From unknown Tue Jun 24 05:11:32 2025 X-Loop: help-debbugs@gnu.org Subject: bug#21977: 25.1; visible-bell corrupts screen on Mac OS X 10.11 Resent-From: David Caldwell Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 21 Nov 2015 20:46:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 21977 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: To: 21977@debbugs.gnu.org X-Debbugs-Original-To: bug-gnu-emacs@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.14481387351368 (code B ref -1); Sat, 21 Nov 2015 20:46:01 +0000 Received: (at submit) by debbugs.gnu.org; 21 Nov 2015 20:45:35 +0000 Received: from localhost ([127.0.0.1]:47350 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1a0F2N-0000Lz-32 for submit@debbugs.gnu.org; Sat, 21 Nov 2015 15:45:35 -0500 Received: from eggs.gnu.org ([208.118.235.92]:41966) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1a0F2K-0000Lp-QH for submit@debbugs.gnu.org; Sat, 21 Nov 2015 15:45:33 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1a0F2J-0002bh-CJ for submit@debbugs.gnu.org; Sat, 21 Nov 2015 15:45:32 -0500 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_50,T_DKIM_INVALID autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:56785) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a0F2J-0002bd-9n for submit@debbugs.gnu.org; Sat, 21 Nov 2015 15:45:31 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51964) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a0F2I-0003hf-7e for bug-gnu-emacs@gnu.org; Sat, 21 Nov 2015 15:45:31 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1a0F2E-0002as-WC for bug-gnu-emacs@gnu.org; Sat, 21 Nov 2015 15:45:30 -0500 Received: from sa38.galvanix.net ([98.126.48.38]:55850 helo=kill.porkrind.org) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a0F2E-0002Xr-NP for bug-gnu-emacs@gnu.org; Sat, 21 Nov 2015 15:45:26 -0500 Received: from porkrind.org (cpe-23-241-25-146.socal.res.rr.com [23.241.25.146]) by kill.porkrind.org (Postfix) with ESMTPS id 90F185F142 for ; Sat, 21 Nov 2015 12:45:08 -0800 (PST) Authentication-Results: kill.porkrind.org; dkim=pass (1536-bit key; unprotected) header.d=porkrind.org header.i=@porkrind.org header.b=Cjz0yoEs; dkim-atps=neutral Received: from [10.0.0.10] (black.local [10.0.0.10]) (authenticated bits=0) by porkrind.org (8.15.2/8.15.2/Debian-2) with ESMTPSA id tALKj66s013617 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Sat, 21 Nov 2015 12:45:07 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=porkrind.org; s=apoptygma; t=1448138707; bh=zujiQG802AoUDgP1zVxq0nKN4WBJ9waVFc/8tYyCwTA=; h=To:Subject:From:Date:From; b=Cjz0yoEs87iOtpNNY1G7ZVhmYcKd4cQFGQZHNrmdIrV1oUVSFHNABohB48CXZ0QYj Z5cyjJvpsWCFnY3BJUKJr5zpHC7E8s0QZj6eC8dGR0ZS3Xf1OVjlBQevRViTHIG6xE rPDpf9LkZg5fDOwBK9AA9s2qKAT9ta2QSt+5hcPqG3dJmbFtW9ltLSfm+aUoC1uIfY lq9NAoC8gzQ5spOrAB+6clCTjsUcvx03JDedQUUzQRVeMdy1jOTxv3LHEcI From: David Caldwell X-Enigmail-Draft-Status: N1110 Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwCAQAAAD9CzEMAAAACXBIWXMAAAsTAAALEwEAmpwY AAAABGdBTUEAALGOfPtRkwAAACBjSFJNAAB6JQAAgIMAAPn/AACA6QAAdTAAAOpgAAA6mAAAF2+S X8VGAAABiklEQVR42rRYSZIDIQwzLv7/ZXLoEAzeBKG7ag4DRhZeBKQ0Qr5imLWCrKwn0HImc1Mx aAvmmc/cuAT7RMYws6v/gHeb0p4/y5792GJJlLZWOPgsdV5NaRes4Xe4632sLljD7wKv1Ta74H/h MxecN1Rc2TatYcP7zb+6WFfN/zMSHg1Ymuxjrzd+DuLw6Nlekggt1hvr7KK9tRIX85jjM6GTYhfv nzXH3jBdYc4koueBs66M+Xv9O9n5ML4urWssjGeMY3if3bzGSvk30BQ46OOaxJjLCpzPJAzXrOrD z5VFh58TIiwESIiCHNxxwPTy97qDei8YdpVdyYEv6EQcK8n+iTyE/Cn1eoe7HwN+F56oErVSGtJY Q1sR2ehaUHfjvJuv0tL7qAzEbBmfF2IHrVi8zp9N0pZtQZZHOXp/sLW4+hqKvm3iccaPwP3XgnKX n8/YtVeOsnenRG7VCBFlZ5fe3LOyANCVdGAIwDs7tTXGF4hIk15/iAfSgv2UkNFItSszOG3Ha7r0 GQBerhBkHOAzmQAAAABJRU5ErkJggg== Message-ID: <5650D7D1.4070905@porkrind.org> Date: Sat, 21 Nov 2015 12:45:05 -0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:42.0) Gecko/20100101 Thunderbird/42.0 MIME-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="------------ms020305080601060201090409" X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -4.1 (----) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -4.1 (----) This is a cryptographically signed message in MIME format. --------------ms020305080601060201090409 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hello, Visible bell on Max OS X is a little weird in the first place: It flashes a 128x128 rectangle in the middle of the OS Window. Unfortunately, it's leaving artifacts and corrupted visuals behind on Mac OS X 10.11. A nice example of the issue can be seen here: https://cloud.githubusercontent.com/assets/617316/10954115/97430952-8319-= 11e5-81f4-25054836b901.png It's easy to reproduce: M-x set-variable RET visible-bell RET t RET =2E..then hit `C-g`. I've been looking into this and it actually appears to be a bug in Mac OS X. I made an isolated test program from part of ns_ring_bell() (https://github.com/caldwell/bracketed-window-op-test) that reproduces the problem and have reported the bug to Apple (bug number 23642195, but their bugs are private so having that doesn't help much). Since it's an OS X problem, I'm not really sure if I should be reporting this here. But it seems to be confusing people, so maybe we can work around it somehow until Apple fixes things. I tried to play with NSCompositingOperation for a little bit last night but couldn't get anything reasonable. I see in the git history that someone replaced ns_ring_bell() with some CF graphics stuff, but it got reverted for some reason (maybe GNUStep incompatibility?). Perhaps that can be resurrected and reworked... -David --------------ms020305080601060201090409 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCC DGAwggYkMIIFDKADAgECAgMM240wDQYJKoZIhvcNAQELBQAwgYwxCzAJBgNVBAYTAklMMRYw FAYDVQQKEw1TdGFydENvbSBMdGQuMSswKQYDVQQLEyJTZWN1cmUgRGlnaXRhbCBDZXJ0aWZp Y2F0ZSBTaWduaW5nMTgwNgYDVQQDEy9TdGFydENvbSBDbGFzcyAxIFByaW1hcnkgSW50ZXJt ZWRpYXRlIENsaWVudCBDQTAeFw0xNTAyMDUwMTUxNDdaFw0xNjAyMDYwMDAzMTNaMEAxGzAZ BgNVBAMMEmRhdmlkQHBvcmtyaW5kLm9yZzEhMB8GCSqGSIb3DQEJARYSZGF2aWRAcG9ya3Jp bmQub3JnMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA7HjIR+hHVT+RlXpDQWHt fHToCo718aI00KKtR3fVlcFbFTcrkhZd52HvZvoZPLfV2IkSEMZKEnd3f17iqq5KUXGkvQja WWYv5/7T7cIA+uZJb1mJOQ33tj8Q0esRuPs+VJ6r0DE27ddOgbbUxvCaNGY4FrncDsxexl7Y 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id 1a0vtZ-00055m-9E for control@debbugs.gnu.org; Mon, 23 Nov 2015 13:31:21 -0500 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD autolearn=disabled version=3.3.2 Received: from fencepost.gnu.org ([2001:4830:134:3::e]:42270) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1a0vtZ-00055g-6X for control@debbugs.gnu.org; Mon, 23 Nov 2015 13:31:21 -0500 Received: from rgm by fencepost.gnu.org with local (Exim 4.82) (envelope-from ) id 1a0vtY-0006VV-St for control@debbugs.gnu.org; Mon, 23 Nov 2015 13:31:20 -0500 Subject: control message for bug 21977 To: X-Mailer: mail (GNU Mailutils 2.99.98) Message-Id: From: Glenn Morris Date: Mon, 23 Nov 2015 13:31:20 -0500 X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2001:4830:134:3::e X-Spam-Score: -5.6 (-----) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -5.6 (-----) merge 21662 21977