Symbol: TTYC_BIDI
usr.bin/tmux/screen-redraw.c
1620
if ((c->flags & CLIENT_UTF8) && tty_term_has(tty->term, TTYC_BIDI))
usr.bin/tmux/tty-term.c
61
[TTYC_BIDI] = { TTYCODE_STRING, "Bidi" },