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.devel Subject: RE: [External] : Re: minor mode for highlighting character classes such as non-ascii (bug 47455) Date: Tue, 1 Jun 2021 16:49:21 +0000 Message-ID: References: <23925.69978.953904.24758@gargle.gargle.HOWL> <878s3tczpg.fsf@telefonica.net> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="29797"; mail-complaints-to="usenet@ciao.gmane.io" To: =?iso-8859-1?Q?=D3scar_Fuentes?= , "emacs-devel@gnu.org" Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Jun 01 18:50:16 2021 Return-path: Envelope-to: ged-emacs-devel@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 1lo7ap-0007Yb-Mc for ged-emacs-devel@m.gmane-mx.org; Tue, 01 Jun 2021 18:50:15 +0200 Original-Received: from localhost ([::1]:45950 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lo7ao-0000FY-Me for ged-emacs-devel@m.gmane-mx.org; Tue, 01 Jun 2021 12:50:14 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:45908) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lo7a5-0007d4-Kq for emacs-devel@gnu.org; Tue, 01 Jun 2021 12:49:29 -0400 Original-Received: from aserp2120.oracle.com ([141.146.126.78]:55270) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lo7a3-0000U8-8F for emacs-devel@gnu.org; Tue, 01 Jun 2021 12:49:29 -0400 Original-Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 151GjjGV039416; Tue, 1 Jun 2021 16:49:25 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : subject : date : message-id : references : in-reply-to : content-type : content-transfer-encoding : mime-version; s=corp-2020-01-29; bh=P+8otH1yO2puZBrloUOanEhL8A0DQ2WhWGNLje9jJ0E=; b=YmDnNPcfKqRRd5JcQyUh2YtrSlXCp+uXLaKLszpp62c1ARO5v4R4J/dh6o2Kh24srDw4 dpVi7i3sjUW49WAf4hsiXuNbnZFomjd0wz1D1aK2siJ70J84oAlW0aQ8NcuHhdaDm6J5 UG7XD7wDkO/GFbbxkdZsm0m1V0+T1F5UQrfdqC1q6bFEW/7QPwljQ4mO3JEunYDV0K05 vtZaqo65PxQypcDD2Q4OcikuyzFFaE5SWygIuqNz+LewSfUI8xbHQvTbdrQvoB9mBkBz h7HPK/OUPRYn04PHk4l+wT08DvYcq0ahFxjbpAPGmn2lyTagJWXFtMhD3x2uy7wZgoxq Pg== Original-Received: from userp3020.oracle.com (userp3020.oracle.com [156.151.31.79]) by aserp2120.oracle.com with ESMTP id 38udjmp5x1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 01 Jun 2021 16:49:25 +0000 Original-Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 151GlECs154175; Tue, 1 Jun 2021 16:49:24 GMT Original-Received: from nam12-mw2-obe.outbound.protection.outlook.com (mail-mw2nam12lp2047.outbound.protection.outlook.com [104.47.66.47]) by userp3020.oracle.com with ESMTP id 38uycret58-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 01 Jun 2021 16:49:24 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=TT7OEqlGNc6acC+/5moHPzAYMtjKOUETNoGgODKH2ECn9P/pGzxSPpnRH+4BQMljoErjQxKnXaRskxZt/PG5uteDbDjNvUVXSiykqKcRj07pTmufdKKFqs0g7WY9XxehUjt1Ht11X/bZyruEMMzhYizfv1BpIbDPWQpcbuiNqxAFtXIsPO/ZDqC9Fa7yy2lUuVSW3JJCsll0pMeCsl+y6xqB20xRUbAosLRGlnt723oH7g4bJ+eIJf7V7ck7GVtW2EyVZVQ7LanDvaw+lmb+bCRFuL4g5+rTmOZqN2kPYDY+KJAzV11DoHmQu6fz/jCz0j35W5Svk4bJhSqP1+CHjQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=P+8otH1yO2puZBrloUOanEhL8A0DQ2WhWGNLje9jJ0E=; b=cJTT/z2bJjK2SByQSFU2jxbJv2E/jiV918tPsYDT4KZQRGFThB6ZTZOGZoi0G6KfghK5eDMxFcxcEZbf3ZqP1IKKQOGrh51byUS64QV+Dx1XvD0Wxmt5J4yxVSQtlODI0xQxrtCb7zbNO+lM1G2yMzuAl9L4bOUWoYC1wcgvC8F6UUmjiGt9mVamN7qba5o91AneHodp/7osPH0fGPkbZze2iIKdIoODWbSktgnFe8JVpirRCQU9VyJ/eZiyVYf9YxuI7cOIUwCCzba4bj7t0LQwqFLcE+qfs4u4xjrnHGw5z+/oPMc9rg2SyQo+0mwT+D91DJnYmhEIJhTt1PX/gw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=P+8otH1yO2puZBrloUOanEhL8A0DQ2WhWGNLje9jJ0E=; b=rt0MmE8ru1RyetvtaqzOzDWMp2Wusq6bLoE+hWUaeQRs2E9bCes3ZNj46tpZdDBxs3E6AXSEUNjkkOrLvz2/t/lXtp9dO4vGJv9eGTvKk+6E63n3Q0lA5hyCoadhtq/M3kQSXM2kB4NHXxO+xPgmPXsnMqXP0paLkV+YzvJr2Vg= Original-Received: from SA2PR10MB4474.namprd10.prod.outlook.com (2603:10b6:806:11b::15) by SN6PR10MB2526.namprd10.prod.outlook.com (2603:10b6:805:40::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4173.22; Tue, 1 Jun 2021 16:49:21 +0000 Original-Received: from SA2PR10MB4474.namprd10.prod.outlook.com ([fe80::2109:9725:fd4a:6494]) by SA2PR10MB4474.namprd10.prod.outlook.com ([fe80::2109:9725:fd4a:6494%6]) with mapi id 15.20.4173.030; Tue, 1 Jun 2021 16:49:21 +0000 Thread-Topic: [External] : Re: minor mode for highlighting character classes such as non-ascii (bug 47455) Thread-Index: AQHXVwQI2gFwlKRPOk+4g8U4BcsWKar/WqPQ In-Reply-To: <878s3tczpg.fsf@telefonica.net> Accept-Language: en-US Content-Language: en-US authentication-results: wanadoo.es; dkim=none (message not signed) header.d=none;wanadoo.es; dmarc=none action=none header.from=oracle.com; x-originating-ip: [73.170.83.28] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: fea00b59-6a04-45c9-efc4-08d9251d34b2 x-ms-traffictypediagnostic: SN6PR10MB2526: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:7219; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:SA2PR10MB4474.namprd10.prod.outlook.com; PTR:; CAT:NONE; SFS:(396003)(376002)(136003)(366004)(39860400002)(346002)(33656002)(8936002)(44832011)(966005)(52536014)(8676002)(122000001)(66476007)(66446008)(316002)(9686003)(66556008)(186003)(478600001)(83380400001)(71200400001)(5660300002)(26005)(86362001)(76116006)(66946007)(6506007)(55016002)(7696005)(38100700002)(110136005)(2906002)(64756008); DIR:OUT; SFP:1101; x-ms-exchange-antispam-messagedata: =?iso-8859-1?Q?2n5c7dGm1MuKyr+qTRNu5pd2azmrHloCw+Hxi59CbBmctUBbrsVzfMJlh1?= =?iso-8859-1?Q?qsp75XH7xZvEbs2eCZxaH33hTQ2EQlh1gsv3Fggsa6J4FGIYGADuVlmH1C?= =?iso-8859-1?Q?5YT4+tohCKw5EZ6JWkKenPIpUxvYAlBAGXQOWHN0Z2mntpuN6IThnQIk/O?= =?iso-8859-1?Q?0r9SDU6nr/lBGScnfi8WY973NGJEtTlqO132+npTAK9EVlx9kzYFajim6W?= =?iso-8859-1?Q?Pnq6m703zX289KS0gQOQuQp2rSQOnjbN5oBX9KB5CQPmRfbRQCcXCxVb9R?= =?iso-8859-1?Q?PLtKtFSpw3KZ62qVNLz2ajnXLMPHuFj/aXY2hgg1YqF73E4yKqXacSCL32?= =?iso-8859-1?Q?NphP/9AfTLYNZb5rd6+8+xSVdWkSnhWy/yh/KYbuoCKzROrJFoDZcbv3PX?= =?iso-8859-1?Q?omgj1abiiSROrGHiy0c0I24aful2z86S+G8ERSn2ZZDhwO9Uni9GK36QNX?= =?iso-8859-1?Q?rPNsoCEekAFBEfStuj5QfZFOux04HyRBH1imcD9MjuYQB0fJDcr/qmSjQl?= =?iso-8859-1?Q?9oSXwDKsOktvr57BtYTLSNlo6XJnle34EPjEuOga+s+mtpLWOwz6gP2pzF?= =?iso-8859-1?Q?NjU16ipkOjSZ8BNMq/answpJx2rpbCSRt1tp6139RZSFh87mk3BhAPYqpl?= =?iso-8859-1?Q?tT x-ms-exchange-transport-forked: True X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: SA2PR10MB4474.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: fea00b59-6a04-45c9-efc4-08d9251d34b2 X-MS-Exchange-CrossTenant-originalarrivaltime: 01 Jun 2021 16:49:21.7081 (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: DyA/esZBgxeNh9HZW8yJddWA2Vq0heJB1jbxZdkv0phEUR0A1NOs9DbtioAAqmGeVr0fRvjElyoL8eHEq+VfJw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR10MB2526 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=10002 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 spamscore=0 malwarescore=0 phishscore=0 mlxlogscore=991 suspectscore=0 bulkscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2106010113 X-Proofpoint-GUID: 8RNlb42gxQcLGcxdqcUhRd1m93k7IUiQ X-Proofpoint-ORIG-GUID: 8RNlb42gxQcLGcxdqcUhRd1m93k7IUiQ X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=10002 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 impostorscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 adultscore=0 spamscore=0 suspectscore=0 bulkscore=0 priorityscore=1501 mlxlogscore=999 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2106010113 Received-SPF: pass client-ip=141.146.126.78; envelope-from=drew.adams@oracle.com; helo=aserp2120.oracle.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_BL=0.001, RCVD_IN_MSPIKE_L3=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:270221 Archived-At: > > In the context of bug 47455 the idea emerged that it can be useful > > to have a minor mode that highlights non-ascii characters. I want > > to ask hear for feedback: does such a mode already exist? Can it be > > useful to have this minor mode more general such that the highlighted > > character classes become configurable? Are there possible use cases > > for this beyond non-ascii characters? Eli> We already highlight some potentially confusing characters, Eli> see no-break-char-display and faces nobreak-space and Eli> nobreak-hyphen. OF> Highlighting characters that does not belong to certain OF> coding system would be useful to me. OF> OF> Sometimes I work on source code encoded as UTF-8 but they OF> must not contain characters not encodable by windows-1252. OF> More precisely, string literals must be composed of OF> characters encodable by windows-1252. That highlighting of no-break chars is limited. 1. You can't specify which no-break chars you want to highlight, and you can't highlight different such chars differently. 2. It is low-level highlighting, which doesn't use font-lock. `whitespace.el' is similarly limited, e.g. coupling space and hard-space chars, for highlighting. More useful is something like what library `highlight-chars.el' offers. You can highlight any chars you like, in any way you like. You can highlight arbitrary chars, chars in char ranges, char classes, or charsets. https://www.emacswiki.org/emacs/ShowWhiteSpace#HighlightChars https://www.emacswiki.org/emacs/download/highlight-chars.el