Remove SHLVL env using shell alias instead of tmux.conf

shrc

@@ -732,6 +732,7 @@ __realpath(){
     fi
 }
 
+__safe_alias tmux='env -u SHLVL tmux'
 tx(){
     tmux start-server
     if test -z "$1"

tmux.conf

@@ -21,7 +21,6 @@ setw -g mode-mouse off
 #set -g default-command /bin/bash
 
 #set -g default-path "$HOME"
-set-environment -u SHLVL
 
 # try to set title of terminal tmux is running on
 # set -g set-titles off