Subject: bug#23124: Two minibuffer resize related bugs

From: martin rudalics <[email-masked]>
Date: Sun, 27 Mar 2016 22:51:56 +0200

> Let's start with a much simpler reproducer:
 >
 >    . emacs -Q
 >    . Type "C-x" and wait until you see "C-x-" in the echo area
 >    . Type "5 2"
 >
 > Result: a new frame is displayed, with both frames showing the
 > "C-x 5 2" echo, which already sounds like a bug (only one frame should
 > show it).
 >
 > Now type "C-p" -- only one of the two echo messages will disappear,
 > the one in the non-selected window stays put.
 >
 > This didn't happen in Emacs 24.5, where the "C-x 5 2" echo is first
 > cleared, and then redisplayed after the new frame is created.

So far it's just queer but after returning to the first frame and typing
C-p there repeatedly, "C-x 5 2" remains fixed in that frame's echo area.

 > According to my testing, this problem appeared between Aug 31 and Sep
 > 30 last year.

I love bisecting.  Especially when copyright lines change.

My recipe can be obviously simplified as well:

. emacs -Q to get the first frame
. Type C-x 5 2 to get the second frame
. Evaluate (message "x\ny") in the first frame
. Type C-p in the second frame

martin