[ot-metrics] Touch up

Implement a simple API for fetching opentype metrics

Fixes https://github.com/harfbuzz/harfbuzz/pull/1432

Revert "[Myanmar] Prevent reordering between Asat and Dot below"

This reverts commit 1c8654ead41ca746d577549c92d2a41c594ab639.

[ci] Bring back -linux-arm64 bot

Let's see if 576065b has fixed it

Revert "Revert previous change"

This reverts commit b8e90ca1a10fbd472eda1aa8cc3797011da52356.

Works now.

[iter] Fix reduce type deduction

[ci] Disable -linux-arm64 bot

This is its failure https://circleci.com/gh/harfbuzz/harfbuzz/99864

Trying to fix like ee05627, interestingly, makes the bot and the
others to fail like this https://circleci.com/gh/harfbuzz/harfbuzz/99841

Revert previous change

Interestingly all of the bots disagreed with the change and the complain is... weird.

Improve syntax to make out linux-arm64 a little happy

Decided to apply is we did the same on other places however this won't
fix all of its complains

Downgrade -Wdeprecated-declarations to warning

Fixes #1834 at least till fix of #1829

[amalgam] Fix redundant-declaration warning/error

Fix C++20 compile warning on implicit capture of this with '=' default capture (#1833)

Happens when compiled with -std=c++2a, the fix just makes the captures explicit to resolve the issue. Just adding this in addition to = doesn't work in C++11.

src/hb-ot-layout-gpos-table.hh:737:18: warning: implicit capture of 'this' with a capture default of '=' is deprecated [-Wdeprecated-this-capture]
              { return (this+_).intersects (glyphs, valueFormat); })
                        ^
src/hb-ot-layout-gpos-table.hh:736:16: note: add an explicit capture of 'this' to capture '*this' by reference
    | hb_map ([=] (const OffsetTo<PairSet> &_)
               ^
                , this

[usp] define atfree callback only if used

[subset] For option "--unicodes",  add support for "*" to retain all code points

Revert "Update Graphite API to latest (#1215)"

This reverts commit e4e74c2751ac24178086cce2811d34d8019b6f85.

See https://github.com/harfbuzz/harfbuzz/issues/1829

[fuzz] Increase subset runner timeout for tsan bot

Now is flaky let's just increase and maybe investigate later

[fuzz] Don't fail when blob is empty

And enable more tests able to trig the issue.

Fix unintialized memory read in cmap subset (#1826)

Don't call memcpy when a table is empty

Force blob generation and memory check in hb-subset-fuzzer

Revert "Minor" - revert moving extern "C" definitions in-function

This reverts commit 62e60322cb9e18b3ee75f1b4a2a6d3069f587407 since it
breaks building HarfBuzz as part of Chromium.

Fixes https://github.com/harfbuzz/harfbuzz/issues/1821.

[font] Remove division when scaling

Yoohoo.  This seems to be precise enough!  Let's see if it sticks.
I'm asking Dominik to run this in Chrome test suite and report.

Fixes https://github.com/harfbuzz/harfbuzz/issues/1801

[font] Keep font-space to user-space multiplier

Part of https://github.com/harfbuzz/harfbuzz/issues/1801

Make face immutable in hb_font_set_face()

[ot-font] Optimize rounding

Part of https://github.com/harfbuzz/harfbuzz/issues/1801

The assumption that compiler optimizes "upem/2" to a shift only
works if upem is unsigned...  Anyway, spoon-feed the compiler.

Clusters are reversed based on the direction, not script

Fixes https://github.com/harfbuzz/harfbuzz/issues/1818

Docs: fix a typo in function name

hb_set_previous_range docs: fix presumed copy/paste error

Docs typo fix: slower → lower

[amalgam] Use it in cmake port and fix conflicts (#1812)

[amalgam] Include integration source files as well

Just for those that are normally built into libharfbuzz itself.

Part of https://github.com/harfbuzz/harfbuzz/issues/1809

[amalgam] Rename hb.cc to harfbuzz.cc

Part of https://github.com/harfbuzz/harfbuzz/issues/1809

Revert "Use constexpr to replace passthru_ bools"

This reverts commit c4aa10ebc8dc28b1f9c90af2ca2092a7535f8395.

Broke several compilers... Sigh.  The version without constexpr
didn't fully optimize out the unreachable code on clang.
So, revert it is...

Use constexpr to replace passthru_ bools

Sprinkle constexpr around

Being conservative.  Also not sure it makes any real difference
in our codebase.

Remove unused 'inline' specifier

[amalgam] Add hb.cc to git

Part of https://github.com/harfbuzz/harfbuzz/issues/1809

Minor

[amalgam] Fix UCD issue

This actually makes it build now!

Part https://github.com/harfbuzz/harfbuzz/issues/1809

Keeping open to add tests, CI, etc.

[amalgam] Fix CFF

Part of https://github.com/harfbuzz/harfbuzz/issues/1809

[amalgam] Finish fixing Indic-like shapers

Part of https://github.com/harfbuzz/harfbuzz/issues/1809

[use] Remove Syriac features

This was non-standard, and unused anyway.

[amalgam] More Indic-like issues

Part of https://github.com/harfbuzz/harfbuzz/issues/1809

[amalgam] More

Part of https://github.com/harfbuzz/harfbuzz/issues/1809

[amalgam] Fix most duplicate-id instances in Indic-like shapers

Part of https://github.com/harfbuzz/harfbuzz/issues/1809

Add make rule to build hb.cc

Part of https://github.com/harfbuzz/harfbuzz/issues/1809

Add ucd-table make target

add bimap test along with bug fix/tweaks

Merge pull request #1806 from carlo-bramini/master

Make harfbuzz working on all existing versions of Windows

[dwrite] Apply minor style improves

Fix error rised by GCC8+

Use lower case file name with #include

I tried to cross compile harfbuzz for Windows and an error was generated because `DWrite_1.h` was not found.
This happened because the filesystem is case sensitive and for this reason that include file was not found.
The right name of the file to be used is `dwrite_1.h`, with all letters not capitalized:
https://docs.microsoft.com/en-us/windows/desktop/api/dwrite_1/
I also verified in the installation of VS2017 with Windows Kit v10 and in that place it was also lower case.
So, in my opinion it should be better to change this.

Empty DIRECTWRITE_LIBS

Not used anymore since DWRITE is loaded dynamically.

Dynamically load DWRITE

Also checks if DWriteCreateFactory() has been executed successfully.

[config] Fix CoreText build with NO_AAT

Apply some minor improves on CFFIndex

minor, reuse StructAtOffset logic in StructAtOffsetOrNull

minor style improve in hb-cff-interp-common.hh

style fix for pylint complain

[config] Add links

[test] Make Unicode tests strict against internal UCD

https://github.com/harfbuzz/harfbuzz/pull/1799

Test at least one character per Unicode version

Merge pull request #1800 from harfbuzz/harfbuzz/cffnull_fix2

[CFF] fix for Subrs null ptr access

add test case file

alternate fix for https://crbug.com/971933

[config] Don't disable emoji sequences in HB_TINY

It makes sense to disable this code these if editing is not needed.
However, this is also necessary to correctly display emoji sequences
in right-to-left direction.  For that reason, don't auto-disable it.

[config] Compile out modified combining-class if HB_NO_OT_SHAPE

Part of https://github.com/harfbuzz/harfbuzz/issues/1652

[emoji] Port generator to packtab

[config] Add HB_NO_EMOJI

Part of https://github.com/harfbuzz/harfbuzz/issues/1652

[config] Add HB_NO_SHAPER

Don't know who would want when why.  But makes sense to have.

[config] Add HB_NO_OT_TAG

Part of https://github.com/harfbuzz/harfbuzz/issues/1652

[config] Fix build with HB_NO_OT_LAYOUT

[config] Add dependency

[config] Add dependency

[config] Rename HB_NO_SHAPE_AAT to HB_NO_AAT_SHAPE

[config] Add HB_NO_OT_LAYOUT

Part of https://github.com/harfbuzz/harfbuzz/issues/1652

[config] Enable HB_NO_OT_FONT in HB_NO_OT

[config] Add HB_NO_OT_SHAPE / HB_NO_OT

Part of https://github.com/harfbuzz/harfbuzz/issues/1652

Fail compile if no shapers enabled

[src] Add make targets "tiny" and "tinyz"

2.5.3

[gen-ucd] Protect against accidents like previous commit

https://github.com/harfbuzz/harfbuzz/pull/1796

[ucd] Include scripts added in Unicode 10 or later

minor

add ops & methods to hb_bimap_t making it more like hb_map_t
moved has () to hb_bimap_t from hb_inc_bimap_t
moved identity () to hb_inc_bimap_t
removed forward()

add hb_bimap_t, subclass hb_inc_bimap_t replacing CFF::remap_t

Categorize U+1133B for use in Tamil

Correct "nonunihan" to "nounihan"

Replace create_from_file with empty blob if HB_NO_OPEN is defined

Cast long->size_t to ensure comparison of similar types

[ucd] Use custom encoding to shrink composition data

Saves another 2.5kb.

Part of https://github.com/harfbuzz/harfbuzz/issues/1652

[ucd] Save a few more bytes

Part of https://github.com/harfbuzz/harfbuzz/issues/1652

[subset] VORG table to use _subset2 method and new iterator frameworks

Merge pull request #1788 from jameshilliard/configure-svg

Add missing cairo-svg dependency to test-ot-color

Add missing cairo-svg dependency to test-ot-color

[config/ucd] Add HB_NO_UNICODE_UNASSIGNED and activate in HB_TINY

Saves another 12kb:

$ python ./gen-ucd-table.py ucd.nounihan.grouped.zip > hb-ucd-table.hh && make -j5 CPPFLAGS='-Os -DHB_TINY' -C ~/hb/build/src/  && size ~/hb/build/src/.libs/libharfbuzz_la-hb-ucd.o
INFO: Loading UCDXML...
INFO: Preparing data tables...
INFO: Generating output...
INFO:   Compression=1:
INFO:       Dataset=gc       FullCost=18612
INFO:       Dataset=ccc      FullCost=3550
INFO:       Dataset=bmg      FullCost=1548
INFO:       Dataset=sc       FullCost=17765
INFO:       Dataset=dm       FullCost=13325
INFO:   Compression=3:
INFO:       Dataset=gc       FullCost=10726
INFO:       Dataset=ccc      FullCost=2389
INFO:       Dataset=bmg      FullCost=1052
INFO:       Dataset=sc       FullCost=13669
INFO:       Dataset=dm       FullCost=7780
INFO:   Compression=5:
INFO:       Dataset=gc       FullCost=8274
INFO:       Dataset=ccc      FullCost=2055
INFO:       Dataset=bmg      FullCost=908
INFO:       Dataset=sc       FullCost=4073
INFO:       Dataset=dm       FullCost=7780
INFO: Done.

Part of https://github.com/harfbuzz/harfbuzz/issues/1652

[config] Make test build under HB_TINY

Don't define hb_blob_create_from_file if HB_NO_OPEN is defined

Fix build with -O0

message_impl was not defined.  That causes trouble if compiler didn't
optimize the unreachable call out...

2.5.2