From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Drew Adams Newsgroups: gmane.emacs.bugs Subject: bug#52023: [External] : Re: bug#52023: 27.2; Enhancement: `this-command-invocation-(buffer|window)' Date: Mon, 22 Nov 2021 20:00:23 +0000 Message-ID: References: <867dd1mhn7.fsf@mail.linkov.net> <86pmqstxxs.fsf@mail.linkov.net> <864k846q2q.fsf@mail.linkov.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="30656"; mail-complaints-to="usenet@ciao.gmane.io" Cc: "52023@debbugs.gnu.org" <52023@debbugs.gnu.org> To: Juri Linkov Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Nov 22 21:01:30 2021 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 1mpFVJ-0007pg-PR for geb-bug-gnu-emacs@m.gmane-mx.org; 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b=QnIBCNc1O3cgc7OyIGCEz41VsF4Q+whtElEtXbzy+bgEok5aorlescRcfH9Qp9V2tCUWWyLkoG75nIp+CzVb0OeUEFP9i31askx0bPrwlaAnbU/N9HDuFm2B9CLbBN1TtDV3nYYRFUYOYPN6wv+mIaEMUJchUpkd+rb/vWOMnBU= Original-Received: from SJ0PR10MB5488.namprd10.prod.outlook.com (2603:10b6:a03:37e::19) by BYAPR10MB2967.namprd10.prod.outlook.com (2603:10b6:a03:87::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4713.22; Mon, 22 Nov 2021 20:00:23 +0000 Original-Received: from SJ0PR10MB5488.namprd10.prod.outlook.com ([fe80::4588:646c:e330:8bc0]) by SJ0PR10MB5488.namprd10.prod.outlook.com ([fe80::4588:646c:e330:8bc0%7]) with mapi id 15.20.4713.025; Mon, 22 Nov 2021 20:00:23 +0000 Thread-Topic: [External] : Re: bug#52023: 27.2; Enhancement: `this-command-invocation-(buffer|window)' Thread-Index: AdffAzdpdFicVjexQuGCOoXgRRGuIwAxgk9vAARFzuA= In-Reply-To: <864k846q2q.fsf@mail.linkov.net> Accept-Language: en-US Content-Language: en-US x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: ef2e5220-8efe-44ca-c341-08d9adf2b854 x-ms-traffictypediagnostic: BYAPR10MB2967: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:9508; 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PTR:; CAT:NONE; SFS:(366004)(71200400001)(186003)(122000001)(64756008)(66946007)(66446008)(66476007)(7696005)(6506007)(76116006)(6916009)(66556008)(38070700005)(26005)(33656002)(44832011)(9686003)(86362001)(4326008)(55016002)(38100700002)(8676002)(2906002)(508600001)(5660300002)(8936002)(316002)(52536014)(83380400001)(81973001); DIR:OUT; SFP:1101; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: 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 W+XbteZEkklT1nF4pN4/dDdcRnv7SGxiaB7Tc+r8Tok6A0vdGe1qRwlMnUBNs3vCGkyml4QWtHccHreLj+5ZxQGjZGx6ghdZP7 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: ef2e5220-8efe-44ca-c341-08d9adf2b854 X-MS-Exchange-CrossTenant-originalarrivaltime: 22 Nov 2021 20:00:23.5152 (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: 4o+/+ScCo6B2JQRNGZdejxTnhxI+3FPxopd38YBzk5FFKJHrePgsXg2Cy2AjwnXGIpOPbCjrELKtGwb8M4cfWw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR10MB2967 X-Proofpoint-Virus-Version: vendor=nai engine=6300 definitions=10176 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 adultscore=0 spamscore=0 bulkscore=0 suspectscore=0 mlxscore=0 mlxlogscore=999 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2111220099 X-Proofpoint-GUID: Dj77HeV3eaC65ai0thB01HUfrkWJAfbj X-Proofpoint-ORIG-GUID: Dj77HeV3eaC65ai0thB01HUfrkWJAfbj 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:220635 Archived-At: > >> But in any case you can use `pre-command-hook' to store > >> the original buffer and window. > > > > Please the bug report. It includes this: >=20 > A verb is missing. I assume you meant: "Please close the bug report"? It should have said "please read". No, the report should not be closed. > > Currently, to get this information a workaround > > would be to use a `pre-command-hook' function > > that sets variables, and then to test those variables. >=20 > Indeed, `pre-command-hook' could be used to set these variables, > and other possible variables. There are much worse problems > while using window-configuration-change-hook. When this hook is fired, > it doesn't provide the previous window-configuration as its argument, > thus requiring remembering the old window-configuration in `pre-command- > hook'. > > So every `pre-command-hook' calls `current-window-configuration' > that is huge performance overhead. This is worse than remembering > a variable in `pre-command-hook', and still no one complains about this. Please consider filing a bug / enhancement request for that (other) problem. `pre-command-hook' (and `post-') are overused. One reason, I think, is that sometimes there's no other way to do something easily. They can be kind of a mess, and yes, they can affect performance and other behavior. I'd like to see this particular enhancement added, as I think such functions would be useful generally. I'd like to avoid yet another use of the `pre-' and `post-' hooks just to obtain some simple state info. There are lots of things that no one complains about but that it would be good to fix.