From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Drew Adams Newsgroups: gmane.emacs.help Subject: RE: Calling C-r with Prefix Argument Date: Wed, 14 Oct 2020 11:34:18 -0700 (PDT) Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="891"; mail-complaints-to="usenet@ciao.gmane.io" To: Christopher Dimech , Help Gnu Emacs Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Wed Oct 14 20:35:09 2020 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kSlcD-00004w-Ha for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 14 Oct 2020 20:35:09 +0200 Original-Received: from localhost ([::1]:39664 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kSlcC-0006lt-J4 for geh-help-gnu-emacs@m.gmane-mx.org; 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envelope-from=drew.adams@oracle.com; helo=aserp2120.oracle.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/14 12:41:08 X-ACL-Warn: Detected OS = Linux 3.1-3.10 [fuzzy] X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:124460 Archived-At: > Have been reading the output of describe-key for C-r (isearch- > backward) > that does an incremental search backward. > It states that with a prefix argument, it does a regular expression > search instead. >=20 > Tried to see the documentation for Prefix Argument but has not > helped > me for the command C-r. >=20 > How does a Prefix Argument work with C-r and what happens? +1 for starting to read the documentation. `C-u C-r' does a regexp incremental search backward. (`C-M-r' does the same thing.)