Changelog for harfbuzz: 14.2.1 -> 14.3.0
Source: NEWS

Overview of changes leading to 14.3.0
Friday, July 31, 2026
=====================================
- Changes affecting shaping output:
  * Lookup order is now respected for mark positioning in the cross-direction
    (y in horizontal text, x in vertical text): marks no longer follow a
    cross-direction shift that a later lookup applies to the base. This
    improves compatibility with DirectWrite and Core Text.
  * Fix mark attachment to ligatures formed from decomposed glyphs.
  * The `calt` feature in Hangul text is now disabled only for the Jamos,
    not the whole buffer.

- Support for partially instancing version of `avar` table, as well as `CFF2`
  table.

- New fill-glyph paint operation and APIs for the common case of filling a
  glyph with a solid color.

- New API to fetch assorted raw values from the `OS/2`, `head`, and `post`
  tables.

- New experimental API to extract a font’s glyph dependency graph, that
  applications can use to compute glyph closures themselves without running the
  subsetter.

- New subset flag to convert the charset of a subsetted CID-keyed `CFF` fonts
  into identity charset, and a matching `hb-subset` option. Useful for
  embedding fonts in PDF.

- Command-line utilities now handle non-ASCII arguments correctly on Windows.

- Various instancing and subsetting fixes.

- Various fixes to the experimental `harfbuzz-vector`, `harfbuzz-raster` and
  `harfbuzz-gpu` libraries.

- Various improvements to the HarfRust integration shaper.

- Various build, CI, portability, and fuzzing fixes.

- New API:
  * OpenType:
    +HB_OT_BITS_TAG_FS_TYPE
    +HB_OT_BITS_TAG_FS_SELECTION
    +HB_OT_BITS_TAG_MAC_STYLE
    +HB_OT_BITS_TAG_IS_FIXED_PITCH
    +HB_OT_BITS_TAG_UNICODE_RANGE_1
    +HB_OT_BITS_TAG_UNICODE_RANGE_2
    +HB_OT_BITS_TAG_UNICODE_RANGE_3
    +HB_OT_BITS_TAG_UNICODE_RANGE_4
    +HB_OT_BITS_TAG_CODE_PAGE_RANGE_1
    +HB_OT_BITS_TAG_CODE_PAGE_RANGE_2
    +HB_OT_NUMBER_TAG_FONT_X_MIN
    +HB_OT_NUMBER_TAG_FONT_Y_MIN
    +HB_OT_NUMBER_TAG_FONT_X_MAX
    +HB_OT_NUMBER_TAG_FONT_Y_MAX
    +hb_ot_bits_tag_t
    +hb_ot_fetch_bits()
    +hb_ot_number_tag_t
    +hb_ot_fetch_number()

  * Paint:
    +hb_paint_fill_glyph_func_t
    +hb_paint_fill_glyph()
    +hb_paint_funcs_set_fill_glyph_func()

  * Subset library:
    +HB_SUBSET_FLAGS_CFF_IDENTITY_CHARSET