High Sierra feature – Caps Lock to switch languages

[usr-sse2]

macOS High Sierra adds a new feature – switching keyboards with Caps Lock. (It's only for system-provided layouts, no Russian BG46).

But with VoodooPS2 it's very buggy – most times double-press switches language and single-press activates Caps Lock if no keys pressed within 1 second after, but it's not always so. It should be related to the Sierra Caps Lock workaround and maybe to kCapsLockDoesLock.

[RehabMan]

The bugs are caused by the capslock bug workaround.
As long as we need the workaround (hardcoded in VoodooPS2Keyboard), caps lock cannot be remapped.

[RehabMan]

Capslock can be remapped with ACPI.
Refer to example: SSDT-Swap-LeftControlCapsLock.dsl

[frol]

According to Karabiner EventViewer, pressing CapsLock produces events in a wrong order: key_up -> key_down instead of key_down -> key_up.

Does the remapping CapsLock <-> LeftControl intend to help with the issue and fix the CapsLock button or is it just breaking another button instead of CapsLock?

P.S. I also use CapsLock as a layout switcher and I would like to fix this...

UPD1: Removing the workaround resulted in that a single CapsLock press (down + up) produces only a single event key_down or key_up (it is toggling).

[frol]

FYI, I have patched the issue for myself: acidanthera/bugtracker#435 (comment)