Subject: bug#50256: thing-at-mouse

From: martin rudalics <[email-masked]>
Date: Thu, 2 Sep 2021 20:46:57 +0200

> Actually, whereas it fixes the reported issue,
 > it breaks everything else: moving point up and down
 > always jumps to the fixed column like goal-column,
 > selecting a completion from the Completions buffer
 > always says "No completion here", 'C-c C-c' in diff-mode
 > jumps to the wrong hunk, etc.

Is the below better?

diff --git a/src/window.c b/src/window.c
index cb8fe5fcdb..e86f50e600 100644
--- a/src/window.c
+++ b/src/window.c
@@ -2199,7 +2199,8 @@ DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p,
      posint = -1;
    else if (!NILP (pos))
      posint = fix_position (pos);
-  else if (w == XWINDOW (selected_window))
+  else if (w == XWINDOW (selected_window)
+	   && XBUFFER (w->contents) == current_buffer)
      posint = PT;
    else
      posint = marker_position (w->pointm);

martin