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

[Eli Zaretskii]

> Date: Fri, 4 Nov 2022 16:00:02 +0100
> From: Vincent Lefevre <vincent@vinc17.net>
> Cc: Robert Pluim <rpluim@gmail.com>, 58992@debbugs.gnu.org
> 
> IMHO, Section "Syntax of Regular Expressions" (for both Emacs and Elisp)
> should warn that the meaning of a regular expression may depend on the
> major mode.

Already done.  Did you look at the latest version in Git?

> Moreover, the [[:space:]\n]+ suggestion for search-whitespace-regexp
> should be changed to something that does not use [:space:]

Done.