bug#37496: 27.0.50; C-s failing to search

[Eli Zaretskii <eliz@gnu.org>]

> Date: Thu, 26 Sep 2019 09:50:54 +0200
> From: Jean Louis <bugs@gnu.support>
> Cc: 37496@debbugs.gnu.org
> 
> > Could be related to isearch-filter-predicate set up by wdired.el,
> > perhaps?
> 
> That I cannot know, I would solve it if I would know it.

You could edebug-defun in wdired-isearch-filter-read-only, and see if
it gets invoked when you type C-s, and if so, whether it somehow
thinks every search hit is to be skipped.  Can you do that?

> > My first suggestion is to stop using Wdired for a while, and see if
> > the problem never happens then.
> 
> I am always using Emacs and I never got this problem before, I would
> otherwise report it, right? No need to stop using Wdired to find out
> if it happens, as that has been determined that it does not happen by
> my previous historical usage of Emacs.

I'm not convinced, because there could be other factors at work here.

You asked for help in getting this problem tracked down, and I'm
asking you to help that process by stopping to use Wdired for a
while.  I have no other ideas for how to debug this, so if you are
unwilling to try what I'm asking, I don't know how to make any
progress here.

> I cannot say what invokes it, I just know that I am using a lot C-x
> C-q and C-c C-c and also "q" to exit Dired buffer and a lot of "^" to
> go to upper directory. And just by my changed usage of Emacs in last
> few days where I am editing a lot of file names and directories, I can
> estimate that it relates to Wdired or Dired. And I do a lot of
> searches one after the other.

Yes, I understand.  But there's not enough data here to give a clue of
the potential reasons.

Thanks.