tmux: why is my pane name forcibly suffixed with a "Z" char?

Question

See my screenshot of tmux, some pane's title always get a suffix "Z" or "-Z", regardless that I have rename them.

Is there anyone can fix this issue?

My tmux version is 3.2a. OS is Ubuntu Jammy.

Answer 1

The tmux manual has a section about the status line.

the window list shows the index, name and (if any) flag of the windows

The characters - and Z are flags:

Symbol	Meaning
-	Marks the last window (previously selected).
Z	The window's active pane is zoomed.

If you don't want these flags, set the options window-status-format and window-status-current-format to values that don't contain the #{window_flags} format escape.

set-option -g window-status-format "#I:#W"
set-option -g window-status-current-format "#I:#W"