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NEWS
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Overview of changes leading to 5.3.1
Wednesday, October 19, 2022
====================================
- Subsetter repacker fixes. (Garret Rieger)
- Adjust Grapheme clusters for Katakana voiced sound marks. (Behdad Esfahbod)
- New “hb-subset” option “--preprocess-face”. (Garret Rieger)
Overview of changes leading to 5.3.0
Saturday, October 8, 2022
"Women, Life, Freedom" #MahsaAmini
====================================
- Don’t add glyphs from dropped MATH or COLR tables to the subset glyphs.
(Khaled Hosny)
- Map “rlig” to appropriate AAT feature selectors. (Jonathan Kew)
- Update USE data files to latest version. (David Corbett)
- Check “CBDT” extents first before outline tables, to help with fonts that
also include an empty “glyf” table. (Khaled Hosny)
- More work towards variable font instancing in the subsetter. (Qunxin Liu)
- Subsetter repacker improvements. (Garret Rieger)
- New API:
+hb_ot_layout_lookup_get_optical_bound()
+hb_face_builder_sort_tables()
Overview of changes leading to 5.2.0
Saturday, September 17, 2022
====================================
- Fix regressions in hb-ft font functions for FT_Face’s with transformation
matrix. (Behdad Esfahbod)
- The experimental hb-repacker API now supports splitting several GPOS subtable
types when needed. (Garret Rieger)
- The HarfBuzz extensions to OpenType font format are now opt-in behind
build-time flags. (Behdad Esfahbod)
- The experimental hb-subset variable fonts instantiation API can now
instantiate more font tables and arbitrary axis locations. (Qunxin Liu)
- Unicode 15 support. (David Corbett)
- Various documentation improvements. (Behdad Esfahbod, Matthias Clasen)
- The hb-view command line tool now detects WezTerm inline images support.
(Wez Furlong)
- Fix FreeType and ICU dependency lookup with meson. (Xavier Claessens)
- New API:
+HB_SCRIPT_KAWI
+HB_SCRIPT_NAG_MUNDARI
Overview of changes leading to 5.1.0
Sunday, July 31, 2022
====================================
- More extensive buffer tracing messages. (Behdad Esfahbod)
- Fix hb-ft regression in bitmap fonts rendering. (Behdad Esfahbod)
- Support extension promotion of lookups in hb-subset-repacker. (Garret Rieger)
- A new HB_GLYPH_FLAG_SAFE_TO_INSERT_TATWEEL for scripts that use elongation
(e.g. Arabic) to signify where it is safe to insert tatweel glyph without
interrupting shaping. (Behdad Esfahbod)
- Add “--safe-to-insert-tatweel” to “hb-shape” tool. (Behdad Esfahbod)
- New API
+HB_GLYPH_FLAG_SAFE_TO_INSERT_TATWEEL
+HB_BUFFER_FLAG_PRODUCE_SAFE_TO_INSERT_TATWEEL
Overview of changes leading to 5.0.1
Saturday, July 23, 2022
====================================
- Fix version 2 “avar” table with hb-ft. (Behdad Esfahbod)
Overview of changes leading to 5.0.0
Saturday, July 23, 2022
====================================
- Support fonts with more than 65535 glyphs in “GDEF”, “GSUB”, and “GPOS”
tables. This is part of https://github.com/be-fonts/boring-expansion-spec to
extend OpenType in a backward-compatible way.
(Behdad Esfahbod, Garret Rieger)
- Complete support for more than 65535 glyphs in “glyf” table that started in
4.0.0 release. Part of boring-expansion-spec. (Behdad Esfahbod)
- Support version 2 of “avar” table. Part of boring-expansion-spec.
(Behdad Esfahbod)
- Fix mark attachment on multiple substitutions in some cases.
(Behdad Esfahbod)
- Fix application of “calt”, “rclt”, and “ccmp” features to better match
Uniscribe behaviour with some Arabic fonts. (Behdad Esfahbod)
- Improvement to interaction between multiple cursive attachments.
(Behdad Esfahbod)
- Improve multiple mark interactions in Hebrew. (Behdad Esfahbod)
- Implement language-specific forms in AAT shaping. (Behdad Esfahbod)
- Fix variation of “VORG” table. (Behdad Esfahbod)
- Support for specific script tags to be retained in the subsetter, and add
“--layout-scripts” option to “hb-subset” tool. (Garret Rieger)
- Accept space as delimiter for --features/--variations in command line tools.
- Improve subsetting of “COLR” table. (Qunxin Liu)
- Improved fuzzing coverage for ot-math API. (Frédéric Wang)
- Fix “kern” table version 2 (AAT) sanitization on 32-bit systems.
(Behdad Esfahbod)
- Allow negative glyph advances from “graphite2” shaper. (Stephan Bergmann)
- Implement loading (color) bitmap fonts with hb-ft. (Behdad Esfahbod)
- Fix regression in hb-ft when changing font size. (Behdad Esfahbod)
- Fix build on GCC < 7. (Kleis Auke Wolthuizen)
- Dynamically load dwrite.dll on windows if “directwrite” shaper is enabled.
(Luca Bacci)
- Provide a single-file harfbuzz-subset.cc file for easier alternate building
of hb-subset library, similar to harfbuzz.cc. (Khaled Hosny)
- New API
+HB_SUBSET_SETS_LAYOUT_SCRIPT_TAG
+hb_language_matches()
Overview of changes leading to 4.4.1
Wednesday, June 29, 2022
====================================
- Fix test failure with some compilers.
- Fix Telugu and Kannada kerning regression.
Overview of changes leading to 4.4.0
Monday, June 27, 2022
====================================
- Caching of variable fonts shaping, in particular when using HarfBuzz’s own
font loading functions (ot). Bringing performance of variable shaping in par
with non-variable fonts shaping. (Behdad Esfahbod)
- Caching of format 2 “Contextual Substitution” and “Chained Contexts
Substitution” lookups. Resulting in up to 20% speedup of lookup-heavy fonts
like Gulzar or Noto Nastaliq Urdu. (Behdad Esfahbod)
- Improved ANSI output from hb-view. (Behdad Esfahbod)
- Support for shaping legacy, pre-OpenType Windows 3.1-era, Arabic fonts that
relied on a fixed PUA encoding. (Khaled Hosny, Behdad Esfahbod)
- Sinhala script is now shaped by the USE shaper instead of “indic” one.
(Behdad Esfahbod, David Corbett)
- Thai shaper improvements. (David Corbett)
- hb-ot-name API supports approximate BCP-47 language matching, for example
asking for “en_US” in a font that has only “en” names will return them.
(Behdad Esfahbod)
- Optimized TrueType glyph shape loading. (Behdad Esfahbod)
- Fix subsetting of HarfBuzz faces created via hb_face_create_for_tables().
(Garret Rieger)
- Add 32 bit var store support to the subsetter. (Garret Rieger)
- New API
+HB_BUFFER_FLAG_DEFINED
+HB_BUFFER_SERIALIZE_FLAG_DEFINED
+hb_font_changed()
+hb_font_get_serial()
+hb_ft_hb_font_changed()
+hb_set_hash()
+hb_map_copy()
+hb_map_hash()
Overview of changes leading to 4.3.0
Friday, May 20, 2022
====================================
- Major speed up in loading and subsetting fonts, especially in
handling CFF table. Subsetting some fonts is now 3 times faster.
(Behdad Esfahbod, Garret Rieger)
- Speed up blending CFF2 table. (Behdad Esfahbod)
- Speed up hb_ot_tags_from_language(). (Behdad Esfahbod, David Corbett)
- Fix USE classification of U+10A38 to fix multiple marks on single Kharoshthi
base. (David Corbett)
- Fix parsing of empty CFF Index. (Behdad Esfahbod)
- Fix subsetting CPAL table with partial palette overlaps. (Garret Rieger)
- New API
+hb_map_is_equal() (Behdad Esfahbod)
Overview of changes leading to 4.2.1
Sunday, April 24, 2022
====================================
- Make sure hb_blob_create_from_file_or_fail() always returns nullptr in case
of failure and not empty blob sometimes. (Khaled Hosny)
- Add --passthrough-tables option to hb-subset. (Cosimo Lupo)
- Reinstate a pause after basic features in Khmer shaper, fixing a regression
introduced in previous release. (Behdad Esfahbod)
- Better handling of Regional_Indicator when shaped with RTL-native scripts,
reverting earlier fix that caused regressions in AAT shaping. (Behdad Esfahbod)
Overview of changes leading to 4.2.0
Wednesday, March 30, 2022
====================================
- Source code reorganization, splitting large hb-ot-layout files into smaller,
per-subtable ones under OT/Layout/*. Code for more tables will follow suit in
later releases. (Garret Rieger, Behdad Esfahbod)
- Revert Indic shaper change in previous release that broke some fonts and
instead make per-syllable restriction of “GSUB” application limited to
script-specific Indic features, while applying them and discretionary
features in one go. (Behdad Esfahbod)
- Fix decoding of private in gvar table. (Behdad Esfahbod)
- Fix handling of contextual lookups that delete too many glyphs. (Behdad Esfahbod)
- Make “morx” deleted glyphs don’t block “GPOS” application. (Behdad Esfahbod)
- Various build fixes. (Chun-wei Fan, Khaled Hosny)
- New API
+hb_set_next_many() (Andrew John)
Overview of changes leading to 4.1.0
Wednesday, March 23, 2022
====================================
- Various OSS-Fuzz fixes. (Behdad Esfahbod)
- Make fallback vertical-origin match FreeType’s. (Behdad Esfahbod)
- Treat visible viramas like dependent vowels in USE shaper. (David Corbett)
- Apply presentation forms features and discretionary features in one go in
Indic shaper, which seems to match Uniscribe and CoreText behaviour.
(Behdad Esfahbod, David Corbett)
- Various bug fixes.
- New API
+hb_set_add_sorted_array() (Andrew John)
Overview of changes leading to 4.0.1
Friday, March 11, 2022
====================================
- Update OpenType to AAT mappings for “hist” and “vrtr” features.
(Florian Pircher)
- Update IANA Language Subtag Registry to 2022-03-02. (David Corbett)
- Update USE shaper to allow any non-numeric tail in a symbol cluster, and
remove obsolete data overrides. (David Corbett)
- Fix handling of baseline variations to return correctly scaled values.
(Matthias Clasen)
- A new experimental hb_subset_repack_or_fail() to repack an array of objects,
eliminating offset overflows. The API is not available unless HarfBuzz is
built with experimental APIs enabled. (Qunxin Liu)
- New experimental API
+hb_link_t
+hb_object_t
+hb_subset_repack_or_fail()
Overview of changes leading to 4.0.0
Tuesday, March 1, 2022
====================================
- New public API to create subset plan and gather information on things like
glyph mappings in the final subset. The plan can then be passed on to perform
the subsetting operation. (Garret Rieger)
- Draw API for extracting glyph shapes have been extended and finalized and is
no longer an experimental API. The draw API supports glyf, CFF and CFF2
glyph outlines tables, and applies variation settings set on the font as well
as synthetic slant. The new public API is not backward compatible with the
previous, non-public, experimental API. (Behdad Esfahbod)
- The hb-view tool will use HarfBuzz draw API to render the glyphs instead of
cairo-ft when compiled with Cairo 1.17.5 or newer, setting HB_DRAW
environment variable to 1 or 0 will force using or not use the draw API,
respectively. (Behdad Esfahbod)
- The hb-shape and hb-view tools now default to using HarfBuzz’s own font
loading functions (ot) instead of FreeType ones (ft). They also have a new
option, --font-slant, to apply synthetic slant to the font. (Behdad Esfahbod)
- HarfBuzz now supports more than 65535 (the OpenType limit) glyph shapes and
metrics. See https://github.com/be-fonts/boring-expansion-spec/issues/6 and
https://github.com/be-fonts/boring-expansion-spec/issues/7 for details.
(Behdad Esfahbod)
- New API to get the dominant horizontal baseline tag for a given script.
(Behdad Esfahbod)
- New API to get the baseline positions from the font, and synthesize missing
ones. As well as new API to get font metrics and synthesize missing ones.
(Matthias Clasen)
- Improvements to finding dependencies on Windows when building with Visual
Studio. (Chun-wei Fan)
- New buffer flag, HB_BUFFER_FLAG_PRODUCE_UNSAFE_TO_CONCAT, that must be set
during shaping for HB_GLYPH_FLAG_UNSAFE_TO_CONCAT flag to be reliably
produced. This is to limit the performance hit of producing this flag to when
it is actually needed. (Behdad Esfahbod)
- Documentation improvements. (Matthias Clasen)
- New API
- General:
+HB_BUFFER_FLAG_PRODUCE_UNSAFE_TO_CONCAT
+hb_var_num_t
- Draw:
+hb_draw_funcs_t
+hb_draw_funcs_create()
+hb_draw_funcs_reference()
+hb_draw_funcs_destroy()
+hb_draw_funcs_is_immutable()
+hb_draw_funcs_make_immutable()
+hb_draw_move_to_func_t
+hb_draw_funcs_set_move_to_func()
+hb_draw_line_to_func_t
+hb_draw_funcs_set_line_to_func()
+hb_draw_quadratic_to_func_t
+hb_draw_funcs_set_quadratic_to_func()
+hb_draw_cubic_to_func_t
+hb_draw_funcs_set_cubic_to_func()
+hb_draw_close_path_func_t
+hb_draw_funcs_set_close_path_func()
+hb_draw_state_t
+HB_DRAW_STATE_DEFAULT
+hb_draw_move_to()
+hb_draw_line_to()
+hb_draw_quadratic_to()
+hb_draw_cubic_to()
+hb_draw_close_path()
+hb_font_get_glyph_shape_func_t
+hb_font_funcs_set_glyph_shape_func()
+hb_font_get_glyph_shape()
- OpenType layout
+HB_OT_LAYOUT_BASELINE_TAG_IDEO_FACE_CENTRAL
+HB_OT_LAYOUT_BASELINE_TAG_IDEO_EMBOX_CENTRAL
+hb_ot_layout_get_horizontal_baseline_tag_for_script()
+hb_ot_layout_get_baseline_with_fallback()
- Metrics:
+hb_ot_metrics_get_position_with_fallback()
- Subset:
+hb_subset_plan_t
+hb_subset_plan_create_or_fail()
+hb_subset_plan_reference()
+hb_subset_plan_destroy()
+hb_subset_plan_set_user_data()
+hb_subset_plan_get_user_data()
+hb_subset_plan_execute_or_fail()
+hb_subset_plan_unicode_to_old_glyph_mapping()
+hb_subset_plan_new_to_old_glyph_mapping()
+hb_subset_plan_old_to_new_glyph_mapping()
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 typedef’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.