From 8449ee9e2be0868182fc88758d6fbed9b23b0109 Mon Sep 17 00:00:00 2001
From: Stefan Monnier <monnier@iro.umontreal.ca>
Date: Sun, 4 Feb 2024 12:52:01 -0500
Subject: [PATCH] * src/window.c (set_window_buffer): Flush the
 `base_line_number` cache

(cherry picked from commit a1aa9028f83e5d3da71bdb5877d8baa5d6c1e98a)
---
 src/window.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/window.c b/src/window.c
index 915f591221d..565ad00804f 100644
--- a/src/window.c
+++ b/src/window.c
@@ -4151,6 +4151,8 @@ set_window_buffer (Lisp_Object window, Lisp_Object buffer,
 			     buffer);
       w->start_at_line_beg = false;
       w->force_start = false;
+      /* Flush the base_line cache since it applied to another buffer.  */
+      w->base_line_number = 0;
     }
 
   wset_redisplay (w);
-- 
2.39.5