Eli Zaretskii <eliz@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Received: (at 63588) by debbugs.gnu.org; 19 May 2023 16:07:04 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri May 19 12:07:04 2023 Received: from localhost ([127.0.0.1]:57239 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q02dE-0002ES-73 for submit <at> debbugs.gnu.org; Fri, 19 May 2023 12:07:04 -0400 Received: from eggs.gnu.org ([209.51.188.92]:60456) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q02dB-0002Dn-Rf; Fri, 19 May 2023 12:07:02 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q02d5-0004y7-TR; Fri, 19 May 2023 12:06:55 -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=OkFZR7pqQdfESD2fukN6j4n6eHcR0lrNr81PsLTibhg=; b=hc+vp0uhhvBH 5IUQ0FFoNuUT+H0mFf6GGXL9ooxQzgMINhjPd4onu3lwp/TGt8RdEeqSPp1rcGTfzpKIQfzusryIk oTjRCrtCxcbUy+9Gwsactj7fAyZGqpgqNJnYoFxro4Upmc6m76sJ/xzLUXofR0YLKmop30vqS0WOD pD38EQaEU+9tgdlaEMT6kv+jC987fUuOVZB3sH8VMwNIne/cW4/e+pao0jm9mYf47msh9QJ85l0Nt 5EBHFLUbX6iopNGxEl8TF1IMcky0tCLyL8upX6QJSgRmIiJhX9k4F7nmpy1dZDmGGtVjZoZq28NYK e2uaaYgC6ZXF9t1uJk7cGQ==; Received: from [87.69.77.57] (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@HIDDEN>) id 1q02d5-00043T-Cs; Fri, 19 May 2023 12:06:55 -0400 Date: Fri, 19 May 2023 19:07:10 +0300 Message-Id: <83cz2wtidt.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: balducci@HIDDEN In-Reply-To: <30876.1684486510@HIDDEN> (balducci@HIDDEN) Subject: Re: bug#63588: 29.x: dotimes (possible) problem References: <30876.1684486510@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63588 Cc: 63588 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) merge 63588 63586 thanks > From: balducci@HIDDEN > Date: Fri, 19 May 2023 10:54:46 +0200 > > hello > > the dotimes macro behaves differently in 29.x with respect to previous > versions This is an exact duplicate of bug#63586 which you submitted recently.
bug-gnu-emacs@HIDDEN:bug#63588; Package emacs.
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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: SJ0PR10MB5488.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: fdd1d040-611f-4403-0703-08db587fab83 X-MS-Exchange-CrossTenant-originalarrivaltime: 19 May 2023 15:42:36.4169 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: 8kIavweIR3qSTgVZWjzFm2BbgSiNDMHsySqyCUEf5VimTt/swKgvhQMA7OKV5N6PTRuFKmzTXnYiyGPcPobWjA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR10MB6466 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-05-19_11,2023-05-17_02,2023-02-09_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 adultscore=0 malwarescore=0 bulkscore=0 spamscore=0 phishscore=0 mlxlogscore=999 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2304280000 definitions=main-2305190133 X-Proofpoint-ORIG-GUID: GSoTxB_t9hGmJ7Qf0tT7BnTpksz9G3ZA X-Proofpoint-GUID: GSoTxB_t9hGmJ7Qf0tT7BnTpksz9G3ZA X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: 63588 X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) > changing the value of the loop variable in the body of > dotimes does not seem to have any effect, where for versions <29.x it > used to. ... > The ability to jump out of the loop by pushing the loop variable over > the upper limit is something that I happen to use in my scripts, so > 29.x breaks them somehow >=20 > Of course, there are very many other equivalent ways to > accomplish the same result, but I don't see why this one > shouldn't be supported (any longer) >=20 > Is the changed behavior intentional? Am I missing some blatant point here= ? >=20 > AFAICS, changing the value of the loop variable from inside the loop > body is supported by any other language which I know about No, it's not. From CLTL2 [*]: "Altering the value of var in the body of the loop (by using setq, for example) will have unpredictable, possibly implementation-dependent results. A Common Lisp compiler may choose to issue a warning if such a variable appears in a setq." That allows an implementation of CL to define some particular behavior in this regard. But it also says that if it does, and if your CL code depends on that behavior, then it won't necessarily be portable to other CL implementations. It's unfortunate that if this Elisp change isn't backward compatible. That's indeed a consideration. But it's wise for your code not to depend on being able to change the loop variable and get any meaningful resulting behavior. Both in CL and Elisp `dotimes' lets you use RETURN to break out of the loop. That should speak to one of your use cases, at least. (dotimes (ii 100 "*********") (when (=3D 4 ii) (return "4444444444"))) CLTL2 says this: "An explicit return statement may be used to terminate the loop and return a specified value." But I don't see where this is documented for Elisp. Maybe it is documented somewhere. Should be. ___ [*] https://www.cs.cmu.edu/Groups/AI/html/cltl/clm/node89.html
bug-gnu-emacs@HIDDEN:bug#63588; Package emacs.
Full text available.Received: (at submit) by debbugs.gnu.org; 19 May 2023 15:21:34 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri May 19 11:21:34 2023 Received: from localhost ([127.0.0.1]:57130 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q01vB-0000kE-9E for submit <at> debbugs.gnu.org; Fri, 19 May 2023 11:21:34 -0400 Received: from lists.gnu.org ([209.51.188.17]:35344) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <balducci@HIDDEN>) id 1pzvtL-00076W-6e for submit <at> debbugs.gnu.org; Fri, 19 May 2023 04:55:18 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <balducci@HIDDEN>) id 1pzvtK-0001YE-SJ for bug-gnu-emacs@HIDDEN; Fri, 19 May 2023 04:55:14 -0400 Received: from dschgrazlin2.univ.trieste.it ([140.105.55.81] helo=dschgrazlin2.units.it) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from <balducci@HIDDEN>) id 1pzvtI-00086T-ON for bug-gnu-emacs@HIDDEN; Fri, 19 May 2023 04:55:14 -0400 Received: from dschgrazlin2.units.it (loopback [127.0.0.1]) by dschgrazlin2.units.it (8.17.1/8.17.1) with ESMTP id 34J8skuw030877 for <bug-gnu-emacs@HIDDEN>; Fri, 19 May 2023 10:54:46 +0200 To: bug-gnu-emacs@HIDDEN From: balducci@HIDDEN Subject: 29.x: dotimes (possible) problem X-Mailer: MH-E 8.6+git; nmh 1.8; Emacs 29.0.91 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <30875.1684486510.1@HIDDEN> Date: Fri, 19 May 2023 10:54:46 +0200 Message-ID: <30876.1684486510@HIDDEN> X-Greylist: inspected by milter-greylist-4.6.4 (dschgrazlin2.units.it [0.0.0.0]); Fri, 19 May 2023 10:54:46 +0200 (CEST) for IP:'127.0.0.1' DOMAIN:'loopback' HELO:'dschgrazlin2.units.it' FROM:'balducci@HIDDEN' RCPT:'' X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.6.4 (dschgrazlin2.units.it [0.0.0.0]); Fri, 19 May 2023 10:54:46 +0200 (CEST) Received-SPF: none client-ip=140.105.55.81; envelope-from=balducci@HIDDEN; helo=dschgrazlin2.units.it X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, KHOP_HELO_FCRDNS=0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: submit X-Mailman-Approved-At: Fri, 19 May 2023 11:21:30 -0400 X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) hello the dotimes macro behaves differently in 29.x with respect to previous versions Basically: changing the value of the loop variable in the body of dotimes does not seem to have any effect, where for versions <29.x it used to. Here is a minimal stretch of dummy code clarifying the problem I'm reporting. emacs-29.0.91 (or 29.0.90) ========================== (dotimes (ii 10) (insert (format "%2d " ii)) (when (= ii 4)(setq ii 11)) ) ==> 0 1 2 3 4 5 6 7 8 9 emacs-28.2 (or any version <29.x) ================================= (dotimes (ii 10) (insert (format "%2d " ii)) (when (= ii 4)(setq ii 11)) ) ==> 0 1 2 3 4 The ability to jump out of the loop by pushing the loop variable over the upper limit is something that I happen to use in my scripts, so 29.x breaks them somehow Of course, there are very many other equivalent ways to accomplish the same result, but I don't see why this one shouldn't be supported (any longer) Is the changed behavior intentional? Am I missing some blatant point here? AFAICS, changing the value of the loop variable from inside the loop body is supported by any other language which I know about thank you very much in advance for any hint/feedback ciao -gabriele
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Full text available.bug-gnu-emacs@HIDDEN:bug#63588; Package emacs.
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