Minor changes to tmux key bindings and names; minor clean-up

src_files/.local/scripts/tmux-session-init

@@ -23,7 +23,7 @@ local target_path=''
 [[ $# -eq 1 ]] && target_path=$1 ||
     target_path=$(find $search_dirs -mindepth 1 -maxdepth 1 -type d | fzf)
 
-if [[ $target_path = "existing" ]]; then target_name=$(echo $existing_sessions | fzf);
+if [[ $target_path = "find-existing" ]]; then target_name=$(echo $existing_sessions | fzf);
 elif [[ $target_path = "hub" ]]; then target_name="hub" && target_path="$HOME";
 elif [[ -n $target_path ]]; then target_name=$(basename "$target_path" | tr . _);
 fi