bug#58992: 28.2; "lax space matching" no longer works

[Eli Zaretskii]

> Date: Thu, 3 Nov 2022 18:34:18 +0100
> From: Vincent Lefevre <vincent@vinc17.net>
> Cc: 58992@debbugs.gnu.org
> 
> > I tested with "emacs -Q", and I've just tested again. I confirm the
> > behavior I could see: a newline character is matched. That's Debian's
> > package emacs-gtk 1:27.1+1-3.1+b1. So perhaps Debian has changed the
> > default (but no changes were announced in Debian for Emacs 28, whose
> > behavior is different).
> 
> In the officiel lisp/isearch.el file from the Debian/stable package
> (i.e. *not* in the debian subdirectory):
> 
> (defcustom search-whitespace-regexp (purecopy "\\s-+")
> 
> So it doesn't seem to be a Debian customization.

OK, thanks for solving this mystery.