diff --git a/cmd-queue.c b/cmd-queue.c
index 85554a4e..26c7ec32 100644
--- a/cmd-queue.c
+++ b/cmd-queue.c
@@ -834,9 +834,9 @@ cmdq_guard(struct cmdq_item *item, const char *guard, int flags)
 
 /* Show message from command. */
 void
-cmdq_print_data(struct cmdq_item *item, int parse, struct evbuffer *evb)
+cmdq_print_data(struct cmdq_item *item, struct evbuffer *evb)
 {
-	server_client_print(item->client, parse, evb);
+	server_client_print(item->client, 1, evb);
 }
 
 /* Show message from command. */
@@ -854,7 +854,7 @@ cmdq_print(struct cmdq_item *item, const char *fmt, ...)
 	evbuffer_add_vprintf(evb, fmt, ap);
 	va_end(ap);
 
-	cmdq_print_data(item, 0, evb);
+	cmdq_print_data(item, evb);
 	evbuffer_free(evb);
 }
 
diff --git a/cmd-save-buffer.c b/cmd-save-buffer.c
index 3e81500d..7e915af3 100644
--- a/cmd-save-buffer.c
+++ b/cmd-save-buffer.c
@@ -101,7 +101,7 @@ cmd_save_buffer_exec(struct cmd *self, struct cmdq_item *item)
 			if (evb == NULL)
 				fatalx("out of memory");
 			evbuffer_add(evb, bufdata, bufsize);
-			cmdq_print_data(item, 1, evb);
+			cmdq_print_data(item, evb);
 			evbuffer_free(evb);
 			return (CMD_RETURN_NORMAL);
 		}
diff --git a/tmux.1 b/tmux.1
index 708cd2ba..98cf8716 100644
--- a/tmux.1
+++ b/tmux.1
@@ -2342,6 +2342,9 @@ will do nothing.
 The
 .Fl o
 flag jumps to the beginning of the command output instead of the shell prompt.
+Finding the beginning of command output requires the shell to emit an escape
+sequence (\e033]133;C\e033\e\e) to tell tmux where the output begins.
+If the shell does not send these escape sequences, these commands do nothing.
 .Pp
 Copy commands may take an optional buffer prefix argument which is used
 to generate the buffer name (the default is
@@ -4875,6 +4878,7 @@ section.
 .Pp
 .It Ic copy-mode-position-format Ar format
 Format of the position indicator in copy mode.
+.Pp
 .It Xo Ic mode-keys
 .Op Ic vi | emacs
 .Xc
diff --git a/tmux.h b/tmux.h
index a4fc5a77..02e11308 100644
--- a/tmux.h
+++ b/tmux.h
@@ -2727,7 +2727,7 @@ u_int		 cmdq_next(struct client *);
 struct cmdq_item *cmdq_running(struct client *);
 void		 cmdq_guard(struct cmdq_item *, const char *, int);
 void printflike(2, 3) cmdq_print(struct cmdq_item *, const char *, ...);
-void 		 cmdq_print_data(struct cmdq_item *, int, struct evbuffer *);
+void 		 cmdq_print_data(struct cmdq_item *, struct evbuffer *);
 void printflike(2, 3) cmdq_error(struct cmdq_item *, const char *, ...);
 
 /* cmd-wait-for.c */