bug#71927: 29.4; ibuffer-do-isearch and ibuffer-do-isearch-regexp not prompting for input

[Stephen Berman via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

On Thu, 04 Jul 2024 21:07:36 +0300 Eli Zaretskii <eliz@gnu.org> wrote:

>> From: Stephen Berman <stephen.berman@gmx.net>
>> Cc: Eli Zaretskii <eliz@gnu.org>,  Eshel Yaron <me@eshelyaron.com>,
>>   kickingvegas@gmail.com,  71927@debbugs.gnu.org,  basil@contovou.net,
>>   jpw@gnu.org
>> Date: Thu, 04 Jul 2024 19:36:34 +0200
>>
>> On Thu, 04 Jul 2024 19:04:42 +0300 Juri Linkov <juri@linkov.net> wrote:
>>
>> >>>> FWIW, AFAICT everything is working correctly, it's just that the
>> >>>> "Operation finished" message hides the prompt.  ibuffer-do-isearch
>> >>>> should tell define-ibuffer-op not to display that message, somehow.
>> >>>
>> >>> I don't see how this could be considered "correct": the "Operation
>> >>> finished" message is supposed to be shown only after the Isearch is
>> >>> finished in all the marked buffer, not before.  It looks like we need
>> >>> a function that will not return until all the buffers where searched,
>> >>> because that's what define-ibuffer-op expects.  Don't you agree?
>> >
>> > It intentionally uses 'no-recursive-edit' set to t, so ibuffer-do-isearch
>> > correctly exits immediately while leaving isearch-mode enabled.
>> >
>> >> The attached patch appears to DTRT, but I only tested it briefly.
>> >> ...
>> >>  (define-ibuffer-op ibuffer-do-isearch ()
>> >>    "Perform a `isearch-forward' in marked buffers."
>> >>    (:interactive ()
>> >> -   :opstring "searched in"
>> >> +   :no-opstring t
>> >
>> > Thanks for the patch.  I confirm this is the right thing to do.
>> > Maybe instead of :no-opstring would be better to use some special value
>> > like :opstring 'no?  But I'm not sure if this is better than :no-opstring.
>>
>> Suppressing the message when :opstring has the value 'no is fine with
>> me.  If Eli is willing to accept this approach, I can go ahead and
>> commit it (to master, presumably, since this is a longstanding issue).
>
> I already said this didn't sound the right solution here, and I
> explained why.  I'd be interested in hearing counter-arguments, if
> there are any.

I gave a mild counterargument upthread, that making
ibuffer-do-isearch{-regexp} defuns independent of define-ibuffer-op
seems like accepting the inadequacy of the latter instead of trying to
improve it.  Also, I am not familiar enough with the ibuffer code to be
confident that I could implement I could implement the functionality
without using this macro, but someone else might be in a better position
to do that.

Steve Berman