How to hold a persistent connection to a unix socket kitty listens on?

[Congee]

Run kitty as kitty --single-instance -o allow_remote_control=yes --listen-on=unix:/tmp/kitty.socket

cat | socat - unix:/tmp/kitty.socket
Now in another window do
kitten @ ls,
it hangs until you terminates the connection in the first window.

The use case is piping vim statusline updates to kitty thru a persistent socket connection. Of course I could work it around by creating then destroying a connection on every statusline update, or I could print control characters to the tty.

Both approaches have drawbacks. Creating and destroying connections obviously have performance penalty (I haven't tested the performance, though). And, printing to the tty isn't thread-safe. Each print() is prone to interleaving characters with other print() instructions thus resulting in corrupted control sequence. This is exactly the reason I switched from wezterm to kitty.

[kovidgoyal]

You cannot. There is no significant performance penalty to opening a new connection and closing it after sending your update. Try it and see.

[kovidgoyal]

Oh and this will fix the issue of kitty not responding on the second socket while the first is open:
b2b8ede