Re: Let temporary minibuffer messages replace current minibuffer contents?

> Date: Thu, 16 Apr 2026 12:34:36 +0200
> From: Frank Steiner <[email protected]>
> 
> as I like to restrict the minibuffer to one line max height
> the current mechanism of adding temporary messages at EOB
> is not working well in some cases. E.g. when the "Find file:"
> shows already a longer path and then you press some wrong
> key, the "Command attempted to use minibuffer while in minibuffer"
> is almost invisible as it wraps to the next line (that I forced
> to be hidden).
> 
> xemacs is showing such temporary message instead of the current
> minibuffer, i.e., completely replacing it for the given timeout.
> then restoring the previous content.
> 
> I wonder if it is possible to reach the same for emacs. After
> looking through minibuffer.el I couldn't find a way. Redefining
> minibuffer--message-overlay-pos to return 0 didn't help as the
> prompt will stay at the EOB.
> 
> I could just think of advising minibuffer-message to save
> and clear the minibuffer and restore it after the timeout,
> but I wonder if there an easier way to reach that?

Yes, you can write your own function instead of the default
set-minibuffer-message.  That function is called via the hook called
set-message-functions, which see.