From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail
From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.help
Subject: Re: formatting buffer with external tool
Date: Tue, 12 Apr 2022 14:53:18 +0300
Message-ID: <83y20a4ixd.fsf@gnu.org>
References: <CAKoxK+6abZdRidMGbz+_0n66fgnHDtdv8Cv+SxVPGez8GL0hQQ@mail.gmail.com>
Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214";
	logging-data="15763"; mail-complaints-to="usenet@ciao.gmane.io"
To: help-gnu-emacs@gnu.org
Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Tue Apr 12 13:53:43 2022
Return-path: <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org>
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 <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org>)
	id 1neF5b-0003zc-OD
	for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 12 Apr 2022 13:53:43 +0200
Original-Received: from localhost ([::1]:33158 helo=lists1p.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.90_1)
	(envelope-from <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org>)
	id 1neF5a-0004Jk-OT
	for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 12 Apr 2022 07:53:42 -0400
Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:35324)
 by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <eliz@gnu.org>) id 1neF59-0004JD-7v
 for help-gnu-emacs@gnu.org; Tue, 12 Apr 2022 07:53:16 -0400
Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:34824)
 by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <eliz@gnu.org>) id 1neF58-0005h0-SK
 for help-gnu-emacs@gnu.org; Tue, 12 Apr 2022 07:53:14 -0400
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org;
 s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date:
 mime-version; bh=UmASFHtwAeHo9dypmwj9LuIg62/EeZpNF74k9HUKfc8=; b=ChOogLlu7V8S
 V2K55xL/dwJmeaP1Z+8c0sJ8hjIqgELXiwDAcb22t1Hv0tmK3//g5DRDvRq0ki23RkjjEwjU5hGUd
 jJb05wpSc2gNaqsnxTuNuIemQ5vsYtnOLhiUCQeSnWLsDyn7Ac1PCg/NoA2HiKQaY43QhmDvCj3oH
 4yAp6aMePQXLWPi+EBkGagn09lUSWgYpv1o8AFBPGzPBAHdEIzdjBY+obolHz0U9w1+pb5ppMM+sv
 0XgA1NkSADt7/IIwswga9dPdmMvCuPxVRtkCH6Ag7l97s4uOhfBtlGSoCBwuwftrQzLN1i1na9OXw
 Tn602WF01pl8rcGN2WDDJQ==;
Original-Received: from [87.69.77.57] (port=1541 helo=home-c4e4a596f7)
 by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <eliz@gnu.org>) id 1neF58-0001pv-AV
 for help-gnu-emacs@gnu.org; Tue, 12 Apr 2022 07:53:14 -0400
In-Reply-To: <CAKoxK+6abZdRidMGbz+_0n66fgnHDtdv8Cv+SxVPGez8GL0hQQ@mail.gmail.com>
 (message from Luca Ferrari on Tue, 12 Apr 2022 13:45:03 +0200)
X-BeenThere: help-gnu-emacs@gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Users list for the GNU Emacs text editor <help-gnu-emacs.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/help-gnu-emacs>,
 <mailto:help-gnu-emacs-request@gnu.org?subject=unsubscribe>
List-Archive: <https://lists.gnu.org/archive/html/help-gnu-emacs>
List-Post: <mailto:help-gnu-emacs@gnu.org>
List-Help: <mailto:help-gnu-emacs-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/help-gnu-emacs>,
 <mailto:help-gnu-emacs-request@gnu.org?subject=subscribe>
Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org
Original-Sender: "help-gnu-emacs"
 <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org>
Xref: news.gmane.io gmane.emacs.help:136904
Archived-At: <http://permalink.gmane.org/gmane.emacs.help/136904>

> From: Luca Ferrari <fluca1978@gmail.com>
> Date: Tue, 12 Apr 2022 13:45:03 +0200
> 
> Hi all,
> how can I define a command so that instead of calling indent-region I
> pass the region content to an external program and get back the result
> into the region?

Use shell-command-on-region with 4th arg not a buffer and not nil.