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

[Eli Zaretskii]

> Date: Thu, 26 Sep 2019 09:22:13 +0200
> From: Jean Louis <bugs@gnu.support>
> Cc: 37496@debbugs.gnu.org
> 
> I invoke C-s, and there is minibuffer, I am entering any term and no
> term can be found in any of the buffers.

Even if you create a new buffer with "C-x b", type some text into it,
and then try to search for that text in that buffer?

> What I can say is that I am doing a lot of editing with Wdired and
> that before, when I was not doing much with Wdired, I have never seen
> this taking place.

Could be related to isearch-filter-predicate set up by wdired.el,
perhaps?

My first suggestion is to stop using Wdired for a while, and see if
the problem never happens then.