This should make True Color (24-bit) and italics work in your tmux session and vim/neovim when using Alacritty (and should be compatible with any other terminal emulator, including Kitty).
Running this script should look the same in tmux as without.
curl -s https://gist.githubusercontent.com/lifepillar/09a44b8cf0f9397465614e622979107f/raw/24-bit-color.sh >24-bit-color.sh
| package com.gabrielbauman.gist; | |
| import java.util.regex.Pattern; | |
| public enum CardType { | |
| UNKNOWN, | |
| VISA("^4[0-9]{12}(?:[0-9]{3}){0,2}$"), | |
| MASTERCARD("^(?:5[1-5]|2(?!2([01]|20)|7(2[1-9]|3))[2-7])\\d{14}$"), | |
| AMERICAN_EXPRESS("^3[47][0-9]{13}$"), |
| # 0 is too far from ` ;) | |
| set -g base-index 1 | |
| # Automatically set window title | |
| set-window-option -g automatic-rename on | |
| set-option -g set-titles on | |
| #set -g default-terminal screen-256color | |
| set -g status-keys vi | |
| set -g history-limit 10000 |
