Sync OpenBSD patchset 1119:

Switch all of the various choose- and list- commands over to the format
infrastructure, from Thomas Adam.

tmux.h

@@ -88,6 +88,37 @@ extern char   **environ;
 #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
 #endif
 
+/* Default format templates. */
+#define DEFAULT_BUFFER_LIST_TEMPLATE				\
+	"#{line}: #{buffer_size} bytes: \"#{buffer_sample}\""
+#define DEFAULT_CLIENT_TEMPLATE					\
+	"#{client_tty}: #{session_name} "			\
+	"[#client_width}x#{client_height} #{client_termname}]"	\
+	"{?client_utf8, (utf8),} #{?client_readonly, (ro),}"
+#define DEFAULT_DISPLAY_MESSAGE_TEMPLATE			\
+	"[#{session_name}] #{window_index}:"			\
+	"#{window_name}, current pane #{pane_index} "		\
+	"- (%H:%M %d-%b-%y)"
+#define DEFAULT_FIND_WINDOW_TEMPLATE				\
+	"#{window_index}: #{window_name} "			\
+	"[#{window_width}x#{window_height}] "			\
+	"(#{window_panes} panes) #{window_find_matches}"
+#define DEFAULT_SESSION_TEMPLATE \
+	"#{session_name}: #{session_windows} windows "		\
+	"(created #{session_created_string}) "			\
+	"[#{session_width}x#{session_height}]"			\
+	"#{?session_grouped, (group ,}"				\
+	"#{session_group}#{?session_grouped,),}"		\
+	"#{?session_attached, (attached),}"
+#define DEFAULT_WINDOW_TEMPLATE					\
+	"#{window_index}: #{window_name}#{window_flags} "	\
+	"(#{window_panes} panes) "				\
+	"[#{window_width}x#{window_height}] "			\
+	"[layout #{window_layout}] #{window_id}"		\
+	"#{?window_active, (active),}"
+#define DEFAULT_PANE_INFO_TEMPLATE				\
+	"#{session_name}:#{window_index}.#{pane_index}"
+
 /* Bell option values. */
 #define BELL_NONE 0
 #define BELL_ANY 1
@@ -1402,6 +1433,7 @@ void		 format_client(struct format_tree *, struct client *);
 void		 format_winlink(
 		     struct format_tree *, struct session *, struct winlink *);
 void		 format_window_pane(struct format_tree *, struct window_pane *);
+void		 format_paste_buffer(struct format_tree *, struct paste_buffer *);
 
 /* mode-key.c */
 extern const struct mode_key_table mode_key_tables[];