1762191 - Update HarfBuzz to 4.3.0

Status: RESOLVED FIXED

(Core :: Graphics: Text, task, P3)

Description

[Ryan VanderMeulen [:RyanVM]]

+++ This bug was initially created as a clone of Bug #1757738 +++

Very likely we'll skip this release while they continue upstream code reorganization. We addressed a couple regressions from the 4.1.0 release already in bug 1762183 so the urgency to update isn't high.

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)

Comment 1

[Ryan VanderMeulen [:RyanVM]]

Version 4.2.1 is out now, but still not feeling a strong need to update yet.

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)

Comment 2

[Ryan VanderMeulen [:RyanVM]]

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)

Comment 3

[Ryan VanderMeulen [:RyanVM]]

This is green on Try, but unless we're feeling a strong need to update before 102 leaves Nightly, I'm inclined to give it a week to bake upstream and update early in the next cycle.
https://treeherder.mozilla.org/jobs?repo=try&revision=827206b0399e8b947aba4e6fefef919f0991465a

Comment 4

[Ryan VanderMeulen [:RyanVM]]

Attachment: Bug 1762191 - Update HarfBuzz to 4.3.0.

Comment 5

[Jonathan Kew [:jfkthame]]

(In reply to Ryan VanderMeulen [:RyanVM] from comment #3)

This is green on Try, but unless we're feeling a strong need to update before 102 leaves Nightly, I'm inclined to give it a week to bake upstream and update early in the next cycle.
https://treeherder.mozilla.org/jobs?repo=try&revision=827206b0399e8b947aba4e6fefef919f0991465a

That sounds good to me; I don't think there's any urgency to land this.

Comment 6

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/743f51bc8ddf
Update HarfBuzz to 4.3.0. r=jfkthame

Comment 7

[Narcis Beleuzu [:NarcisB]]

https://hg.mozilla.org/mozilla-central/rev/743f51bc8ddf