction()
+    HB_UNTAG()
+
+  o Renamed API:
+    hb_category_t renamed to hb_unicode_general_category_t
+
+  o Changed API:
+    hb_language_t is a typed pointers now
+
+  o Removed API:
+    HB_TAG_STR()
+
+
+* Use ISO 15924 tags for hb_script_t:
+
+  o New API:
+    hb_script_from_iso15924_tag()
+    hb_script_to_iso15924_tag()
+    hb_script_from_string()
+
+  o Changed API:
+    HB_SCRIPT_* enum members changed value.
+
+
+* Buffer API streamlined:
+
+  o New API:
+    hb_buffer_reset()
+    hb_buffer_set_length()
+    hb_buffer_allocation_successful()
+
+  o Renamed API:
+    hb_buffer_ensure() renamed to hb_buffer_pre_allocate()
+    hb_buffer_add_glyph() renamed to hb_buffer_add()
+
+  o Removed API:
+    hb_buffer_clear()
+    hb_buffer_clear_positions()
+
+  o Changed API:
+    hb_buffer_get_glyph_infos() takes an out length parameter now
+    hb_buffer_get_glyph_positions() takes an out length parameter now
+
+
+* Blob API streamlined:
+
+  o New API:
+    hb_blob_get_data()
+    hb_blob_get_data_writable()
+
+  o Renamed API:
+    hb_blob_create_empty() renamed to hb_blob_get_empty()
+
+  o Removed API:
+    hb_blob_lock()
+    hb_blob_unlock()
+    hb_blob_is_writable()
+    hb_blob_try_writable()
+
+  o Changed API:
+    hb_blob_create() takes user_data before destroy now
+
+
+* Unicode functions API:
+
+  o Unicode function vectors can subclass other unicode function vectors now.
+    Unimplemented callbacks in the subclass automatically chainup to the parent.
+
+  o All hb_unicode_funcs_t callbacks take a user_data now.  Their setters
+    take a user_data and its respective destroy callback.
+
+  o New API:
+    hb_unicode_funcs_get_empty()
+    hb_unicode_funcs_get_default()
+    hb_unicode_funcs_get_parent()
+
+  o Changed API:
+    hb_unicode_funcs_create() now takes a parent_funcs.
+
+  o Removed func getter functions:
+    hb_unicode_funcs_get_mirroring_func()
+    hb_unicode_funcs_get_general_category_func()
+    hb_unicode_funcs_get_script_func()
+    hb_unicode_funcs_get_combining_class_func()
+    hb_unicode_funcs_get_eastasian_width_func()
+
+
+* Face API:
+
+  o Renamed API:
+    hb_face_get_table() renamed to hb_face_reference_table()
+    hb_face_create_for_data() renamed to hb_face_create()
+
+  o Changed API:
+    hb_face_create_for_tables() takes user_data before destroy now
+    hb_face_reference_table() returns empty blob instead of NULL
+    hb_get_table_func_t accepts the face as first parameter now
+
+* Font API:
+
+  o Fonts can subclass other fonts now.  Unimplemented callbacks in the
+    subclass automatically chainup to the parent.  When chaining up,
+    scale is adjusted if the parent font has a different scale.
+
+  o All hb_font_funcs_t callbacks take a user_data now.  Their setters
+    take a user_data and its respective destroy callback.
+
+  o New API:
+    hb_font_get_parent()
+    hb_font_funcs_get_empty()
+    hb_font_create_sub_font()
+
+  o Removed API:
+    hb_font_funcs_copy()
+    hb_font_unset_funcs()
+
+  o Removed func getter functions:
+    hb_font_funcs_get_glyph_func()
+    hb_font_funcs_get_glyph_advance_func()
+    hb_font_funcs_get_glyph_extents_func()
+    hb_font_funcs_get_contour_point_func()
+    hb_font_funcs_get_kerning_func()
+
+  o Changed API:
+    hb_font_create() takes a face and references it now
+    hb_font_set_funcs() takes user_data before destroy now
+    hb_font_set_scale() accepts signed integers now
+    hb_font_get_contour_point_func_t now takes glyph first, then point_index
+    hb_font_get_glyph_func_t returns a success boolean now
+
+
+* Changed object model:
+
+  o All object types have a _get_empty() now:
+    hb_blob_get_empty()
+    hb_buffer_get_empty()
+    hb_face_get_empty()
+    hb_font_get_empty()
+    hb_font_funcs_get_empty()
+    hb_unicode_funcs_get_empty()
+
+  o Added _set_user_data() and _get_user_data() for all object types:
+    hb_blob_get_user_data()
+    hb_blob_set_user_data()
+    hb_buffer_get_user_data()
+    hb_buffer_set_user_data()
+    hb_face_get_user_data()
+    hb_face_set_user_data()
+    hb_font_funcs_get_user_data()
+    hb_font_funcs_set_user_data()
+    hb_font_get_user_data()
+    hb_font_set_user_data()
+    hb_unicode_funcs_get_user_data()
+    hb_unicode_funcs_set_user_data()
+
+  o Removed the _get_reference_count() from all object types:
+    hb_blob_get_reference_count()
+    hb_buffer_get_reference_count()
+    hb_face_get_reference_count()
+    hb_font_funcs_get_reference_count()
+    hb_font_get_reference_count()
+    hb_unicode_funcs_get_reference_count()
+
+  o Added _make_immutable() and _is_immutable() for all object types except for buffer:
+    hb_blob_make_immutable()
+    hb_blob_is_immutable()
+    hb_face_make_immutable()
+    hb_face_is_immutable()
+
+
+* Changed API for vertical text support
+
+  o The following callbacks where removed:
+    hb_font_get_glyph_advance_func_t
+    hb_font_get_kerning_func_t
+
+  o The following new callbacks added instead:
+    hb_font_get_glyph_h_advance_func_t
+    hb_font_get_glyph_v_advance_func_t
+    hb_font_get_glyph_h_origin_func_t
+    hb_font_get_glyph_v_origin_func_t
+    hb_font_get_glyph_h_kerning_func_t
+    hb_font_get_glyph_v_kerning_func_t
+
+  o The following API removed as such:
+    hb_font_funcs_set_glyph_advance_func()
+    hb_font_funcs_set_kerning_func()
+    hb_font_get_glyph_advance()
+    hb_font_get_kerning()
+
+  o New API added instead:
+    hb_font_funcs_set_glyph_h_advance_func()
+    hb_font_funcs_set_glyph_v_advance_func()
+    hb_font_funcs_set_glyph_h_origin_func()
+    hb_font_funcs_set_glyph_v_origin_func()
+    hb_font_funcs_set_glyph_h_kerning_func()
+    hb_font_funcs_set_glyph_v_kerning_func()
+    hb_font_get_glyph_h_advance()
+    hb_font_get_glyph_v_advance()
+    hb_font_get_glyph_h_origin()
+    hb_font_get_glyph_v_origin()
+    hb_font_get_glyph_h_kerning()
+    hb_font_get_glyph_v_kerning()
+
+  o The following higher-leve API added for convenience:
+    hb_font_get_glyph_advance_for_direction()
+    hb_font_get_glyph_origin_for_direction()
+    hb_font_add_glyph_origin_for_direction()
+    hb_font_subtract_glyph_origin_for_direction()
+    hb_font_get_glyph_kerning_for_direction()
+    hb_font_get_glyph_extents_for_origin()
+    hb_font_get_glyph_contour_point_for_origin()
+
+
+* OpenType Layout API:
+
+  o New API:
+    hb_ot_layout_position_start()
+    hb_ot_layout_substitute_start()
+    hb_ot_layout_substitute_finish()
+
+
+* Glue code:
+
+  o New API:
+    hb_glib_script_to_script()
+    hb_glib_script_from_script()
+    hb_icu_script_to_script()
+    hb_icu_script_from_script()
+
+
+* Version API added:
+
+  o New API:
+    HB_VERSION_MAJOR
+    HB_VERSION_MINOR
+    HB_VERSION_MICRO
+    HB_VERSION_STRING
+    HB_VERSION_CHECK()
+    hb_version()
+    hb_version_string()
+    hb_version_check()
+
+