automatic-rename: changelog and comments

Author: bruno-

CHANGELOG.md

@@ -1,6 +1,7 @@
 # Changelog
 
 ### master
+- Proper handling of `automatic-rename` window option.
 
 ### v3.0.0, 2021-08-30
 - save and restore tmux pane contents (@laomaiweng)

scripts/restore.sh

@@ -289,9 +289,13 @@ restore_window_properties() {
 	local window_name
 	\grep '^window' $(last_resurrect_file) |
 		while IFS=$d read line_type session_name window_number window_name window_active window_flags window_layout automatic_rename; do
+			tmux select-layout -t "${session_name}:${window_number}" "$window_layout"
+
+			# Below steps are properly handling window names and automatic-rename
+			# option. `rename-window` is an extra command in some scenarios, but we
+			# opted for always doing it to keep the code simple.
 			window_name="$(remove_first_char "$window_name")"
 			tmux rename-window -t "${session_name}:${window_number}" "$window_name"
-			tmux select-layout -t "${session_name}:${window_number}" "$window_layout"
 			if [ "${automatic_rename}" = ":" ]; then
 				tmux set-option -u -t "${session_name}:${window_number}" automatic-rename
 			else

scripts/save.sh

@@ -246,7 +246,7 @@ dump_windows() {
 				continue
 			fi
 			automatic_rename="$(tmux show-window-options -vt "${session_name}:${window_index}" automatic-rename)"
-			# If the option was unset, place the ":" placeholder instead.
+			# If the option was unset, use ":" as a placeholder.
 			[ -z "${automatic_rename}" ] && automatic_rename=":"
 			echo "${line_type}${d}${session_name}${d}${window_index}${d}${window_name}${d}${window_active}${d}${window_flags}${d}${window_layout}${d}${automatic_rename}"
 		done