There’s lots of partial/out-of-date info on this so I thought I’d post what actually worked for me. Configure terminfo Create xterm-256color-italic.terminfo: xterm-256color-italic|xterm with 256 colors and italic,
sitm=\E[3m, ritm=\E[23m,
use=xterm-256color, And tmux-256color.terminfo: tmux-256color|tmux with 256 colors,
ritm=\E[23m, rmso=\E[27m, sitm=\E[3m, smso=\E[7m, Ms@,
khome=\E[1~, kend=\E[4~,
use=xterm-256color, use=screen-256color,