looking-back

Andreas Röhler <[email protected]> Sat, 1 Aug 2026 14:54:39 +0200
Newsgroups gmane.emacs.help
Message-ID <[email protected]>
Hi,


want to match an opening paren followed by a whitespace. Tried the forms=
=20
below without success.
Any suggestion?

( (looking-back "\\\\( +" (line-beginning-position) t)=C2=A0 =3D=3D> nil
( (looking-back (regexp-quote (rx "(" (+ space)))=20
(line-beginning-position) t) =3D=3D> nil

GNU Emacs 31.0.91 (build 3, x86_64-pc-linux-gnu, GTK+ Version 3.24.50,=20
cairo version 1.18.4) of 2026-07-30