I believe wezterm has that feature already. (Like there anything it doesn't have. :) )

Interesting, I'll have to check it out.

I looked at alacritty but I really like using terminal tabs and the alacritty dev is really really against them and I found the dev's attitude to be more than a bit abrasive.

Not that Kovid (kitty's dev) does not come off the same way sometimes, but I tend to agree with Kovid a lot more.