+Overview of changes leading to 3.4.0
+Sunday, February 13, 2022
+====================================
+- Perform sanity checks on shaping results is now part of “harfbuzz” library
+ and can be enabled by setting the buffer flag HB_BUFFER_FLAG_VERIFY.
+ (Behdad Esfahbod)
+- Arabic Mark Transient Reordering Algorithm have been updated to revision 6.
+ (Khaled Hosny)
+- ISO 15924 code for mathematical notation, ‘Zmth’, now maps to the OpenType
+ ‘math’ tag. (Alexis King)
+- It is now possible to get at once all math kerning values for a given glyph
+ at a given corner. (Alexis King)
+- Fix locale_t portability issues on systems the typdef’s it to a void pointer.
+ (Behdad Esfahbod)
+
+- New API:
++HB_BUFFER_FLAG_VERIFY
++HB_OT_TAG_MATH_SCRIPT
++HB_SCRIPT_MATH
++hb_ot_math_kern_entry_t
++hb_ot_math_get_glyph_kernings
+
+- Deprecated API
++HB_OT_MATH_SCRIPT
+
+
+Overview of changes leading to 3.3.2
+Sunday, February 6, 2022
+====================================
+- Revert splitting of pair positioning values introduced in 3.3.0 as it proved
+ problematic. (Behdad Esfahbod)
+
+
+Overview of changes leading to 3.3.1
+Monday, January 31, 2022
+====================================
+- Fix heap-use-after-free in harfbuzz-subset introduced in previous release.
+ (Garret Rieger)
+
+
+Overview of changes leading to 3.3.0
+Monday, January 31, 2022
+====================================
+- Improved documentation. (Matthias Clasen)
+- Internal code cleanup, using C++ standard library more. (Behdad Esfahbod)
+- The low 16-bits of face index will be used by hb_face_create() to select a
+ face inside a font collection file format, while the high 16-bits will be
+ used by hb_font_create() to load the named instance. (Behdad Esfahbod)
+- Glyph positions and other font metrics now apply synthetic slant set by
+ hb_font_set_synthetic_slant(), for improved positioning for synthetically
+ slanted fonts. (Behdad Esfahbod)
+- Fixed unintentional locale dependency in hb_variation_to_string() for decimal
+ point representation. (Matthias Clasen)
+- When applying pair positioning (kerning) the positioning value is split
+ between the two sides of the pair for improved cursor positioning between
+ such pairs. (Behdad Esfahbod)
+- Introduced new HB_GLYPH_FLAG_UNSAFE_TO_CONCAT, to be used in conjunction
+ with HB_GLYPH_FLAG_UNSAFE_TO_BREAK for optimizing re-shaping during line
+ breaking. Check the documentation for further details. (Behdad Esfahbod)
+- Improved handling of macrolanguages when mapping BCP 47 codes to OpenType
+ tags. (David Corbett)
+
+- New API:
++HB_GLYPH_FLAG_UNSAFE_TO_CONCAT
++hb_segment_properties_overlay()
++hb_buffer_create_similar()
++hb_font_set_synthetic_slant()
++hb_font_get_synthetic_slant()
++hb_font_get_var_coords_design()
+
+
+Overview of changes leading to 3.2.0
+Friday, November 26, 2021
+====================================
+“harfbuzz” library improvements:
+- Fixed shaping of Apple Color Emoji flags in right-to-left context. (Behdad Esfahbod)
+- Fixed positioning of CFF fonts in HB_TINY profile. (Behdad Esfahbod)
+- OpenType 1.9 language tags update. (David Corbett)
+- Add HB_NO_VERTICAL config option.
+- Add HB_CONFIG_OVERRIDE_H for easier configuration. (Behdad Esfahbod)
+
+“harfbuzz-subset” library improvements:
+- Improved packing of cmap, loca, and Ligature tables. (Garret Rieger)
+- Significantly improved overflow-resolution strategy in the repacker. (Garret Rieger)
+
+
+Overview of changes leading to 3.1.2
+Friday, November 26, 2021
+====================================
+- hb-shape / hb-view: revert treating text on the commandline as single
+ paragraph (was introduced in 3.0.0); add new --single-par to do that.
+ (Behdad Esfahbod)
+- Subsetter bug fixes. (Garret Rieger, Qunxin Liu, Behdad Esfahbod)
+
+
+Overview of changes leading to 3.1.1
+Wednesday, November 8, 2021
+====================================
+- Work around GCC cast-align error/warning on some platforms. (Behdad Esfahbod)
+- Documentation improvements. (Matthias Clasen)
+
+
+Overview of changes leading to 3.1.0
+Wednesday, November 3, 2021
+====================================
+- Better offset-overflow handling in the subsetter library. (Garret Rieger)
+- Improved Unicode 14 properties in the USE shaper, and various other USE
+ shaper fixes. (David Corbett)
+- MATH and COLR v1 tables subsetting support, and various other subsetter fixes.
+ (Qunxin Liu)
+- Support for Pwo Karen / Ason Chin medial la. (Simon Cozens)
+- Apply GPOS positioning when substituting with morx table, if kerx is missing.
+ (Behdad Esfahbod)
+- Apply calt and clig features across syllable boundaries in Indic shaper.
+ (Behdad Esfahbod)
+- meson option for enabling Graphite 2 has been renamed to graphite2.
+- Build and documentation fixes.
+
+- New API:
++hb_buffer_set_not_found_glyph()
++hb_buffer_get_not_found_glyph()
+
+
+Overview of changes leading to 3.0.0
+Friday, September 17, 2021
+====================================
+- Unicode 14.0 support (David Corbett).
+- The hb-subset API and the harfbuzz-subset library's ABI are now declared
+ stable. The harfbuzz-subset library would not have been possible without the
+ work of Garret Rieger and Qunxin Liu from Google Fonts, and the earlier work
+ of Michiharu Ariza from Adobe.
+- The hb-style API is now stable and no longer experimental.
+
+- New API:
++hb_style_tag_t
++hb_style_get_value()
++hb_subset_input_t
++hb_subset_flags_t
++hb_subset_sets_t
++hb_subset_input_create_or_fail()
++hb_subset_input_reference()
++hb_subset_input_destroy()
++hb_subset_input_set_user_data()
++hb_subset_input_get_user_data()
++hb_subset_input_unicode_set()
++hb_subset_input_glyph_set()
++hb_subset_input_set()
++hb_subset_input_get_flags()
++hb_subset_input_set_flags()
++hb_subset_or_fail()
+
+- Removed old unstable harfbuzz-subset API:
+-hb_subset_input_nameid_set()
+-hb_subset_input_namelangid_set()
+-hb_subset_input_layout_features_set()
+-hb_subset_input_no_subset_tables_set()
+-hb_subset_input_drop_tables_set()
+-hb_subset_input_set_drop_hints()
+-hb_subset_input_get_drop_hints()
+-hb_subset_input_set_desubroutinize()
+-hb_subset_input_get_desubroutinize()
+-hb_subset_input_set_retain_gids()
+-hb_subset_input_get_retain_gids()
+-hb_subset_input_set_name_legacy()
+-hb_subset_input_get_name_legacy()
+-hb_subset_input_set_overlaps_flag()
+-hb_subset_input_get_overlaps_flag()
+-hb_subset_input_set_notdef_outline()
+-hb_subset_input_get_notdef_outline()
+-hb_subset_input_set_no_prune_unicode_ranges()
+-hb_subset_input_get_no_prune_unicode_ranges()
+-hb_subset()
+
+
+Overview of changes leading to 2.9.1
+Tuesday, September 7, 2021
+====================================
+- Final subset API is in place and if no issues are discovered, it will be the
+ stable subset API of HarfBuzz 3.0.0. Old API is kept to ease transition, but
+ will be removed in 3.0.0.
+- Various fuzzer-found bug fixes.
+- hb_buffer_append() now handles the pre- and post-context which previously
+ were left unchanged in the destination buffer.
+- hb-view / hb-shape now accept following new arguments:
+ o --unicodes-before/after: takes a list of hex numbers that represent Unicode
+ codepoints.
+- Undeprecated API:
+ hb_set_invert()
+
+
+Overview of changes leading to 2.9.0
+Wednesday, August 18, 2021
+History Repeats Itself (Afghanistan)
+====================================
+- Subsetter API is being stabilized, with the first stable API to happen in
+ 3.0.0 release (https://github.com/harfbuzz/harfbuzz/issues/3078).
+- Support multiple variation axes with same tag, aka HOI.
+- The “coretext” testing shaper now passes font variations to CoreText.
+- hb-shape/hb-view does not break line at new lines unless text is read from
+ file.
+- hb-view and hb-subset has a --batch now, similar to hb-shape.
+- The --batch mode now uses ; as argument separator instead of : used previously.
+- The --batch in hb-shape does not expect 0th argument anymore. That is, the
+ lines read are interpreted as argv[1:], instead of argv[0:].
+- The --batch option has been undocumented. We are ready to document it; send
+ feedback if you find it useful.
+- hb-subset got arguments revamps. Added much-requested --gids-file, --glyphs,
+ --glyphs-file, --unicodes-file, supporting ranges in --unicodes.
+- Various bug fixes.
+
+
+Overview of changes leading to 2.8.2
+Tuesday, July 8, 2021
+====================================
+- Shaping LTR digits for RTL scripts now makes the native direction of the
+ digits LTR, applying shaping and positioning rules on the same glyph order as
+ Uniscribe. (Jonathan Kew, Khaled Hosny).
+- Subsetting COLR v1 and CPAL tables is now supported. (Garret Rieger, Qunxin Liu)
+- Various fixes and improvements to the subsetter. (Garret Rieger, Qunxin Liu, Behdad)
+- When applying morx table, mark glyph widths should not be zeroed. (Jonathan Kew)
+- GPOS is preferred over kerx, if GSUB was applied. (Behdad)
+- Regional_Indicator pairs are grouped together when clustering. (Behdad)
+- New API:
++hb_blob_create_or_fail()
++hb_blob_create_from_file_or_fail()
++hb_set_copy()
+
+
+Overview of changes leading to 2.8.1
+Tuesday, May 4, 2021
+====================================
+- Subsetter now fully supports GSUB/GPOS/GDEF tables (including variations); as
+ such, layout tables are retained by subsetter by default. (Garret Rieger, Qunxin Liu)
+- Build scripts no longer check for FontConfig as HarfBuzz does not use it.
+- hb-view supports iTerm2 and kitty inline image protocols (Khaled Hosny),
+ it can also use Chafa for terminal graphics if available (Hans Petter Jansson).
+
+Overview of changes leading to 2.8.0
+Tuesday, March 16, 2021
+====================================
+- Shape joining scripts other than Arabic/Syriac using the Universal Shaping Engine.
+ Previously these were shaped using the generalized Arabic shaper. (David Corbett)
+- Fix regression in shaping of U+0B55 ORIYA SIGN OVERLINE. (David Corbett)
+- Update language tags. (David Corbett)
+- Variations: reduce error: do not round each interpolated delta. (Just van Rossum)
+- Documentation improvements. (Khaled Hosny, Nathan Willis)
+- Subsetter improvements: subsets most, if not all, lookup types now. (Garret Rieger, Qunxin Liu)
+- Fuzzer-found fixes and other improvements when memory failures happen. (Behdad)
+- Removed most atomic implementations now that we have C++11 atomic impl. (Behdad)
+- General codebase upkeep; using more C++11 features: constexpr constructors, etc. (Behdad)
+
+
+Overview of changes leading to 2.7.4
+Sunday, December 27, 2020
+====================================
+- Fix missing --enable-introspection configure option from previous release
+ tarball.
+- Documentation updates.
+
+
+Overview of changes leading to 2.7.3
+Wednesday, December 23, 2020
+====================================
+- Update USE shaper to 2020-08-13 specification, and other improvements.
+- Don’t disable liga feature in myanmar shaper, to match Uniscribe.
+- Improvements to language and script tags handling.
+- Update language system tag registry to OpenType 1.8.4
+- Support for serializing and deserializing Unicode buffers. Serialized buffers
+ are now delimited with `<>` or `[]` based on whether it is a Unicode or
+ glyphs buffer.
+- Increase buffer work limits to handle fonts with many complex lookups.
+- Handle more shaping operations in trace output.
+- Memory access fixes.
+- More OOM fixes.
+- Improved documentation.
+- Build system improvements.
+- New API:
++hb_buffer_has_positions()
++hb_buffer_serialize()
++hb_buffer_serialize_unicode()
++hb_buffer_deserialize_unicode()
+
+
+Overview of changes leading to 2.7.2
+Saturday, August 29, 2020
+====================================
+- Fix a regression in the previous release that caused a crash with Kaithi.
+- More OOM fixes.
+
+
+Overview of changes leading to 2.7.1
+Thursday, August 13, 2020
+====================================
+- ot-funcs now handles variable empty glyphs better when hvar/vvar isn't present.
+- Reverted a GDEF processing regression.
+- A couple of fixes to handle OOM better.
+
+
+Overview of changes leading to 2.7.0
+Saturday, July 25, 2020
+====================================
+- Use an implementation for round that always rounds up, some minor fluctuations
+ are expected on var font specially when hb-ot callback is used.
+- Fix an AAT's `kerx` issue on broken rendering of Devanagari Sangam MN.
+- Remove AAT's `lcar` table support from _get_ligature_carets API, not even much
+ use on macOS installed fonts (only two files). GDEF support is the recommended
+ one and expected to work properly after issues fixed two releases ago.
+- Minor memory fixes to handle OOM better specially in hb-ft.
+- Minor .so files versioning scheme change and remove stable/unstable scheme
+ differences, was never used in practice (always default to stable scheme).
+- We are now suggesting careful packaging of the library using meson,
+ https://github.com/harfbuzz/harfbuzz/wiki/Notes-on-migration-to-meson
+ for more information.
+- Distribution package URL is changed, either use GitHub generated tarballs,
+ `https://github.com/harfbuzz/harfbuzz/archive/$pkgver.tar.gz`
+ or, even more preferably use commit hash of the release and git checkouts like,
+ `git+https://github.com/harfbuzz/harfbuzz#commit=$commit`
+
+
+Overview of changes leading to 2.6.8
+Monday, June 22, 2020
+====================================
+- New API to fetch glyph alternates from GSUB table.
+- hb-coretext build fix for macOS < 10.10.
+- Meson build fixes, cmake port removal is postponed but please prepare for
+ it and give us feedback.
+ Autotools is still our main build system however please consider
+ experimenting with meson also for packaging the library.
+- New API:
++hb_ot_layout_lookup_get_glyph_alternates()
+
+
+Overview of changes leading to 2.6.7
+Wednesday, June 3, 2020
+====================================
+- Update to Unicode 13.0.0.
+- Fix hb_ot_layout_get_ligature_carets for fonts without lcar table, it was
+ completely broken for all the other fonts since 2.1.2.
+- As a part of our migration to meson, this release will be the last one
+ to provide cmake port files but autotools still is our main build system.
+ There is a possibility that the next version or the after be released
+ using meson.
+
+
+Overview of changes leading to 2.6.6
+Tuesday, May 12, 2020
+====================================
+- A fix in AAT kerning for Geeza Pro.
+- Better support for resource fork fonts on macOS.
+
+
+Overview of changes leading to 2.6.5
+Friday, April 17, 2020
+====================================
+- Add experimental meson build system. Autotools is still the primary
+ and supported build system.
+- AAT is now always preferred for horizontal scripts when both AAT and OT
+ layout tables exist at the same time.
+- Subsetter improvements.
+- New API:
++hb_ft_font_lock_face()
++hb_ft_font_unlock_face()
+
+
+Overview of changes leading to 2.6.4
+Monday, October 29, 2019
+====================================
+- Small bug fix.
+- Build fixes.
+
+
+Overview of changes leading to 2.6.3
+Monday, October 28, 2019
+====================================
+- Misc small fixes, mostly to build-related issues.
+- New API:
++hb_font_get_nominal_glyphs()
+
+
+Overview of changes leading to 2.6.2
+Monday, September 30, 2019
+====================================
+- Misc small fixes, mostly to build-related issues.
+
+
+Overview of changes leading to 2.6.1
+Thursday, August 22, 2019
+====================================
+- Fix regression with hb_font_create_sub_font scaling introduced in 2.6.0.
+- Change interpretation of font PTEM size / CoreText font size handling.
+ See https://github.com/harfbuzz/harfbuzz/pull/1484
+- hb-ot-font: Prefer symbol cmap subtable if present.
+- Apply 'dist'/'abvm'/'blwm' features to all scripts.
+- Drop experimental DirectWrite API.
+
+
+Overview of changes leading to 2.6.0
+Tuesday, August 13, 2019
+====================================
+- New OpenType metrics, baseline, and metadata table access APIs.
+- New API to set font variations to a named-instance.
+- New hb-gdi.h header and API for creating hb_face_t from HFONT.
+- Amalgam: Provide a single-file harfbuzz.cc file for easier alternate building.
+- More size-reduction configurable options, enabled by HB_TINY.
+- New API:
++hb_font_set_var_named_instance()
++hb_gdi_face_create()
++hb_ot_layout_baseline_tag_t
++hb_ot_layout_get_baseline()
++hb_ot_meta_tag_t
++hb_ot_meta_get_entry_tags()
++hb_ot_meta_reference_entry()
++hb_ot_metrics_tag_t
++hb_ot_metrics_get_position()
++hb_ot_metrics_get_variation()
++hb_ot_metrics_get_x_variation()
++hb_ot_metrics_get_y_variation()
+
+
+Overview of changes leading to 2.5.3
+Wednesday, June 26, 2019
+====================================
+- Fix UCD script data for Unicode 10+ scripts. This was broken since 2.5.0.
+- More optimizations for HB_TINY.
+
+
+Overview of changes leading to 2.5.2
+Thursday, June 20, 2019
+====================================
+- More hb-config.hh facilities to shrink library size, namely when built as
+ HB_TINY.
+- New documentation of custom configurations in CONFIG.md.
+- Fix build on gcc 4.8. That's supported again.
+- Universal Shaping Engine improvements thanks to David Corbett.
+- API Changes: Undeprecate some horizontal-kerning API and re-enable in hb-ft,
+ such that Type1 fonts will continue kerning.
+
+
+Overview of changes leading to 2.5.1
+Friday, May 31, 2019
+====================================
+- Fix build with various versions of Visual Studio.
+- Improved documentation, thanks to Nathan Willis.
+- Bugfix in subsetting glyf table.
+- Improved scripts for cross-compiling for Windows using mingw.
+- Rename HB_MATH_GLYPH_PART_FLAG_EXTENDER to HB_OT_MATH_GLYPH_PART_FLAG_EXTENDER.
+ A deprecated macro is added for backwards-compatibility.
+
+
+Overview of changes leading to 2.5.0
+Friday, May 24, 2019
+====================================
+- This release does not include much functional changes, but includes major internal
+ code-base changes. We now require C++11. Support for gcc 4.8 and earlier has been
+ dropped.
+- New hb-config.hh facility for compiling smaller library for embedded and web usecases.
+- New Unicode Character Database implementation that is half the size of previously-used
+ UCDN.
+- Subsetter improvements.
+- Improved documentation, thanks to Nathan Willis.
+- Misc shaping fixes.
+
+
+Overview of changes leading to 2.4.0
+Monday, March 25, 2019
+====================================
+- Unicode 12.
+- Misc fixes.
+- Subsetter improvements.
+- New API:
+HB_BUFFER_FLAG_DO_NOT_INSERT_DOTTED_CIRCLE
+hb_directwrite_face_create()
+
+
+Overview of changes leading to 2.3.1
+Wednesday, January 30, 2019
+====================================
+- AAT bug fixes.
+- Misc internal housekeeping cleanup.
+
+
+Overview of changes leading to 2.3.0
+Thursday, December 20, 2018
+====================================
+- Fix regression on big-endian architectures. Ouch!
+- Misc bug and build fixes.
+- Fix subsetting of simple GSUB/GDEF.
+- Merge CFF / CFF2 support contributed by Adobe. This mostly involves
+ the subsetter, but also get_glyph_extents on CFF fonts.
+
+New API in hb-aat.h:
++hb_aat_layout_has_substitution()
++hb_aat_layout_has_positioning()
++hb_aat_layout_has_tracking()
+
+
+Overview of changes leading to 2.2.0
+Thursday, November 29, 2018
+====================================
+- Misc shaping bug fixes.
+- Add font variations named-instance API.
+- Deprecate font variations axis enumeration API and add replacement.
+- AAT shaping improvements:
+ o Fixed 'kern' table Format 2 implementation.
+ o Implement 'feat' table API for feature detection.
+ o Blacklist 'GSUB' table of fonts from 'MUTF' foundry that also have 'morx'.
+
+New API:
++hb_aat_layout_feature_type_t
++hb_aat_layout_feature_selector_t
++hb_aat_layout_get_feature_types()
++hb_aat_layout_feature_type_get_name_id
++hb_aat_layout_feature_selector_info_t
++HB_AAT_LAYOUT_NO_SELECTOR_INDEX
++hb_aat_layout_feature_type_get_selector_infos()
++hb_ot_var_axis_flags_t
++hb_ot_var_axis_info_t
++hb_ot_var_get_axis_infos()
++hb_ot_var_find_axis_info()
++hb_ot_var_get_named_instance_count()
++hb_ot_var_named_instance_get_subfamily_name_id()
++hb_ot_var_named_instance_get_postscript_name_id()
++hb_ot_var_named_instance_get_design_coords()
+
+Deprecated API:
++HB_OT_VAR_NO_AXIS_INDEX
++hb_ot_var_axis_t
++hb_ot_var_get_axes()
++hb_ot_var_find_axis()
+
+
+Overview of changes leading to 2.1.3
+Friday, November 16, 2018
+====================================
+- Fix AAT 'mort' shaping, which was broken in 2.1.2
+
+
+Overview of changes leading to 2.1.2
+Friday, November 16, 2018
+====================================
+- Various internal changes.
+- AAT shaping improvements:
+ o Implement kern table Format 1 state-machine-based kerning.
+ o Implement cross-stream kerning (cursive positioning, etc).
+ o Ignore emptyish GSUB tables (zero scripts) if morx present.
+ o Don't apply GPOS if morx is being applied. Matches Apple.
+
+
+-Overview of changes leading to 2.1.1
+Monday, November 5, 2018
+====================================
+- AAT improvements:
+ o Implement 'mort' table.
+ o Implement 'kern' subtables Format 1 and Format 3.
+
+
+Overview of changes leading to 2.1.0
+Tuesday, October 30, 2018
+====================================
+- AAT shaping improvements:
+ o Allow user controlling AAT features, for whole buffer only currently.
+ o Several 'morx' fixes.
+ o Implement tuple-kerns in 'kerx'; Fixes kerning with Apple default
+ San Francisco fonts.
+- Support for color fonts:
+ o COLR/CPAL API to fetch color layers.
+ o SVG table to fetch SVG documents.
+ o CBDT/sbix API to fetch PNG images.
+- New 'name' table API.
+- hb-ot-font now uses 'VORG' table to correctly position CFF glyphs
+ in vertical layout.
+- Various fuzzer-found bug fixes.
+
+Changed API:
+
+A type and a macro added in 2.0.0 were renamed:
+
+hb_name_id_t -> hb_ot_name_id_t
+HB_NAME_ID_INVALID -> HB_OT_NAME_ID_INVALID
+
+New API:
+
++hb_color_t
++HB_COLOR
++hb_color_get_alpha()
++hb_color_get_red()
++hb_color_get_green()
++hb_color_get_blue()
++hb_ot_color_has_palettes()
++hb_ot_color_palette_get_count()
++hb_ot_color_palette_get_name_id()
++hb_ot_color_palette_color_get_name_id()
++hb_ot_color_palette_flags_t
++hb_ot_color_palette_get_flags()
++hb_ot_color_palette_get_colors()
++hb_ot_color_has_layers()
++hb_ot_color_layer_t
++hb_ot_color_glyph_get_layers()
++hb_ot_color_has_svg()
++hb_ot_color_glyph_reference_svg()
++hb_ot_color_has_png()
++hb_ot_color_glyph_reference_png()
+
++hb_ot_name_id_t
++HB_OT_NAME_ID_INVALID
++HB_OT_NAME_ID_COPYRIGHT
++HB_OT_NAME_ID_FONT_FAMILY
++HB_OT_NAME_ID_FONT_SUBFAMILY
++HB_OT_NAME_ID_UNIQUE_ID
++HB_OT_NAME_ID_FULL_NAME
++HB_OT_NAME_ID_VERSION_STRING
++HB_OT_NAME_ID_POSTSCRIPT_NAME
++HB_OT_NAME_ID_TRADEMARK
++HB_OT_NAME_ID_MANUFACTURER
++HB_OT_NAME_ID_DESIGNER
++HB_OT_NAME_ID_DESCRIPTION
++HB_OT_NAME_ID_VENDOR_URL
++HB_OT_NAME_ID_DESIGNER_URL
++HB_OT_NAME_ID_LICENSE
++HB_OT_NAME_ID_LICENSE_URL
++HB_OT_NAME_ID_TYPOGRAPHIC_FAMILY
++HB_OT_NAME_ID_TYPOGRAPHIC_SUBFAMILY
++HB_OT_NAME_ID_MAC_FULL_NAME
++HB_OT_NAME_ID_SAMPLE_TEXT
++HB_OT_NAME_ID_CID_FINDFONT_NAME
++HB_OT_NAME_ID_WWS_FAMILY
++HB_OT_NAME_ID_WWS_SUBFAMILY
++HB_OT_NAME_ID_LIGHT_BACKGROUND
++HB_OT_NAME_ID_DARK_BACKGROUND
++HB_OT_NAME_ID_VARIATIONS_PS_PREFIX
++hb_ot_name_entry_t
++hb_ot_name_list_names()
++hb_ot_name_get_utf8()
++hb_ot_name_get_utf16()
++hb_ot_name_get_utf32()
+
+
+Overview of changes leading to 2.0.2
+Saturday, October 20, 2018
+====================================
+- Fix two minor memory access issues in AAT tables.
+
+
+Overview of changes leading to 2.0.1
+Friday, October 19, 2018
+====================================
+- Fix hb-version.h reported release version that went wrong (1.8.0)
+ with previous release.
+- Fix extrapolation in 'trak' table.
+- Fix hb-font infinite-recursion issue with some font funcs and
+ subclassed fonts.
+- Implement variation-kerning format in kerx table, although without
+ variation.
+- Fix return value of hb_map_is_empty().
+
+
+Overview of changes leading to 2.0.0
+Thursday, October 18, 2018
+====================================
+- Added AAT shaping support (morx/kerx/trak).
+ Automatically used if GSUB/GPOS are not available respectively.
+ Set HB_OPTIONS=aat env var to have morx/kerx preferred over
+ GSUB/GPOS.
+- Apply TrueType kern table internally, instead of relying on
+ hb_font_t callbacks.
+- Khmer shaper significantly rewritten to better match Uniscribe.
+- Indic3 tags ('dev3', etc) are passed to USE shaper.
+- .dfont Mac font containers implemented.
+- Script- and language-mapping revamped to better use BCP 47.
+- Misc USE and Indic fixes.
+- Misc everything fixes.
+- Too many things to list. Biggest release since 0.9.1, with
+ over 500 commits in just over 5 weeks! Didn't intend it to
+ be a big release. Just happened to become.
+- hb-ft now locks underlying FT_Face during use.
+
+API changes:
+
+- Newly-created hb_font_t's now have our internal "hb-ot-font"
+ callbacks set on them, so they should work out of the box
+ without any callbacks set. If callbacks are set, everything
+ is back to what it was before, the fallback callbacks are
+ null. If you to get the internal implementation modified,
+ sub_font it.
+
+- New hb_font_funcs_set_nominal_glyphs_func() allows speeding
+ up character to glyph mapping.
+
+New API:
++HB_FEATURE_GLOBAL_START
++HB_FEATURE_GLOBAL_END
++hb_buffer_set_invisible_glyph()
++hb_buffer_get_invisible_glyph()
++hb_font_funcs_set_nominal_glyphs_func()
++hb_ot_layout_table_select_script()
++hb_ot_layout_script_select_language()
++hb_ot_layout_feature_get_name_ids()
++hb_ot_layout_feature_get_characters()
++hb_name_id_t
++HB_NAME_ID_INVALID
++HB_OT_MAX_TAGS_PER_SCRIPT
++hb_ot_tags_from_script_and_language()
++hb_ot_tags_to_script_and_language()
+
+Deprecated API:
+-hb_font_funcs_set_glyph_func()
+-hb_unicode_eastasian_width_func_t
+-hb_unicode_funcs_set_eastasian_width_func()
+-hb_unicode_eastasian_width()
+-hb_unicode_decompose_compatibility_func_t
+-HB_UNICODE_MAX_DECOMPOSITION_LEN
+-hb_unicode_funcs_set_decompose_compatibility_func()
+-hb_unicode_decompose_compatibility()
+-hb_font_funcs_set_glyph_h_kerning_func()
+-hb_font_funcs_set_glyph_v_kerning_func()
+-hb_font_get_glyph_h_kerning()
+-hb_font_get_glyph_v_kerning()
+-hb_font_get_glyph_kerning_for_direction()
+-hb_ot_layout_table_choose_script()
+-hb_ot_layout_script_find_language()
+-hb_ot_tags_from_script()
+-hb_ot_tag_from_language()
+
+
+Overview of changes leading to 1.9.0
+Monday, September 10, 2018
+====================================
+- Added 'cmap' API to hb_face_t.
+- Face-builder API.
+- hb-ot-font re-creation should be much leaner now, as the
+ font tables it uses are cached on hb_face_t now.
+- Internal source header file name changes:
+ hb-*-private.hh is renamed to hb-*.hh.
+
+New API:
++HB_UNICODE_MAX
++hb_face_collect_unicodes()
++hb_face_collect_variation_selectors()
++hb_face_collect_variation_unicodes()
++hb_face_builder_create()
++hb_face_builder_add_table()
+
+
+Overview of changes leading to 1.8.8
+Tuesday, August 14, 2018
+====================================
+- Fix hb-icu crash on architectures where compare_exchange_weak() can
+ fail falsely. This bug was introduced in 1.8.4.
+ https://bugs.chromium.org/p/chromium/issues/detail?id=873568
+- More internal refactoring of atomic operations and singletons.
+- API changes:
+ The following functions do NOT reference their return value before
+ returning:
+ * hb_unicode_funcs_get_default()
+ * hb_glib_get_unicode_funcs()
+ * hb_icu_get_unicode_funcs()
+ This is consistent with their naming ("get", instead of "reference")
+ as well as how they are used in the wild (ie. no one calls destroy()
+ on their return value.)
+
+
+Overview of changes leading to 1.8.7
+Wednesday, August 8, 2018
+====================================
+- Fix assertion failure with GDEF-blacklisted fonts.
+
+
+Overview of changes leading to 1.8.6
+Tuesday, August 7, 2018
+====================================
+- Internal code shuffling.
+- New API to speed up getting advance widths for implementations
+ that have heavy overhead in get_h_advance callback:
++hb_font_funcs_set_glyph_h_advances_func
++hb_font_funcs_set_glyph_v_advances_func
++hb_font_get_glyph_advances_for_direction
++hb_font_get_glyph_h_advances
++hb_font_get_glyph_h_advances_func_t
++hb_font_get_glyph_v_advances
++hb_font_get_glyph_v_advances_func_t
+
+
+Overview of changes leading to 1.8.5
+Wednesday, August 1, 2018
+====================================
+- Major Khmer shaper improvements to better match Microsoft.
+- Indic bug fixes.
+- Internal improvements to atomic operations.
+
+
+Overview of changes leading to 1.8.4
+Tuesday, July 17, 2018
+====================================
+- Fix build on non-C++11.
+- Use C++-style GCC atomics and C++11 atomics.
+
+
+Overview of changes leading to 1.8.3
+Wednesday, July 11, 2018
+====================================
+- A couple of Indic / USE bug fixes.
+- Disable vectorization, as it was causing unaligned access bus error on
+ certain 32bit architectures.
+
+
+Overview of changes leading to 1.8.2
+Tuesday, July 3, 2018
+====================================
+- Fix infinite loop in Khmer shaper.
+- Improve hb_blob_create_from_file() for streams.
+
+
Overview of changes leading to 1.8.1
Tuesday, June 12, 2018
====================================
- Add correctness bug in hb_set_t operations, introduced in 1.7.7.
- Remove HB_SUBSET_BUILTIN build option. Not necessary.
+
Overview of changes leading to 1.8.0
Tuesday, June 5, 2018
====================================
due to bug in glyph class of ASCII double-quote character. This should
address "regression" introduced in 1.2.0 when we switched mark zeroing
in most shapers from BY_UNICODE_LATE to BY_GDEF_LATE.
- This fourth release in a week should finally stablize things...
+ This fourth release in a week should finally stabilize things...
- hb-ot-font's get_glyph() implementation saw some optimizations. Though,
might be really hard to measure in real-world situations.
- 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,
+ - hb_buffer_add_utf*() now accept -1 for length parameters,
meaning "nul-terminated".
- hb_direction_t enum values changed.
projects / platform / upstream / harfbuzz.git / blobdiff