1656886 - Update HarfBuzz to 2.7.4

Status: RESOLVED FIXED

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

Description

[Ryan VanderMeulen [:RyanVM]]

+++ This bug was initially created as a clone of Bug #1647303 +++

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

Comment 1

[Jonathan Kew [:jfkthame]]

Yeah, should be fine to do this, assuming try is happy with it (although we already cherry-picked the important fix here in bug 1650414).

Comment 2

[Ryan VanderMeulen [:RyanVM]]

Attachment: Bug 1656886 - Update HarfBuzz to 2.7.4. r=jfkthame

Comment 3

[Ryan VanderMeulen [:RyanVM]]

Try push:
https://treeherder.mozilla.org/#/jobs?repo=try&group_state=expanded&revision=35832b468ad8a1a032b2472789fd87383f1cae79

Comment 4

[Ryan VanderMeulen [:RyanVM]]

Overview of changes leading to 2.7.1
Thursday, Aug 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.

Comment 5

[Ryan VanderMeulen [:RyanVM]]

Try push:
https://treeherder.mozilla.org/#/jobs?repo=try&revision=0dde9f3920e15b21d5d07fcac7a0c9330bab963f

Comment 6

[Jonathan Kew [:jfkthame]]

I think we should hold off until after the upcoming version bump here. Things have been a little unstable in the HB world lately (2.7.0 included a regression that then had to be reverted, prompting the 2.7.1 release), and I don't think there's anything here that we urgently need. The one significant fix was "Fix an AAT's kerx issue on broken rendering of Devanagari Sangam MN", but we already cherry-picked that.

Comment 7

[Jonathan Kew [:jfkthame]]

Given https://github.com/harfbuzz/harfbuzz/issues/2659 which has just been filed, and affects 2.7.1, I think we should just sit tight here for now.

Comment 8

[Ryan VanderMeulen [:RyanVM]]

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.

Comment 9

[Ryan VanderMeulen [:RyanVM]]

Try push:
https://treeherder.mozilla.org/#/jobs?repo=try&revision=3369a6b2e488abc58ee0c4da01f730e53c514dae

Comment 10

[Ryan VanderMeulen [:RyanVM]]

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()

Comment 11

[Ryan VanderMeulen [:RyanVM]]

Try push:
https://treeherder.mozilla.org/#/jobs?repo=try&revision=c2ee2e3bd9781cedca004d1f3bd93ac57298cf65

Comment 12

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/66f990850b89
Update HarfBuzz to 2.7.4. r=jfkthame

Comment 13

[Andreea Pavel [:apavel]]

https://hg.mozilla.org/mozilla-central/rev/66f990850b89