patch 9.0.0686: the right ALT key does not work on some MS-Windows keyboards Commit: https://github.com/vim/vim/commit/8d8b9758ced52b6303af95ad7e28ae9c5636cdf8 Author: Anton Sharonov <anton.sharonov@gmail.com> Date: Fri Oct 7 16:28:48 2022 +0100 patch 9.0.0686: the right ALT key does not work on some MS-Windows keyboards Problem: The right ALT key does not work on some MS-Windows keyboards. Solution: Adjust the modifiers based on GetKeyState(). (Anoton Sharonov, closes #11300)

# Clang 12 (or Apple clang 13) and later makes a warning '-Wcompound-token-split-by-macro' enable by default.
/^PERL_CFLAGS_EXTRA[[:blank:]]*=/s/$/ -Wno-error=compound-token-split-by-macro/
/^RUBY_CFLAGS_EXTRA[[:blank:]]*=/s/$/ -Wno-error=compound-token-split-by-macro/