AAT::Lookup has no other way to detect whether it is returned from
a real and sanitized font data or from a null pool, this checks if
the table has been recognized valid by sanitizer by checking
table's major version which is zero if returned from a null pool and
non-zero if is from a sanitized font data, it is expected the other
calls of the table (unlikely to have more calls however) also do a
similar version check before calling the lookups used on the table.
* [aat] Fix implementation of AAT kerning for Geeza Pro.
Despite what the comment in the code used to say, it appears that Geeza Pro
does rely on accumulating kerning values from successive subtables. With
this change, the results now match Core Text rendering (and avoid the clear
visual breakage reported in #2358).
Testcase: U+0644,U+064E,U+0645,U+064E,U+0651,U+0627
Fixes#2358.
* [aat] Update test expectations, add new testcase.
This adds a seperate library like with autotools.
This also fixes the ico feature option which was just set to required:false
when disabled instead of really disabling it.
Disabling is still broken with msvc because it then tries to find the library
another way, but that's broken for all other deps as well so I left it as is.
For tests only test-unicode.c is using icu specific functions so split it out
into its own category which depends on harfbuzz-icu.
Fixes#2338
It assumed that stdout of a subprocess in binary mode was using
utf-8 which isn't the case. Instead open stdout of the subprocess
in text mode and let Python handle the decoding.
The test is added in 7035c9cd but the same font is available in older versions of macOS
so let's run it in older versions also.
It doesn't matter much, more for consistency reasons.
Fixes https://crbug.com/oss-fuzz/21560
revert () does not clean up useless object_t. Adjust the order of
subsetting substitutions and conditions to avoid dangling object_t.
A few simple testcases to confirm that setting liga=0 does not break shaping with
the Tibetan AAT font Kokonor, but does still disable common ligatures in Times.
Ebrahim Byagowi
Qunxin Liu
David Corbett
jfkthame
Evgeniy Reizner
ckitagawa
Christoph Reiter
ariza
Garret Rieger