Symbol: MOUSE_BUTTON_1
usr.bin/tmux/menu.c
327
if (MOUSE_BUTTONS(m->b) != MOUSE_BUTTON_1)
usr.bin/tmux/popup.c
607
if (MOUSE_BUTTONS(m->lb) == MOUSE_BUTTON_1)
usr.bin/tmux/server-client.c
997
if (MOUSE_BUTTONS(b) == MOUSE_BUTTON_1)