From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Vibhav Pant Newsgroups: gmane.emacs.devel Subject: Carriage return and process-send-string Date: Thu, 8 Dec 2016 13:27:18 +0530 Message-ID: NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: blaine.gmane.org 1481183967 15695 195.159.176.226 (8 Dec 2016 07:59:27 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 8 Dec 2016 07:59:27 +0000 (UTC) To: "emacs-devel@gnu.org" Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Dec 08 08:59:21 2016 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cEtbp-0002f2-Nr for ged-emacs-devel@m.gmane.org; Thu, 08 Dec 2016 08:59:18 +0100 Original-Received: from localhost ([::1]:44559 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cEtbt-0001Xg-5E for ged-emacs-devel@m.gmane.org; Thu, 08 Dec 2016 02:59:21 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:39168) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cEtbI-0001Xb-2v for emacs-devel@gnu.org; Thu, 08 Dec 2016 02:58:45 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cEtbF-00068N-2X for emacs-devel@gnu.org; Thu, 08 Dec 2016 02:58:44 -0500 Original-Received: from mail-io0-f170.google.com ([209.85.223.170]:33658) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cEtbE-0005WW-S7 for emacs-devel@gnu.org; Thu, 08 Dec 2016 02:58:41 -0500 Original-Received: by mail-io0-f170.google.com with SMTP id j65so14895776iof.0 for ; Wed, 07 Dec 2016 23:58:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:from:date:message-id:subject:to; bh=cyghDNAlYPgYkeo8QhhzZLyI51RHzL8dBXhCB+MNo8g=; b=fnk/1youuDNUeMQHpLn8GUpis27SkqeDTfD2djQe+9xa5IPfV5rw0rP6dnsxB/JUo7 4C3Oxoi4bwqINvE94An2fEHlOSYThS9wiRgDE3qU6jvLrz4MnmkMYssPDoddld4AnVmO z02EExWU5FQN3fdO0SgGcGEqnCIS+oAkYJpPAJowfIf6SN3miMRaAORPxKMLwfePRVH3 BvJ5YKu2mo6Qomk0FLoX6gCMEnB951H+UY8I5kknsiCN0sdSubpJFyDaYMSev2VZ2Xhf DmRKQNe9FqxEJdfyhn/ybNPHyvdaKzoJHHnjzGt4A1nw2fXCa/FaSuAu8se4H4YL/TQs W+/A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=cyghDNAlYPgYkeo8QhhzZLyI51RHzL8dBXhCB+MNo8g=; b=Od5f7XDdGFfFtF2seyFD0AuElx/G9W7mMxzMbvMzAtf79zxoDPXuoQVesLzGIIsRG2 PG+EtLBHTHeRphgbHekSg1qiNeeWEtFYGQL4ksva0wosraGpxQIOfGqXKjTbiwDgehh6 Tk7zGxV0Ed7CfqPshbxF2RqMV3kgS9gPORhqJ0hCgK6q/ewis0UKHsNc34MEmI8fUsZe KihejsdVD7eCbQGaLv4t4JsBIYyUDnSC+WxgEC22dLG9CHk5BmxBIhvEfE9RklsOsv7e xDuLUe1jYLvT5zSnRbd8g8OLtrkLPijBslKK7mZSjPNqLVX3hVHR0FqfwwMrAqVGUStX fKsQ== X-Gm-Message-State: AKaTC03A9ipHZRGZhf/V3bjMDMIoINQXyd5IJztQqO1qAybHZbHZf5YujHasiEETt6bViUE7KAZafZCyXXD7eA== X-Received: by 10.36.87.203 with SMTP id u194mr660851ita.100.1481183838448; Wed, 07 Dec 2016 23:57:18 -0800 (PST) Original-Received: by 10.79.30.197 with HTTP; Wed, 7 Dec 2016 23:57:18 -0800 (PST) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.85.223.170 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:210126 Archived-At: While working on a library for the Language Server Protocol[1] (which uses \r\n to separate headers), I found out that `process-send-string` will convert carriage returns in the provided string to newlines. As an example, strace shows that (process-send-string proc (format "Content-Length: 0\r\n\r\n") ends up sending read(0, "Content-Length: 0\n", 8192) = 17 read(0, "\n", 8192) = 1 read(0, "\n", 8192) = 1 read(0, "\n", 8192) = 1 to the process. I tried setting `:coding-system` in `make-process` to `'no-conversion`, but this didn't fix the issue. Is this intended behavior? If so, are there any ways to go around it? Thanks, Vibhav [1] Language Server Protocol: https://github.com/Microsoft/language-server-protocol -- Vibhav Pant vibhavp@gmail.com