From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#43597: 28.0.50; arc-mode.el fails to display a ZIP file Date: Fri, 25 Sep 2020 09:01:02 +0300 Message-ID: <83a6xetmxt.fsf@gnu.org> References: <874knnvt79.fsf@gmx.net> <87y2ky7wi4.fsf@igel.home> <87zh5evrgw.fsf@gmx.net> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="28597"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 43597@debbugs.gnu.org, schwab@linux-m68k.org To: Stephen Berman Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Sep 25 08:02:12 2020 Return-path: Envelope-to: geb-bug-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 1kLgo8-0007LU-Gg for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 25 Sep 2020 08:02:12 +0200 Original-Received: from localhost ([::1]:50174 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kLgo7-0003nB-JQ for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 25 Sep 2020 02:02:11 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:45276) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kLgnz-0003ln-8G for bug-gnu-emacs@gnu.org; Fri, 25 Sep 2020 02:02:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:59052) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kLgny-0002PU-3C for bug-gnu-emacs@gnu.org; Fri, 25 Sep 2020 02:02:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1kLgnx-0001fS-Vr for bug-gnu-emacs@gnu.org; Fri, 25 Sep 2020 02:02:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 25 Sep 2020 06:02:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 43597 X-GNU-PR-Package: emacs Original-Received: via spool by 43597-submit@debbugs.gnu.org id=B43597.16010136626346 (code B ref 43597); Fri, 25 Sep 2020 06:02:01 +0000 Original-Received: (at 43597) by debbugs.gnu.org; 25 Sep 2020 06:01:02 +0000 Original-Received: from localhost ([127.0.0.1]:42365 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kLgmz-0001eH-RP for submit@debbugs.gnu.org; Fri, 25 Sep 2020 02:01:02 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:38286) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kLgmy-0001dh-3m for 43597@debbugs.gnu.org; Fri, 25 Sep 2020 02:01:01 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:48246) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kLgmr-0002LB-5L; Fri, 25 Sep 2020 02:00:53 -0400 Original-Received: from [176.228.60.248] (port=3954 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1kLgmq-0007XG-JO; Fri, 25 Sep 2020 02:00:52 -0400 In-Reply-To: <87zh5evrgw.fsf@gmx.net> (message from Stephen Berman on Thu, 24 Sep 2020 22:40:15 +0200) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:188925 Archived-At: > From: Stephen Berman > Date: Thu, 24 Sep 2020 22:40:15 +0200 > Cc: 43597@debbugs.gnu.org > > (let ((p (archive-l-e (+ (point) 16) 4)) > files) > (when (= p -1) > ;; If the offset of end-of-central-directory is -1, this is a > ;; Zip64 extended ZIP file format, and we need to glean the info > ;; from Zip64 records instead. > > But the first value returned by archive-l-e for this file is 255, not > -1, and on each iteration the value increases, so the ZIP64 code in the > body of the when-clause is never executed. This code worked when support for ZIP64 was added. Could it be that the problem is in archive-l-e? Something related to bignums, perhaps? Why does it return 255 instead of -1 in this case?