Allow a command to be specified to display-panes, similar to

command-prompt, rather than always just selecting the pane.

cmd-display-panes.c

@@ -18,19 +18,25 @@
 
 #include <sys/types.h>
 
+#include <ctype.h>
+#include <stdlib.h>
+
 #include "tmux.h"
 
 /*
  * Display panes on a client.
  */
 
-enum cmd_retval	 cmd_display_panes_exec(struct cmd *, struct cmd_q *);
+static enum cmd_retval	 cmd_display_panes_exec(struct cmd *, struct cmd_q *);
+
+static void		 cmd_display_panes_callback(struct client *,
+			     struct window_pane *);
 
 const struct cmd_entry cmd_display_panes_entry = {
 	.name = "display-panes",
 	.alias = "displayp",
 
-	.args = { "t:", 0, 0 },
+	.args = { "t:", 0, 1 },
 	.usage = CMD_TARGET_CLIENT_USAGE,
 
 	.tflag = CMD_CLIENT,
@@ -39,10 +45,53 @@ const struct cmd_entry cmd_display_panes_entry = {
 	.exec = cmd_display_panes_exec
 };
 
-enum cmd_retval
-cmd_display_panes_exec(__unused struct cmd *self, struct cmd_q *cmdq)
+static enum cmd_retval
+cmd_display_panes_exec(struct cmd *self, struct cmd_q *cmdq)
 {
-	server_set_identify(cmdq->state.c);
+	struct args	*args = self->args;
+	struct client	*c = cmdq->state.c;
+
+	if (c->identify_callback != NULL)
+		return (CMD_RETURN_NORMAL);
+
+	c->identify_callback = cmd_display_panes_callback;
+	if (args->argc != 0)
+		c->identify_callback_data = xstrdup(args->argv[0]);
+	else
+		c->identify_callback_data = xstrdup("select-pane -t '%%'");
+
+	server_set_identify(c);
 
 	return (CMD_RETURN_NORMAL);
 }
+
+static void
+cmd_display_panes_callback(struct client *c, struct window_pane *wp)
+{
+	struct cmd_list	*cmdlist;
+	char		*template, *cmd, *expanded, *cause;
+
+	template = c->identify_callback_data;
+	if (wp != NULL) {
+		xasprintf(&expanded, "%%%u", wp->id);
+		cmd = cmd_template_replace(template, expanded, 1);
+
+		if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) {
+			if (cause != NULL) {
+				*cause = toupper((u_char) *cause);
+				status_message_set(c, "%s", cause);
+				free(cause);
+			}
+		} else {
+			cmdq_run(c->cmdq, cmdlist, NULL);
+			cmd_list_free(cmdlist);
+		}
+
+		free(cmd);
+		free(expanded);
+	}
+
+	free(c->identify_callback_data);
+	c->identify_callback_data = NULL;
+	c->identify_callback = NULL;
+}

server-client.c

@@ -184,6 +184,7 @@ server_client_lost(struct client *c)
 
 	c->flags |= CLIENT_DEAD;
 
+	server_clear_identify(c, NULL);
 	status_prompt_clear(c);
 	status_message_clear(c);
 
@@ -606,16 +607,16 @@ server_client_handle_key(struct client *c, key_code key)
 			return;
 		window_unzoom(w);
 		wp = window_pane_at_index(w, key - '0');
-		if (wp != NULL && window_pane_visible(wp))
-			window_set_active_pane(w, wp);
-		server_clear_identify(c);
+		if (wp != NULL && !window_pane_visible(wp))
+			wp = NULL;
+		server_clear_identify(c, wp);
 		return;
 	}
 
 	/* Handle status line. */
 	if (!(c->flags & CLIENT_READONLY)) {
 		status_message_clear(c);
-		server_clear_identify(c);
+		server_clear_identify(c, NULL);
 	}
 	if (c->prompt_string != NULL) {
 		if (!(c->flags & CLIENT_READONLY))

server-fn.c

@@ -441,21 +441,23 @@ server_set_identify(struct client *c)
 }
 
 void
-server_clear_identify(struct client *c)
+server_clear_identify(struct client *c, struct window_pane *wp)
 {
-	if (c->flags & CLIENT_IDENTIFY) {
-		c->flags &= ~CLIENT_IDENTIFY;
-		c->tty.flags &= ~(TTY_FREEZE|TTY_NOCURSOR);
-		server_redraw_client(c);
-	}
+	if (~c->flags & CLIENT_IDENTIFY)
+		return;
+	c->flags &= ~CLIENT_IDENTIFY;
+
+	if (c->identify_callback != NULL)
+		c->identify_callback(c, wp);
+
+	c->tty.flags &= ~(TTY_FREEZE|TTY_NOCURSOR);
+	server_redraw_client(c);
 }
 
 void
 server_callback_identify(__unused int fd, __unused short events, void *data)
 {
-	struct client	*c = data;
-
-	server_clear_identify(c);
+	server_clear_identify(data, NULL);
 }
 
 /* Set stdin callback. */

tmux.1

@@ -1458,7 +1458,11 @@ flag, see the
 .Sx FORMATS
 section.
 This command works only if at least one client is attached.
-.It Ic display-panes Op Fl t Ar target-client
+.It Xo
+.Ic display-panes
+.Op Fl t Ar target-client
+.Op Ar template
+.Xc
 .D1 (alias: Ic displayp )
 Display a visible indicator of each pane shown by
 .Ar target-client .
@@ -1468,11 +1472,18 @@ See the
 and
 .Ic display-panes-active-colour
 session options.
-While the indicator is on screen, a pane may be selected with the
+While the indicator is on screen, a pane may be chosen with the
 .Ql 0
 to
 .Ql 9
-keys.
+keys, which will cause
+.Ar template
+to be executed as a command with
+.Ql %%
+substituted by the pane ID.
+The default
+.Ar template
+is "select-pane -t '%%'".
 .It Xo Ic find-window
 .Op Fl CNT
 .Op Fl F Ar format

tmux.h

@@ -1277,6 +1277,8 @@ struct client {
 	struct key_table *keytable;
 
 	struct event	 identify_timer;
+	void		(*identify_callback)(struct client *, struct window_pane *);
+	void		*identify_callback_data;
 
 	char		*message_string;
 	struct event	 message_timer;
@@ -1937,7 +1939,7 @@ void	 server_destroy_session_group(struct session *);
 void	 server_destroy_session(struct session *);
 void	 server_check_unattached(void);
 void	 server_set_identify(struct client *);
-void	 server_clear_identify(struct client *);
+void	 server_clear_identify(struct client *, struct window_pane *);
 int	 server_set_stdin_callback(struct client *, void (*)(struct client *,
 	     int, void *), void *, char **);
 void	 server_unzoom_window(struct window *);

window.c

@@ -26,6 +26,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <termios.h>
+#include <time.h>
 #include <unistd.h>
 #include <util.h>