shift+alt and
ctrl+alt.
Many of the existing escape codes used to encode these events are ambiguous
with different key presses mapping to the same escape code.
No way to handle different types of keyboard events, such as press, release or repeat
No reliable way to distinguish single
Esc key presses from the start of a
escape sequence. Currently, client programs use fragile timing related hacks
for this, leading to bugs, for example:
neovim #2035.
To solve these issues and others, kitty has created a new keyboard protocol,
that is backward compatible but allows applications to opt-in to support more