macos_forward_to_ime_modifier_mask = "SHIFT"#

On macOS systems, this option controls whether modified key presses are routed via the IME when use_ime = true.

When processing a key event, if any modifiers are held, if the modifiers intersect with the value of macos_forward_to_ime_modifier_mask, then the key event is routed to the IME, which may choose to swallow the key event as part of its own state management.

Users of a Japanese IME may wish to set this to "SHIFT|CTRL", but should note that it will prevent certain CTRL key combinations that are commonly used in unix terminal programs from working as expected.