Prevent tmux from displaying "Activity in window n"

Question

I'd like to prevent tmux from flashing an "Activity in window n" message when there's activity in a non active window. I'd like the only indication of background activity to be the window title color change I have configured.

Relative configuration file lines I have currently:

set status on
setw -g monitor-activity on
set -g visual-activity on
set -g visual-bell on

Does anyone know how I can accomplish this?

Answer 1

According to tmux source code (version 1.8 at hand) (server_window_check_activity(), server-window.c), relevant option is visual-activity which you currently have set to on:

if (options_get_number(&s->options, "visual-activity")) {
    for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
        c = ARRAY_ITEM(&clients, i);
        if (c == NULL || c->session != s)
            continue;
        status_message_set(c, "Activity in window %u",
        winlink_find_by_window(&s->windows, w)->idx);
    }
}

EDIT: Same function, a bit above:

if (!options_get_number(&w->options, "monitor-activity"))
    return (0);

So you may want to try changing monitor-activity too.

EDIT 2: You could always write a patch ;)

Answer 2

In ~/.tmux.conf:

set -g visual-activity off

Right now you have this set to on, which is why you see Activity in window N.

Answer 3

In tmux=2.2, this worked for me:

setw -g monitor-activity on
set-option -g bell-action none

(but set -g visual-activity off as suggested above did not)