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NEWS
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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: 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 Databse 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
====================================
- Fix hb-version.h file generation; last two releases went out with wrong ones.
- 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
====================================
- Update to Unicode 11.0.0.
Overview of changes leading to 1.7.7
Tuesday, June 5, 2018
====================================
- Lots of internal changes, but not yet exposed externally.
- All HarfBuzz objects are significantly smaller in size now.
- Sinhala: Position repha on top of post-consonant, not base.
This better matches Windows 10 behavior, which was changed
from previous Windows versions.
- New build options:
o New cpp macro HB_NO_ATEXIT
o New cpp macro HB_SUBSET_BUILTIN
- Significant libharfbuzz-subset changes. API subject to change.
- New API in libharfbuzz:
+hb_blob_create_from_file()
+hb_face_count()
A hashmap implementation:
+hb-map.h
+HB_MAP_VALUE_INVALID
+hb_map_t
+hb_map_create()
+hb_map_get_empty()
+hb_map_reference()
+hb_map_destroy()
+hb_map_set_user_data()
+hb_map_get_user_data()
+hb_map_allocation_successful()
+hb_map_clear()
+hb_map_is_empty()
+hb_map_get_population()
+hb_map_set()
+hb_map_get()
+hb_map_del()
+hb_map_has()
Overview of changes leading to 1.7.6
Wednesday, March 7, 2018
====================================
- Fix to hb_set_t binary operations. Ouch.
- New experimental harfbuzz-subset library. All of hb-subset.h
is experimental right now and API WILL change.
- New API:
hb_blob_copy_writable_or_fail()
HB_OT_TAG_BASE
hb_set_previous()
hb_set_previous_range()
Overview of changes leading to 1.7.5
Tuesday, January 30, 2018
====================================
- Separate Khmer shaper from Indic.
- First stab at AAT morx. Not hooked up.
- Misc bug fixes.
Overview of changes leading to 1.7.4
Wednesday, December 20, 2017
====================================
- Fix collect_glyphs() regression caused by hb_set_t changes.
Overview of changes leading to 1.7.3
Monday, December 18, 2017
====================================
- hb_set_t performance tuning and optimizations.
- Speed up collect_glyphs() and reject garbage data.
- In hb_coretext_font_create() set font point-size (ptem).
- Misc fixes.
Overview of changes leading to 1.7.2
Monday, December 4, 2017
====================================
- Optimize hb_set_add_range().
- Misc fixes.
- New API:
hb_coretext_font_create()
Overview of changes leading to 1.7.1
Tuesday, November 14, 2017
====================================
- Fix atexit object destruction regression.
- Fix minor integer-overflow.
Overview of changes leading to 1.7.0
Monday, November 13, 2017
====================================
- Minor Indic fixes.
- Implement kerning and glyph names in hb-ot-font.
- Various DSO optimization re .data and .bss sizes.
- Make C++11 optional; build fixes.
- Mark all other backends "unsafe-to-break".
- Graphite fix.
Overview of changes leading to 1.6.3
Thursday, October 26th, 2017
====================================
- Fix hb_set_t some more. Should be solid now.
- Implement get_glyph_name() for hb-ot-font.
- Misc fixes.
Overview of changes leading to 1.6.2
Monday, October 23nd, 2017
====================================
- Yesterday's release had a bad crasher; don't use it. That's what
happens when one works on Sunday...
https://github.com/harfbuzz/harfbuzz/issues/578
- Build fixes for FreeBSD and Chrome Android.
Overview of changes leading to 1.6.1
Sunday, October 22nd, 2017
====================================
- Don't skip over COMBINING GRAPHEME JOINER when ligating, etc.
To be refined: https://github.com/harfbuzz/harfbuzz/issues/554
- Faster hb_set_t implementation.
- Don't use deprecated ICU API.
- Fix undefined-behavior in Myanmar shaper, introduced in 1.6.0
- Deprecated API:
hb_set_invert()
Overview of changes leading to 1.6.0
Friday, October the 13th, 2017
====================================
- Update to Unicode 10.
- Various Indic and Universal Shaping Engine fixes as a result of
HarfBuzz Hackfest with Jonathan Kew at Web Engines Hackfest at
the Igalia offices in A Coruña, Spain. Thanks Igalia for having
us!
- Implement Unicode Arabic Mark Ordering Algorithm UTR#53.
- Implement optical sizing / tracking in CoreText backend, using
new API hb_font_set_ptem().
- Allow notifying hb_font_t that underlying FT_Face changed sizing,
using new API hb_ft_font_changed().
- More Graphite backend RTL fixes.
- Fix caching of variable font shaping plans.
- hb-view / hb-shape now accept following new arguments:
o --unicodes: takes a list of hex numbers that represent Unicode
codepoints.
New API:
+hb_face_get_table_tags()
+hb_font_set_ptem()
+hb_font_get_ptem()
+hb_ft_font_changed()
Overview of changes leading to 1.5.1
Tuesday, September 5, 2017
====================================
- Fix "unsafe-to-break" in fallback shaping and other corner cases.
All our tests pass with --verify now, meaning unsafe-to-break API
works as expected.
- Add --unicodes to hb-view / hb-shape.
- [indic] Treat Consonant_With_Stacker as consonant. This will need
further tweaking.
- hb_buffer_diff() tweaks.
Overview of changes leading to 1.5.0
Wednesday, August 23, 2017
====================================
- Misc new API, for appending a buffer to another, and for comparing
contents of two buffers for types of differences.
- New "unsafe-to-break" API. Can be used to speed up reshaping
in line-breaking situations. Essentially, after shaping, it returns
positions in the input string (some of the cluster boundaries) that
are "safe to break" in that if the text is segmented at that position
and two sides reshaped and concatenated, the shaping result is
exactly the same as shaping the text in one piece.
hb-view and hb-shape and hb-shape now take --verify, which verifies
the above property.
Some corner cases of the implementation are still not quite working.
Those will be fixed in subsequent releases.
- New API:
hb_buffer_append()
hb_glyph_flags_t
HB_GLYPH_FLAG_UNSAFE_TO_BREAK
HB_GLYPH_FLAG_DEFINED
hb_glyph_info_get_glyph_flags()
HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS
hb_buffer_diff_flags_t
HB_BUFFER_DIFF_FLAG_EQUAL
HB_BUFFER_DIFF_FLAG_CONTENT_TYPE_MISMATCH
HB_BUFFER_DIFF_FLAG_LENGTH_MISMATCH
HB_BUFFER_DIFF_FLAG_NOTDEF_PRESENT
HB_BUFFER_DIFF_FLAG_DOTTED_CIRCLE_PRESENT
HB_BUFFER_DIFF_FLAG_CODEPOINT_MISMATCH
HB_BUFFER_DIFF_FLAG_CLUSTER_MISMATCH
HB_BUFFER_DIFF_FLAG_GLYPH_FLAGS_MISMATCH
HB_BUFFER_DIFF_FLAG_POSITION_MISMATCH
hb_buffer_diff
Overview of changes leading to 1.4.8
Tuesday, August 8, 2017
====================================
- Major fix to avar table handling.
- Rename hb-shape --show-message to --trace.
- Build fixes.
Overview of changes leading to 1.4.7
Tuesday, July 18, 2017
====================================
- Multiple Indic, Tibetan, and Cham fixes.
- CoreText: Allow disabling kerning.
- Adjust Arabic feature order again.
- Misc build fixes.
Overview of changes leading to 1.4.6
Sunday, April 23, 2017
====================================
- Graphite2: Fix RTL positioning issue.
- Backlist GDEF of more versions of Padauk and Tahoma.
- New, experimental, cmake alternative build system.
Overview of changes leading to 1.4.5
Friday, March 10, 2017
====================================
- Revert "Fix Context lookup application when moving back after a glyph..."
This introduced memory access problems. To be fixed properly soon.
Overview of changes leading to 1.4.4
Sunday, March 5, 2017
====================================
- Fix Context lookup application when moving back after a glyph deletion.
- Fix buffer-overrun in Bengali.
Overview of changes leading to 1.4.3
Saturday, February 25, 2017
====================================
- Route Adlam script to Arabic shaper.
- Misc fixes.
- New API:
hb_font_set_face()
- Deprecate API:
hb_graphite2_font_get_gr_font()
Overview of changes leading to 1.4.2
Monday, January 23, 2017
====================================
- Implement OpenType Font Variation tables avar/fvar/HVAR/VVAR.
- hb-shape and hb-view now accept --variations.
- New API:
hb_variation_t
hb_variation_from_string()
hb_variation_to_string()
hb_font_set_variations()
hb_font_set_var_coords_design()
hb_font_get_var_coords_normalized()
hb-ot-var.h:
hb_ot_var_axis_t
hb_ot_var_has_data()
hb_ot_var_get_axis_count()
hb_ot_var_get_axes()
hb_ot_var_find_axis()
hb_ot_var_normalize_variations()
hb_ot_var_normalize_coords()
- MVAR to be implemented later. Access to named instances to be
implemented later as well.
- Misc fixes.
Overview of changes leading to 1.4.1
Thursday, January 5, 2017
====================================
- Always build and use UCDN for Unicode data by default.
Reduces dependence on version of Unicode data in glib,
specially in the Windows bundles we are shipping, which
have very old glib.
Overview of changes leading to 1.4.0
Thursday, January 5, 2017
====================================
- Merged "OpenType GX" branch which adds core of support for
OpenType 1.8 Font Variations. To that extent, the relevant
new API is:
New API:
hb_font_set_var_coords_normalized()
with supporting API:
New API:
HB_OT_LAYOUT_NO_VARIATIONS_INDEX
hb_ot_layout_table_find_feature_variations()
hb_ot_layout_feature_with_variations_get_lookups()
hb_shape_plan_create2()
hb_shape_plan_create_cached2()