What is the intended way of enabling kitty keyboard protocol?

[Jinwook Jeong]

Hi,

According to https://gitlab.com/gnachman/iterm2/-/issues/10017 iTerm2 supports kitty keyboard protocol, but I couldn't find any instructions on how to enable it, except for a single option whose tooltip has the word "kitty": "Apps can change how keys are reported".

The tooltip reads:

Some programs (such as vim and emacs) want to put the numeric keypad in "application" mode. Turn this off if you always want it to act as a numeric keypad. NOTE: This setting affects the older xterm control sequence (CSI > Pp m), not the Kitty control sequence related to CSI > flags u.

It suggests that enabling this option wouldn't achieve what I need—but in practice, it does.

Can anyone clarify what's going on here?

[George Nachman]

The simplest control sequence to enable the kitty keyboard protocol is CSI > 1 u. Unless you’re writing a program that will parse these codes, you probably don’t want to send this yourself. If you are, though, the documentation is here: https://sw.kovidgoyal.net/kitty/keyboard-protocol/

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[Jinwook Jeong]

Is the "Apps can change how keys are reported" intended for kitty keyboard protocol enablement?

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[George Nachman]

Yes, enabling that is necessary to allow the control sequence to work. It isn’t just for Kitty, though—it affects all the key reporting modes.

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