tmux updates

.tmux.conf

@@ -5,9 +5,9 @@ bind C-a send-prefix
 # basic settings
 set-window-option -g mode-keys vi # vi key
 set-option -g status-keys vi
-set-window-option -g utf8 on
 set -g terminal-overrides 'xterm*:smcup@:rmcup@'
 set -g terminal-overrides 'xterm:colors=256'
+set-option -g default-terminal "tmux-256color"
 
 # copy mode to escape key
 unbind [
@@ -33,14 +33,13 @@ bind l select-pane -R
 set-option -g base-index 1 # start window numbering from 1, not 0
 set-option -g set-titles on
 set-option -g set-titles-string '#S:#I.#P #W' # window number,program name,active (or not)
-set-window-option -g automatic-rename on # auto name
+set-window-option -g automatic-rename off # auto name
 
 # No visual activity
 set -g visual-activity off
 set -g visual-bell off
 
 # status bar
-set-option -g status-utf8 on
 set-option -g status-justify left
 set-option -g status-bg default
 set-option -g status-fg cyan