8.4.0

What's Changed

• Add /bigobj to MSVC compiler flags in meson build, to fix building hb-subset.cc
• Specify minimum versions of various dependencies in meson and autotools build.
• When subsetting, place variation store at the end of “GDEF” table to fix shaping issues with some versions of Adobe InDesign.
• Various build fixes.
• New API:
  +hb_buffer_set_random_state()
  +hb_buffer_get_random_state()

New Contributors

• @Demonese made their first contribution in #4632

Full Changelog: 8.3.1...8.4.0

8.3.1

What's Changed

• hb_blob_create_from_file_or_fail() on Windows will now try to interpret the file name as UTF-8 first, and as system code page if it is not valid UTF-8.
• Fix hb_style_get_value() in fonts with “STAT” table.
• Properly handle negative offsets in CFF table.
• Update IANA Language Subtag Registry to 2024-03-07.
• Subsetter now supports subsetting “BASE” table.
• Subsetter will update “hhea” font metrics in sync with “OS/2” ones.
• “--variations” option of “hb-subset” now supports leaving out values that should be unchanged, e.g. “wght=:500:” will change the default and keep max and min unchanged. It also supports “*=drop” to to pin all axes to default location.
• Fix hb_ot_math_get_glyph_kerning() to match updated “MATH” table spec.
• Support legacy MacRoman encoding in “cmap” table.
• Various build fixes.
• Various subsetting and instancing fixes.

New Contributors

• @pseiderer made their first contribution in #4512
• @utelle made their first contribution in #4514
• @lie-yan made their first contribution in #4541
• @sezero made their first contribution in #4546
• @apache-hb made their first contribution in #4561
• @TingPing made their first contribution in #4562
• @lzsiga made their first contribution in #4576
• @chrsan made their first contribution in #4579
• @Nopey made their first contribution in #4585
• @jpcomito made their first contribution in #4619

Full Changelog: 8.3.0...8.3.1

8.3.0

What's Changed

• Improve memory barrier to fix potential segfaults.

• Various build fixes.

• Various subsetting and instancing fixes.

• Rename “hb-subset” option “--instance” to “--variations” to match the other
  tools. Old option is kept as an alias.

• New API:
  HB_AAT_LAYOUT_FEATURE_TYPE_CURSIVE_CONNECTION

• Deprecated API:
  HB_AAT_LAYOUT_FEATURE_TYPE_CURISVE_CONNECTION

New Contributors

• @manthey made their first contribution in #4450
• @biodranik made their first contribution in #4448
• @yisibl made their first contribution in #4455
• @dalboris made their first contribution in #4492

Full Changelog: 8.2.2...8.3.0

8.2.2

What's Changed

• Fix regression from 8.1.0 in shaping fonts with duplicate feature tags.
• Fix regression from 8.2.0 in parsing CSS-style feature strings.
• Variable fonts instanciation now handles more tables.
• Various CMake build improvements.
• various fixes to build without errors with gcc 4.9.2.

New Contributors

• @tpetillon made their first contribution in #4408
• @Duncaen made their first contribution in #4413
• @inobelar made their first contribution in #4417

Full Changelog: 8.2.1...8.2.2

8.2.1

What's Changed

Unicode 15.1 support.

Full Changelog: 8.2.0...8.2.1

8.2.0

What's Changed

• Various build and fuzzing fixes

• Improvements to COLRv1 painting.

• New API:
  +hb_paint_color_glyph_func_t
  +hb_paint_funcs_set_color_glyph_func
  +hb_paint_color_glyph

New Contributors

• @benoit-pierre made their first contribution in #4391
• @amyspark made their first contribution in #4394

Full Changelog: 8.1.1...8.2.0

8.1.1

• Fix shaping of contextual rules at the end of string, introduced in 8.1.0
• Fix stack-overflow in repacker with malicious fonts.
• 30% speed up loading Noto Duployan font.

Full Changelog: 8.1.0...8.1.1

8.1.0

What's Changed

• Fix long-standing build issue with the AIX compiler and older Apple clang.

• Revert optimization that could cause timeout during subsetting with malicious fonts.

• More optimization work:

  • 45% speed up in shaping Noto Duployan font.
  • 10% speed up in subsetting Noto Duployan font.
  • Another 8% speed up in shaping Gulzar.
  • 5% speed up in loading Roboto.

• New API:
  +hb_ot_layout_collect_features_map()

New Contributors

• @derekdreery made their first contribution in #4334

Full Changelog: 8.0.1...8.1.0

8.0.1

What's Changed

• Build fix on 32-bit ARM.

• More speed optimizations:

  • 60% speed up in retain-gid (used for IFT) subsetting of SourceHanSans-VF.
  • 16% speed up in retain-gid (used for IFT) subsetting of NotoSansCJKkr.
  • 38% speed up in subsetting (beyond-64k) mega-merged Noto.

Full Changelog: 8.0.0...8.0.1

8.0.0

What's Changed

• New, experimental, WebAssembly (WASM) shaper, that provides greater flexibility over OpenType/AAT/Graphite shaping, using WebAssembly embedded inside the font file. Currently WASM shaper is disabled by default and needs
  to be enabled at build time. For details, see:

  https://github.com/harfbuzz/harfbuzz/blob/main/docs/wasm-shaper.md

  For example fonts making use of the WASM shaper, see:

  https://github.com/harfbuzz/harfbuzz-wasm-examples

• Improvements to Experimental features introduced in earlier releases:

  • Support for subsetting beyond-64k and VarComposites fonts.
  • Support for instancing variable fonts with cubic “glyf” table.

• Many big speed optimizations:

  • Up to 89% speedup loading variable fonts for shaping.
  • Up to 88% speedup in small subsets of large (eg. CJK) fonts (both TTF and OTF), essential for Incremental Font Transfer (IFT).
  • Over 50% speedup in loading Roboto font for shaping.
  • Up to 40% speed up in loading (sanitizing) complex fonts.
  • 30% speed up in shaping Gulzar font.
  • Over 25% speedup in glyph loading Roboto font.
  • 10% speed up loading glyph shapes in VarComposite Hangul font.
  • hb-hashmap optimizations & hashing improvements.

• New macro HB_ALWAYS_INLINE. HarfBuzz now inlines functions more aggressively, which results in some speedup at the expense of bigger code size. To disable this feature define the macro to just inline.

• New API:
  +HB_CODEPOINT_INVALID
  +hb_ot_layout_get_baseline2()
  +hb_ot_layout_get_baseline_with_fallback2()
  +hb_ot_layout_get_font_extents()
  +hb_ot_layout_get_font_extents2()
  +hb_subset_input_set_axis_range()

New Contributors

• @fanc999-1 made their first contribution in #4240
• @arch1t3cht made their first contribution in #4299
• @aelmahmoudy made their first contribution in #4301

Full Changelog: 7.3.0...8.0.0