+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
====================================
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 Databse implementation that is half the size of previously-used
+- New Unicode Character Database implementation that is half the size of previously-used
UCDN.
- Subsetter improvements.
- Improved documentation, thanks to Nathan Willis.
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