Save and restore active and alternate windows for grouped sessions

CHANGELOG.md

@@ -4,6 +4,7 @@
 - add link to the wiki page for "first pane/window issue" to the README as well
   as other tweaks
 - save and restore grouped sessions (used with multi-monitor workflow)
+- save and restore active and alternate windows in grouped sessions
 
 ### v1.5.0, 2014-11-09
 - add support for restoring neovim sessions

scripts/restore.sh

@@ -186,15 +186,25 @@ restore_active_pane_for_each_window() {
 restore_grouped_session() {
 	local grouped_session="$1"
 	echo "$grouped_session" |
-	while IFS=$'\t' read line_type grouped_session original_session; do
+	while IFS=$'\t' read line_type grouped_session original_session alternate_window active_window; do
 		TMUX="" tmux -S "$(tmux_socket)" new-session -d -s "$grouped_session" -t "$original_session"
 	done
 }
 
+restore_active_and_alternate_windows_for_grouped_sessions() {
+	local grouped_session="$1"
+	echo "$grouped_session" |
+	while IFS=$'\t' read line_type grouped_session original_session alternate_window_index active_window_index; do
+		tmux switch-client -t "${grouped_session}:${alternate_window_index}"
+		tmux switch-client -t "${grouped_session}:${active_window_index}"
+	done
+}
+
 restore_grouped_sessions() {
 	while read line; do
 		if is_line_type "grouped_session" "$line"; then
 			restore_grouped_session "$line"
+			restore_active_and_alternate_windows_for_grouped_sessions "$line"
 		fi
 	done < $(last_resurrect_file)
 }
@@ -227,7 +237,7 @@ main() {
 		# below functions restore exact cursor positions
 		restore_active_pane_for_each_window
 		restore_zoomed_windows
-		restore_grouped_sessions
+		restore_grouped_sessions  # also restores active and alt windows for grouped sessions
 		restore_active_and_alternate_windows
 		restore_active_and_alternate_sessions
 		stop_spinner

scripts/save.sh

@@ -114,6 +114,18 @@ save_shell_history() {
 	fi
 }
 
+get_active_window_index() {
+	local session_name="$1"
+	tmux list-windows -t "$session_name" -F "#{window_flags} #{window_index}" |
+		awk '$1 ~ /\*/ { print $2; }'
+}
+
+get_alternate_window_index() {
+	local session_name="$1"
+	tmux list-windows -t "$session_name" -F "#{window_flags} #{window_index}" |
+		awk '$1 ~ /-/ { print $2; }'
+}
+
 dump_grouped_sessions() {
 	local current_session_group=""
 	local original_session
@@ -128,7 +140,9 @@ dump_grouped_sessions() {
 				current_session_group="$session_group"
 			else
 				# this session "points" to the original session
-				echo "grouped_session${d}${session_name}${d}${original_session}"
+				active_window_index="$(get_active_window_index "$session_name")"
+				alternate_window_index="$(get_alternate_window_index "$session_name")"
+				echo "grouped_session${d}${session_name}${d}${original_session}${d}${alternate_window_index}${d}${active_window_index}"
 			fi
 		done
 }