Extend display-message to work for control clients. GitHub issue 3449.

cmd-display-message.c

@@ -68,9 +68,10 @@ cmd_display_message_exec(struct cmd *self, struct cmdq_item *item)
 	struct window_pane	*wp = target->wp;
 	const char		*template;
 	char			*msg, *cause;
-	int			 delay = -1, flags;
+	int			 delay = -1, flags, Nflag = args_has(args, 'N');
 	struct format_tree	*ft;
 	u_int			 count = args_count(args);
+	struct evbuffer		*evb;
 
 	if (args_has(args, 'I')) {
 		if (wp == NULL)
@@ -141,10 +142,15 @@ cmd_display_message_exec(struct cmd *self, struct cmdq_item *item)
 		cmdq_error(item, "%s", msg);
 	else if (args_has(args, 'p'))
 		cmdq_print(item, "%s", msg);
-	else if (tc != NULL) {
+	else if (tc != NULL && (tc->flags & CLIENT_CONTROL)) {
-		status_message_set(tc, delay, 0, args_has(args, 'N'), "%s",
+		evb = evbuffer_new();
-		    msg);
+		if (evb == NULL)
-	}
+			fatalx("out of memory");
+		evbuffer_add_printf(evb, "%%message %s", msg);
+		server_client_print(tc, 0, evb);
+		evbuffer_free(evb);
+	} else if (tc != NULL)
+		status_message_set(tc, delay, 0, Nflag, "%s", msg);
 	free(msg);
 
 	format_free(ft);

cmd-queue.c

@@ -826,68 +826,7 @@ cmdq_guard(struct cmdq_item *item, const char *guard, int flags)
 void
 cmdq_print_data(struct cmdq_item *item, int parse, struct evbuffer *evb)
 {
-	struct client			*c = item->client;
+	server_client_print(item->client, parse, evb);
-	void				*data = EVBUFFER_DATA(evb);
-	size_t				 size = EVBUFFER_LENGTH(evb);
-	struct window_pane		*wp;
-	struct window_mode_entry	*wme;
-	char				*sanitized, *msg, *line;
-
-	if (!parse) {
-		utf8_stravisx(&msg, data, size,
-		    VIS_OCTAL|VIS_CSTYLE|VIS_NOSLASH);
-		log_debug("%s: %s", __func__, msg);
-	} else {
-		msg = EVBUFFER_DATA(evb);
-		if (msg[size - 1] != '\0')
-			evbuffer_add(evb, "", 1);
-	}
-
-	if (c == NULL)
-		goto out;
-
-	if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
-		if (~c->flags & CLIENT_UTF8) {
-			sanitized = utf8_sanitize(msg);
-			if (c->flags & CLIENT_CONTROL)
-				control_write(c, "%s", sanitized);
-			else
-				file_print(c, "%s\n", sanitized);
-			free(sanitized);
-		} else {
-			if (c->flags & CLIENT_CONTROL)
-				control_write(c, "%s", msg);
-			else
-				file_print(c, "%s\n", msg);
-		}
-		goto out;
-	}
-
-	wp = server_client_get_pane(c);
-	wme = TAILQ_FIRST(&wp->modes);
-	if (wme == NULL || wme->mode != &window_view_mode)
-		window_pane_set_mode(wp, NULL, &window_view_mode, NULL, NULL);
-	if (parse) {
-		do {
-			line = evbuffer_readln(evb, NULL, EVBUFFER_EOL_LF);
-			if (line != NULL) {
-				window_copy_add(wp, 1, "%s", line);
-				free(line);
-			}
-		} while (line != NULL);
-
-		size = EVBUFFER_LENGTH(evb);
-		if (size != 0) {
-			line = EVBUFFER_DATA(evb);
-			window_copy_add(wp, 1, "%.*s", (int)size, line);
-		}
-	} else
-		window_copy_add(wp, 0, "%s", msg);
-
-out:
-	if (!parse)
-		free(msg);
-
 }
 
 /* Show message from command. */

server-client.c

@@ -29,6 +29,7 @@
 #include <string.h>
 #include <time.h>
 #include <unistd.h>
+#include <vis.h>
 
 #include "tmux.h"
 
@@ -3239,3 +3240,69 @@ server_client_remove_pane(struct window_pane *wp)
 		}
 	}
 }
+
+/* Print to a client. */
+void
+server_client_print(struct client *c, int parse, struct evbuffer *evb)
+{
+	void				*data = EVBUFFER_DATA(evb);
+	size_t				 size = EVBUFFER_LENGTH(evb);
+	struct window_pane		*wp;
+	struct window_mode_entry	*wme;
+	char				*sanitized, *msg, *line;
+
+	if (!parse) {
+		utf8_stravisx(&msg, data, size,
+		    VIS_OCTAL|VIS_CSTYLE|VIS_NOSLASH);
+		log_debug("%s: %s", __func__, msg);
+	} else {
+		msg = EVBUFFER_DATA(evb);
+		if (msg[size - 1] != '\0')
+			evbuffer_add(evb, "", 1);
+	}
+
+	if (c == NULL)
+		goto out;
+
+	if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
+		if (~c->flags & CLIENT_UTF8) {
+			sanitized = utf8_sanitize(msg);
+			if (c->flags & CLIENT_CONTROL)
+				control_write(c, "%s", sanitized);
+			else
+				file_print(c, "%s\n", sanitized);
+			free(sanitized);
+		} else {
+			if (c->flags & CLIENT_CONTROL)
+				control_write(c, "%s", msg);
+			else
+				file_print(c, "%s\n", msg);
+		}
+		goto out;
+	}
+
+	wp = server_client_get_pane(c);
+	wme = TAILQ_FIRST(&wp->modes);
+	if (wme == NULL || wme->mode != &window_view_mode)
+		window_pane_set_mode(wp, NULL, &window_view_mode, NULL, NULL);
+	if (parse) {
+		do {
+			line = evbuffer_readln(evb, NULL, EVBUFFER_EOL_LF);
+			if (line != NULL) {
+				window_copy_add(wp, 1, "%s", line);
+				free(line);
+			}
+		} while (line != NULL);
+
+		size = EVBUFFER_LENGTH(evb);
+		if (size != 0) {
+			line = EVBUFFER_DATA(evb);
+			window_copy_add(wp, 1, "%.*s", (int)size, line);
+		}
+	} else
+		window_copy_add(wp, 0, "%s", msg);
+
+out:
+	if (!parse)
+		free(msg);
+}

tmux.1

@@ -6627,6 +6627,10 @@ The window's visible layout is
 .Ar window-visible-layout
 and the window flags are
 .Ar window-flags .
+.It Ic %message Ar message
+A message sent with the
+.Ic display-message
+command.
 .It Ic %output Ar pane-id Ar value
 A window pane produced output.
 .Ar value

tmux.h

@@ -2678,6 +2678,7 @@ struct client_window *server_client_add_client_window(struct client *, u_int);
 struct window_pane *server_client_get_pane(struct client *);
 void	 server_client_set_pane(struct client *, struct window_pane *);
 void	 server_client_remove_pane(struct window_pane *);
+void	 server_client_print(struct client *, int, struct evbuffer *);
 
 /* server-fn.c */
 void	 server_redraw_client(struct client *);