The PLATFORM(MAC) wrapping USE(ATSUI) is redundant, since right now it's only defined for Mac. This also makes it impossible moving forward for us to use it in PLATFORM(CHROMIUM) on Mac OS, since we don't define PLATFORM(MAC).
Another solution would be to change these lines to PLATFORM(MAC) || PLATFORM(CHROMIUM) but that seems excessive. Just let the platforms that want to use ATSUI define ATSUI and avoid the extraneous ifdef cruft.
Created attachment 24569 [details]
Comment on attachment 24569 [details]