Re: New multi-command facility displays in the wrong echo area.

[Gregory Heytings via "Emacs development discussions." <emacs-devel@gnu.org>]

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Hi Alan,

>>>> Yet another similar use case is when you type "C-x 8 RET" during 
>>>> Isearch: that reads the character's name/codepoint from the 
>>>> minibuffer.
>>>
>>> This goes wrong.  With C-x b active on frame F1, move to F2, start an 
>>> isearch, C-x 8 RET, use TAB completion to select a character and RET. 
>>> This displays
>>>
>>>    Switch to buffer (default xdisp.c):  [Failing I-search: su�]
>>>
>>> on F2.  On terminating the isearch and completing the C-x b action in 
>>> F2's minibufer, the buffer switch has worked in frame F1.
>>
>> It doesn't go wrong, it has moved the minibuffer from frame F1 to frame 
>> F2.
>
> The minibuffer's contents, the C-x b, is acting on F1.  It is surely 
> wrong to have moved the minibuffer to F2.
>

It can perhaps be argued that it is wrong, but it's a different problem, 
and this behavior exists since Emacs 24.

FWIW, I don't think it is wrong: the minibuffer has indeed moved to F2, 
but when you press RET after choosing the buffer you want, the buffer 
switch happens in F1.  And on a TTY, Emacs even goes back to F1.