GNU bug report logs - #58992
28.2; "lax space matching" no longer works

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Vincent Lefevre <vincent <at> vinc17.net>
Cc: 58992 <at> debbugs.gnu.org
Subject: bug#58992: 28.2; "lax space matching" no longer works
Date: Thu, 03 Nov 2022 21:22:12 +0200

> Date: Thu, 3 Nov 2022 19:52:07 +0100
> From: Vincent Lefevre <vincent <at> vinc17.net>
> Cc: 58992 <at> debbugs.gnu.org
> 
> > Yes.  But in programming modes the newline didn't match.
> 
> Any reason why (perhaps except for shell modes)?

Because the newline's syntax is not "whitespace" in those modes.

> In C, except for the preprocessor, a newline is similar to a space
> character.

The syntax we give to each character in a major mode depends on what
the mode needs to do with that character.  For example, a mode might
have a good reason to give the newline the '>' syntax, because the
newline ends a comment in those modes.

> BTW, it actually doesn't match either for the Texinfo mode, and
> I don't see any reason why.

In which version of Emacs, and with what value of
search-whitespace-regexp?

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