From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.help Subject: Re: Replacement for string-as-unibyte-function Date: Mon, 01 Feb 2021 10:01:22 -0500 Message-ID: References: <20210131150133.0fd3b42f@gauss> <20210131215555.547fb92e@gauss> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="32684"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: help-gnu-emacs@gnu.org To: Joe Riel Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Mon Feb 01 16:06:03 2021 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 1l6amA-0008HB-NB for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 01 Feb 2021 16:06:02 +0100 Original-Received: from localhost ([::1]:60904 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l6am9-0007yx-OZ for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 01 Feb 2021 10:06:01 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:60402) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l6ahl-0003nQ-Aj for help-gnu-emacs@gnu.org; Mon, 01 Feb 2021 10:01:29 -0500 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:24043) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l6ahi-00031e-Mn for help-gnu-emacs@gnu.org; Mon, 01 Feb 2021 10:01:28 -0500 Original-Received: from pmg3.iro.umontreal.ca (localhost [127.0.0.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 4787744097A; Mon, 1 Feb 2021 10:01:25 -0500 (EST) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id D0042440921; Mon, 1 Feb 2021 10:01:23 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1612191683; bh=eoqZgcaeY9P6rPVf2K4NUm4xiGw5olidC2pwgX3CCeM=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=LIj9JPPjjA11A9KnP8xuwS9oE+jtZB/85oDE5A+SvkUCnn5My3e6EjB5b1XvYHf7f VeUtf7WuZUeroYN+sqwDYD7S00ABG9DyQZirb0zFGDDkKyZh7RfYLGaSy22A9jtnpr 6pFiNbyclRUaXVVd3Mpy+f1J1npVclHg8dHrE2vmX9C2LxW1vg71A9wGfNltXjBNB9 0tXDaLvOFt9j8MZRhXmXPEK2VhuWkBwLrXxgTy3IZCVlZAfz+l8AGRF5G1TEObGOA0 3r/Cap+SogdsJLG9HxOo+89EqPgkDPHFFQzeFBg6qEv+EbfcYjnKuPQ3cs9/6VG+KU jMiNGhbE0ExrA== Original-Received: from alfajor (69-196-141-46.dsl.teksavvy.com [69.196.141.46]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 886F512016F; Mon, 1 Feb 2021 10:01:23 -0500 (EST) In-Reply-To: <20210131215555.547fb92e@gauss> (Joe Riel's message of "Sun, 31 Jan 2021 21:55:55 -0800") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=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:127527 Archived-At: >> So make sure the buffer in which the process writes is unibyte with >> >> (set-buffer-multibyte nil) >> >> and make sure Emacs doesn't try to decode the process's output: >> >> (set-process-coding-system 'binary) >> >> (which you can also set directly when you launch the process, but how >> you do it depends on the function you use to create the process). > > I'm actually using make-network-process (to communicate via tls). Then use something like (make-network-process ... :coding 'binary ...) or (make-network-process ... :coding '(binary . utf-8) ...) > The filter function inserts the string into a buffer. Emacs receives the data from the process as a sequence of *bytes* (after all, that's the only thing available in POSIX communication). So in order to pass a sequence of *chars* (aka "a multibyte string") to the process filter, Emacs's internal C code has to do the equivalent of (*de*code-coding-string "thedatareceived" ') where is the coding system that `make-network-process` decided to use for that process. And then you come along and want to call `encode-coding-string` on the result: better use `:coding` as I suggested above in order to cut the middle man. Stefan