Feature request: Persist scrollback buffer

[alephnull]

It is a shame to lose the buffer because a quick restart was needed.

If it is possible via a kitten, please do help me get started.

[kovidgoyal]

I'm afraid I dont have the time to help you write a kitten. But basically you would write a UI less kitten that uses the as_text() method of the window object to get the text and save it to a file.

And when called in the restarted kitty, read the file and use window.paste_bytes()

See https://sw.kovidgoyal.net/kitty/kittens/custom.html

[jason0x43]

I'm interested in writing a kitten for saving and restoring the scrollback buffer. I figured out how to save a window's buffer to a file, but not how to load the contents into a new window. I'm assuming I'd want to paste the bytes into the buffer before loading the shell, but I'm not sure how to do that in a kitten. Any pointers?

[kovidgoyal]

assuming you are saving it as ANSI text simply call window.write_to_child(test). If you want to do it before the child process runs, then use launch with --stdin-source

[jason0x43]

Apparently I was making that harder than I needed to. Calling launch with a simple script that cats the saved state before execing the new shell seems to work.

#!/bin/zsh
cat $HOME/scrollback.txt
exec zsh