Significant typing lag when large scrollback buffer

[AdamWagner]

To reproduce:

# navigate to home directory 
# and print a large amount of content to the screen. E.g.,
cd ~
tree

# invoke the search kitten and type a query

When I follow the steps above, there is a significant (700ms?) delay between pressing a key a the character appearing on the screen. Such a delay makes it difficult to type without making an error.

I do not have this issue on a fresh tab with a small amount (e.g., ls) of content in the scrollback buffer.

If you're able to reproduce this, perhaps search should be executed asynchronously so that user input isn't blocked.

[trygveaa]

It's not just the kitten that hangs, it's all of kitty, so it won't help to execute the search asynchronously unfortunately.

So apart from solving the issue in kitty, I think the search kitten itself has these two potential solutions:

1. Disable incremental search when the scrollback is large.
2. Implement a debounce, so it doesn't search until after you've stopped typing for a short while.