Add set-hook -R to run a hook immediately (useful to set multiple hooks

to the same thing).

cmd-set-hook.c

@@ -33,8 +33,8 @@ const struct cmd_entry cmd_set_hook_entry = {
 	.name = "set-hook",
 	.alias = NULL,
 
-	.args = { "gt:u", 1, 2 },
+	.args = { "gRt:u", 1, 2 },
-	.usage = "[-gu] " CMD_TARGET_SESSION_USAGE " hook-name [command]",
+	.usage = "[-gRu] " CMD_TARGET_SESSION_USAGE " hook-name [command]",
 
 	.target = { 't', CMD_FIND_SESSION, CMD_FIND_CANFAIL },
 
@@ -101,18 +101,21 @@ cmd_set_hook_exec(struct cmd *self, struct cmdq_item *item)
 	else
 		cmd = args->argv[1];
 
+	if (cmd != NULL && (args_has(args, 'R') || args_has(args, 'u'))) {
+		cmdq_error(item, "no command allowed");
+		return (CMD_RETURN_ERROR);
+	}
+	if (args_has(args, 'R')) {
+		notify_hook(item, name);
+		return (CMD_RETURN_NORMAL);
+	}
 	if (args_has(args, 'u')) {
-		if (cmd != NULL) {
-			cmdq_error(item, "command passed to unset hook: %s",
-			    name);
-			return (CMD_RETURN_ERROR);
-		}
 		hooks_remove(hooks, name);
 		return (CMD_RETURN_NORMAL);
 	}
 
 	if (cmd == NULL) {
-		cmdq_error(item, "no command to set hook: %s", name);
+		cmdq_error(item, "no command given");
 		return (CMD_RETURN_ERROR);
 	}
 	cmdlist = cmd_string_parse(cmd, NULL, 0, &cause);

notify.c

@@ -36,7 +36,7 @@ struct notify_entry {
 };
 
 static void
-notify_hook(struct cmdq_item *item, struct notify_entry *ne)
+notify_hook1(struct cmdq_item *item, struct notify_entry *ne)
 {
 	struct cmd_find_state	 fs;
 	struct hook		*hook;
@@ -102,7 +102,7 @@ notify_callback(struct cmdq_item *item, void *data)
 	if (strcmp(ne->name, "session-window-changed") == 0)
 		control_notify_session_window_changed(ne->session);
 
-	notify_hook(item, ne);
+	notify_hook1(item, ne);
 
 	if (ne->client != NULL)
 		server_client_unref(ne->client);
@@ -154,6 +154,24 @@ notify_add(const char *name, struct cmd_find_state *fs, struct client *c,
 	cmdq_append(NULL, new_item);
 }
 
+void
+notify_hook(struct cmdq_item *item, const char *name)
+{
+	struct notify_entry	ne;
+
+	memset(&ne, 0, sizeof ne);
+
+	ne.name = name;
+	cmd_find_copy_state(&ne.fs, &item->target);
+
+	ne.client = item->client;
+	ne.session = item->target.s;
+	ne.window = item->target.w;
+	ne.pane = item->target.wp->id;
+
+	notify_hook1(item, &ne);
+}
+
 void
 notify_input(struct window_pane *wp, struct evbuffer *input)
 {

tmux.1

@@ -3452,12 +3452,14 @@ Run when a window is unlinked from a session.
 Hooks are managed with these commands:
 .Bl -tag -width Ds
 .It Xo Ic set-hook
-.Op Fl gu
+.Op Fl gRu
 .Op Fl t Ar target-session
 .Ar hook-name
 .Ar command
 .Xc
-Sets (or with
+Without
+.Fl R,
+sets (or with
 .Fl u
 unsets) hook
 .Ar hook-name
@@ -3473,6 +3475,12 @@ hooks (for
 with
 .Fl t ) .
 Like options, session hooks inherit from the global ones.
+.Pp
+With
+.Fl R ,
+run
+.Ar hook-name
+immediately.
 .It Xo Ic show-hooks
 .Op Fl g
 .Op Fl t Ar target-session

tmux.h

@@ -1594,6 +1594,7 @@ void printflike(4, 5) hooks_insert(struct hooks *, struct cmdq_item *,
 		    struct cmd_find_state *, const char *, ...);
 
 /* notify.c */
+void	notify_hook(struct cmdq_item *, const char *);
 void	notify_input(struct window_pane *, struct evbuffer *);
 void	notify_client(const char *, struct client *);
 void	notify_session(const char *, struct session *);