Added support for saving and restoring buffers for panes running Bash.

README.md

@@ -157,6 +157,15 @@ foreground when saving. `tmux-resurrect` will send history write command
 to each such pane. To prevent these commands from being added to history themselves,
 add `HISTCONTROL=ignoreboth` to your `.bashrc` (this is set by default in Ubuntu).
 
+#### Restoring tmux buffers (experimental)
+
+In `.tmux.conf`:
+
+    set -g @resurrect-save-tmux-buffers 'on'
+
+Scrollback buffers for individual panes will now be saved and restored. Due to
+technical limitations, this only works for panes which have no program running in foreground when saving. On save, `tmux-resurrect` will capture and save the scrollback buffer from each pane; on restore, `tmux-resurrect` will `cat` each buffer file back to its restored pane. To prevent the latter command from being added to history, add `HISTCONTROL=ignoreboth` to your `.bashrc` (this is set by default in Ubuntu).
+
 ### Other goodies
 
 - [tmux-copycat](https://github.com/tmux-plugins/tmux-copycat) - a plugin for

scripts/helpers.sh

@@ -54,6 +54,11 @@ save_bash_history_option_on() {
 	[ "$option" == "on" ]
 }
 
+save_tmux_buffers_option_on() {
+	local option="$(get_tmux_option "$save_tmux_buffers_option" "off")"
+	[ "$option" == "on" ]
+}
+
 # path helpers
 
 resurrect_dir() {
@@ -74,6 +79,11 @@ resurrect_history_file() {
 	echo "$(resurrect_dir)/bash_history-${pane_id}"
 }
 
+resurrect_buffer_file() {
+	local pane_id="$1"
+	echo "$(resurrect_dir)/tmux_buffer-${pane_id}"
+}
+
 restore_zoomed_windows() {
 	awk 'BEGIN { FS="\t"; OFS="\t" } /^pane/ && $6 ~ /Z/ && $9 == 1 { print $2, $3; }' $(last_resurrect_file) |
 		while IFS=$'\t' read session_name window_number; do

scripts/restore.sh

@@ -156,6 +156,23 @@ restore_shell_history() {
 		done
 }
 
+restore_tmux_buffers() {
+	awk 'BEGIN { FS="\t"; OFS="\t" } /^pane/ { print $2, $3, $7, $10; }' $(last_resurrect_file) |
+		while IFS=$'\t' read session_name window_number pane_index pane_command; do
+			if ! is_pane_registered_as_existing "$session_name" "$window_number" "$pane_index"; then
+				if [ "$pane_command" = "bash" ]; then
+					local pane_id="$session_name:$window_number.$pane_index"
+					local buffer_file="$(resurrect_buffer_file "${pane_id}")"
+					# space before 'cat' is intentional and prevents the command from
+					# being added to history (provided HISTCONTROL=ignorespace/ignoreboth
+					# has been set in bashrc.
+					tmux send-keys -t "${pane_id}" "clear && tmux clear-history" C-m
+					tmux send-keys -t "${pane_id}" " cat ${buffer_file}" C-m
+				fi
+			fi
+		done
+}
+
 restore_all_pane_processes() {
 	if restore_pane_processes_enabled; then
 		local pane_full_command
@@ -207,6 +224,9 @@ main() {
 		if save_bash_history_option_on; then
 			restore_shell_history
 		fi
+		if save_tmux_buffers_option_on; then
+			restore_tmux_buffers
+		fi
 		restore_all_pane_processes
 		# below functions restore exact cursor positions
 		restore_active_pane_for_each_window

scripts/save.sh

@@ -97,6 +97,21 @@ save_shell_history() {
 	fi
 }
 
+save_tmux_buffer() {
+	local pane_id="$1"
+	local pane_command="$2"
+	local full_command="$3"
+	local mode_keys=$(tmux show-window-options -g | awk '/^mode-keys/ {print $2}')
+	local save_command=""
+	local buffer_file="$(resurrect_buffer_file "${pane_id}")"
+	if [ "$pane_command" = "bash" ] && [ "$full_command" = ":" ]; then
+	  tmux capture-pane -S -32768 \; save-buffer -b 0 "${buffer_file}" \; delete-buffer -b 0
+		if [ ! -s "${buffer_file}" ] ;then
+	    rm "${buffer_file}"
+	  fi
+	fi
+}
+
 # translates pane pid to process command running inside a pane
 dump_panes() {
 	local full_command
@@ -128,6 +143,13 @@ dump_bash_history() {
 		done
 }
 
+dump_tmux_buffers() {
+	dump_panes |
+		while IFS=$'\t' read line_type session_name window_number window_name window_active window_flags pane_index dir pane_active pane_command full_command; do
+			save_tmux_buffer "$session_name:$window_number.$pane_index" "$pane_command" "$full_command"
+		done
+}
+
 save_all() {
 	local resurrect_file_path="$(resurrect_file_path)"
 	mkdir -p "$(resurrect_dir)"
@@ -138,6 +160,9 @@ save_all() {
 	if save_bash_history_option_on; then
 		dump_bash_history
 	fi
+	if save_tmux_buffers_option_on; then
+		dump_tmux_buffers
+	fi
 	restore_zoomed_windows
 }
 

scripts/variables.sh

@@ -28,3 +28,5 @@ save_command_strategy_option="@resurrect-save-command-strategy"
 default_save_command_strategy="ps"
 
 bash_history_option="@resurrect-save-bash-history"
+
+save_tmux_buffers_option="@resurrect-save-tmux-buffers"