Resurrect file prefix and extension vars

scripts/helpers.sh

@@ -2,6 +2,8 @@ default_resurrect_dir="$HOME/.tmux/resurrect"
 resurrect_dir_option="@resurrect-dir"
 
 SUPPORTED_VERSION="1.9"
+RESURRECT_FILE_PREFIX="tmux_resurrect"
+RESURRECT_FILE_EXTENSION="txt"
 _RESURRECT_DIR=""
 _RESURRECT_FILE_PATH=""
 
@@ -111,7 +113,7 @@ _RESURRECT_DIR="$(resurrect_dir)"
 resurrect_file_path() {
 	if [ -z "$_RESURRECT_FILE_PATH" ]; then
 		local timestamp="$(date +"%Y-%m-%dT%H:%M:%S")"
-		echo "$(resurrect_dir)/tmux_resurrect_${timestamp}.txt"
+		echo "$(resurrect_dir)/${RESURRECT_FILE_PREFIX}_${timestamp}.${RESURRECT_FILE_EXTENSION}"
 	else
 		echo "$_RESURRECT_FILE_PATH"
 	fi

scripts/save.sh

@@ -281,7 +281,7 @@ dump_shell_history() {
 remove_old_backups() {
 	# remove backup files older than 30 days, but keep at least 5 copies of backup.
 	local -a files
-	files=($(ls -t $(resurrect_dir)/*.txt | tail -n +6))
+	files=($(ls -t $(resurrect_dir)/${RESURRECT_FILE_PREFIX}_*.${RESURRECT_FILE_EXTENSION} | tail -n +6))
 	[[ ${#files[@]} -eq 0 ]] || find "${files[@]}" -type f -mtime +30 -delete
 }