Add a helper to free the list of pending resizes.

usr.bin/tmux/screen-write.c

@@ -1,4 +1,4 @@
-/* $OpenBSD: screen-write.c,v 1.266 2026/06/09 21:22:22 nicm Exp $ */
+/* $OpenBSD: screen-write.c,v 1.267 2026/06/11 14:19:59 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -2772,7 +2772,6 @@ screen_write_alternateon(struct screen_write_ctx *ctx, struct grid_cell *gc,
 {
 	struct tty_ctx			 ttyctx;
 	struct window_pane		*wp = ctx->wp;
-	struct window_pane_resize	*r, *r1;
 
 	if (wp != NULL && !options_get_number(wp->options, "alternate-screen"))
 		return;
@@ -2782,10 +2781,7 @@ screen_write_alternateon(struct screen_write_ctx *ctx, struct grid_cell *gc,
 		return;
 
 	if (wp != NULL) {
-		TAILQ_FOREACH_SAFE (r, &wp->resize_queue, entry, r1) {
-			TAILQ_REMOVE(&wp->resize_queue, r, entry);
-			free(r);
-		}
+		window_pane_clear_resizes(wp, NULL);
 		layout_fix_panes(wp->window, NULL);
 		server_redraw_window_borders(wp->window);
 	}

usr.bin/tmux/server-client.c

@@ -1,4 +1,4 @@
-/* $OpenBSD: server-client.c,v 1.464 2026/06/08 23:06:21 nicm Exp $ */
+/* $OpenBSD: server-client.c,v 1.465 2026/06/11 14:19:59 nicm Exp $ */
 
 /*
  * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -1586,7 +1586,7 @@ server_client_resize_timer(__unused int fd, __unused short events, void *data)
 static void
 server_client_check_pane_resize(struct window_pane *wp)
 {
-	struct window_pane_resize	*r, *r1, *first, *last;
+	struct window_pane_resize	*r, *first, *last;
 	struct timeval			 tv = { .tv_usec = 250000 };
 
 	if (TAILQ_EMPTY(&wp->resize_queue))
@@ -1626,10 +1626,7 @@ server_client_check_pane_resize(struct window_pane *wp)
 	} else if (last->sx != first->osx || last->sy != first->osy) {
 		/* Multiple resizes ending up with a different size. */
 		window_pane_send_resize(wp, last->sx, last->sy);
-		TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
-			TAILQ_REMOVE(&wp->resize_queue, r, entry);
-			free(r);
-		}
+		window_pane_clear_resizes(wp, NULL);
 	} else {
 		/*
 		 * Multiple resizes ending up with the same size. There will
@@ -1640,12 +1637,7 @@ server_client_check_pane_resize(struct window_pane *wp)
 		 */
 		r = TAILQ_PREV(last, window_pane_resizes, entry);
 		window_pane_send_resize(wp, r->sx, r->sy);
-		TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
-			if (r == last)
-				break;
-			TAILQ_REMOVE(&wp->resize_queue, r, entry);
-			free(r);
-		}
+		window_pane_clear_resizes(wp, last);
 		tv.tv_usec = 10000;
 	}
 	evtimer_add(&wp->resize_timer, &tv);

usr.bin/tmux/tmux.h

@@ -1,4 +1,4 @@
-/* $OpenBSD: tmux.h,v 1.1344 2026/06/11 10:16:19 nicm Exp $ */
+/* $OpenBSD: tmux.h,v 1.1345 2026/06/11 14:19:59 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -3418,6 +3418,8 @@ struct window_pane *window_pane_find_by_id_str(const char *);
 struct window_pane *window_pane_find_by_id(u_int);
 int		 window_pane_destroy_ready(struct window_pane *);
 void		 window_pane_resize(struct window_pane *, u_int, u_int);
+void		 window_pane_clear_resizes(struct window_pane *,
+		     struct window_pane_resize *);
 int		 window_pane_set_mode(struct window_pane *,
 		     struct window_pane *, const struct window_mode *,
 		     struct cmd_find_state *, struct args *);

usr.bin/tmux/window.c

@@ -1,4 +1,4 @@
-/* $OpenBSD: window.c,v 1.334 2026/06/10 16:03:14 nicm Exp $ */
+/* $OpenBSD: window.c,v 1.335 2026/06/11 14:19:59 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -1112,9 +1112,6 @@ window_pane_wait_finish(struct window_pane *wp)
 static void
 window_pane_destroy(struct window_pane *wp)
 {
-	struct window_pane_resize	*r;
-	struct window_pane_resize	*r1;
-
 	window_pane_wait_finish(wp);
 
 	window_pane_reset_mode_all(wp);
@@ -1140,10 +1137,7 @@ window_pane_destroy(struct window_pane *wp)
 		event_del(&wp->resize_timer);
 	if (event_initialized(&wp->sync_timer))
 		event_del(&wp->sync_timer);
-	TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
-		TAILQ_REMOVE(&wp->resize_queue, r, entry);
-		free(r);
-	}
+	window_pane_clear_resizes(wp, NULL);
 
 	RB_REMOVE(window_pane_tree, &all_window_panes, wp);
 
@@ -1211,6 +1205,19 @@ window_pane_set_event(struct window_pane *wp)
 	bufferevent_enable(wp->event, EV_READ|EV_WRITE);
 }
 
+void
+window_pane_clear_resizes(struct window_pane *wp, struct window_pane_resize *except)
+{
+	struct window_pane_resize	*r, *r1;
+
+	TAILQ_FOREACH_SAFE(r, &wp->resize_queue, entry, r1) {
+		if (r == except)
+			continue;
+		TAILQ_REMOVE(&wp->resize_queue, r, entry);
+		free(r);
+	}
+}
+
 void
 window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
 {