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Re: Point of wrong window used in read-from-minibuffer?

From: Stefan Monnier
Subject: Re: Point of wrong window used in read-from-minibuffer?
Date: Tue, 12 Apr 2005 08:27:17 -0400
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (darwin)

> the patch fixes the "reduced" error, but not the original problem. 

Can you try the patch below instead?
It seems to fix it for me *and* it explains why font-lock-mode is
a necessary ingredient.


--- window.c    02 mar 2005 22:20:12 -0500      1.496
+++ window.c    12 avr 2005 08:17:51 -0400      
@@ -5589,6 +5591,17 @@
       if (XBUFFER (new_current_buffer) == current_buffer)
        old_point = PT;
+      else
+       /* BUF_PT (XBUFFER (new_current_buffer)) gives us the position of
+          point in new_current_buffer as of the last time this buffer was
+          used.  This can be non-deterministic since it can be changed by
+          things like jit-lock by mere temporary selection of some random
+          window that happens to show this buffer.
+          So if possible we want this arbitrary choice of "which point" to
+          be the one from the to-be-selected-window so as to prevent this
+          window's cursor from being copied from another window.  */
+       if (EQ (XWINDOW (data->current_window)->buffer, new_current_buffer))
+         old_point = XMARKER (XWINDOW (data->current_window)->pointm)->charpos;
        old_point = BUF_PT (XBUFFER (new_current_buffer));

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