bug#32607: 27.0.50; pop-to-buffer in next-error-no-select

[Juri Linkov]

>>>> But it fails when using C-o from the already displayed *grep*.
>>>> I think next-error-no-select should override the user setting with
>>>> display-buffer-overriding-action because the purpose of pop-to-buffer in
>>>> next-error-no-select is to ensure the *grep* buffer is displayed somewhere:
>>>
>>> And if a user wanted to pop up a new window here?
>>
>> It pops up according to user setting but only when
>> this buffer is not displayed already in other window.
>
> Still: IMHO it's not the task of the calling function to fix a bad
> user customization.

What is bad in user customization?  It's normal customization
that corresponds to the old way of using same-window-regexps.
It's not responsibility of user customization to workaround
deficiencies in core functions.  The task of next-error-no-select
is to check if the buffer is already displayed, not to pop up
a new buffer.  There is no such problem in other commands that
use pop-to-buffer.