bug#48409: Text runs away before user can copy it

[Eli Zaretskii]

> From: Juri Linkov <juri@linkov.net>
> Cc: Alan Mackenzie <acm@muc.de>,  48409@debbugs.gnu.org
> Date: Mon, 17 May 2021 23:53:12 +0300
> 
> Something strange is going on here:
> 
> 1. when the shell output displayed in the echo area is only 1 line:
> 
>   M-! echo -e "line1" RET
> 
> then clicking on the echo area displays the *Messages* buffer correctly.
> 
> 2. But when the output has more lines:
> 
>   M-! echo -e "line1\nline2" RET
> 
> then clicking on the echo area signals an error:
> 
>   mouse-minibuffer-check: Minibuffer window is not active

You don't need M-! for this, 'message' is enough:

  emacs -Q
  (message "line1\nline2") C-x C-e
  click mouse-1 in the mini-window

Alan, are you looking into this?  My guess is that this has something
to do with the fact the the echo-area buffer is displayed in the
mini-window, and the view-echo-area-messages binding is only active in
the minibuffer, not in an echo-area buffer.  But that's a guess.