From unknown Sun Jun 22 11:46:35 2025 X-Loop: help-debbugs@gnu.org Subject: bug#24176: Confusing interaction between define-derived-mode and font-lock-add-keywords Resent-From: =?UTF-8?Q?Cl=C3=A9ment?= Pit--Claudel Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 07 Aug 2016 06:42:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 24176 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: To: 24176@debbugs.gnu.org X-Debbugs-Original-To: bug-gnu-emacs@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.14705521086608 (code B ref -1); Sun, 07 Aug 2016 06:42:01 +0000 Received: (at submit) by debbugs.gnu.org; 7 Aug 2016 06:41:48 +0000 Received: from localhost ([127.0.0.1]:58319 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bWHmO-0001iW-Fm for submit@debbugs.gnu.org; Sun, 07 Aug 2016 02:41:48 -0400 Received: from eggs.gnu.org ([208.118.235.92]:45380) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bWHmM-0001iI-PN for submit@debbugs.gnu.org; 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Sun, 07 Aug 2016 02:41:33 -0400 Received: from [18.189.62.146] ([18.189.62.146]) by mrelayeu.kundenserver.de (mreue005) with ESMTPSA (Nemesis) id 0Lg4lz-1auUJr0LMJ-00peAD for ; Sun, 07 Aug 2016 08:41:32 +0200 From: =?UTF-8?Q?Cl=C3=A9ment?= Pit--Claudel Message-ID: <1b9e5891-9843-a9d7-c29f-7b9544a72a12@live.com> Date: Sun, 7 Aug 2016 02:41:30 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="k1xLUDNVJKAtHAwPVBw996mcp09fxdtrx" X-Provags-ID: V03:K0:mEtoTGaQYEMtHachKhijURy4EyX/EXJT29lIsZ84BcKzNhFTHVB rO/ECnchRUXaEJohYefEzOaYgEvQ43b7I1yg/r6/LlmB7UO1ueqwWwss35vIZYhAq+NZfDK 6bAhBS10iPiQSR+eR3VTjSZ8Kbi+ESxnn/2KgF4SdemqynHNCtoiLIfMUF5KOar040BgkSO XQcSflIX4bQ+nGqE8++8Q== X-UI-Out-Filterresults: notjunk:1;V01:K0:Nk0SCXi2HRk=:j4U/l4q9Xz2FeVH4CUuq2x eJwptvxHlreYm9RJLDJqUvj2WWt7uGzZ0Ue7QUNCiyGreJn4sIacRfGOKYoyTDtFQL0y8+rPc Deo44vVAcFj8a3zzRxlN+MQ8rqT69ZYQsdP8yqVDG84F5Xk0yOWTCBncYjg9xv+ZyFmz+6z8d BrrpE/NqUWjcK0HTINnHne9Yj9IJE0ISAaGG+Lw6oEPCDOCXNed08UQuJmrNLAHKkXiSkVePU krap0XNdltN+TJ4/P33dR1SbXBmBOOEfoAaZYgedfSfnHevpgtc+7TFwFcwdyAronfMQzIZhf +QP+AUqcScPIqCuXNWhAkd+ZAdmilYq9YRFewj1bQSgGTCjve7BVPqB4qeBecsEoIXzvf4EK0 K1nVGHps4wue+aar7q8tzL55kFQqnAFElovQWhuDhGSqQo5uM6LyF1bBr5aDB7tOTTPtonqVY F1WwzqEROsgpSOnslaCfZR/nM3dIuqnDCyoB+0eLg8GukU0A8XnPq1li7DkL5ahlJVqVRi5Wk MnGrO8ZOFnesGqskTItS0mQwp5dPJqhMsE4e+2CXYYWB/DYk0DdUbQUuDeIdpNwDglIFek4uD yZx5+xM8zRCJeRGIUpRcQA7WQ5Tv2VVqiMIW7rUqnRdoclinwPcrxf+H+nv4Ib4cFQ5ynovR3 jIFWtQQlaTLX76Q1dJECSqpT6DQ/VtT7/WCyUXW8fSMQCwZqXm36w/9Nxd+lYIvtseE0= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -4.0 (----) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 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: -4.0 (----) This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --k1xLUDNVJKAtHAwPVBw996mcp09fxdtrx Content-Type: multipart/mixed; boundary="Xg1PxpNVlX4jajOqG37CK8bp3M9JEwhET" From: =?UTF-8?Q?Cl=c3=a9ment_Pit--Claudel?= To: bug-gnu-emacs@gnu.org Message-ID: <1b9e5891-9843-a9d7-c29f-7b9544a72a12@live.com> Subject: Confusing interaction between define-derived-mode and font-lock-add-keywords --Xg1PxpNVlX4jajOqG37CK8bp3M9JEwhET Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi bug-gnu-emacs, Given the following mode definitions, I was expecting ~/a to have one key= word, ~/b to have two, and ~/c to have three: (define-derived-mode ~/a fundamental-mode (font-lock-add-keywords nil `(("a" 0 'font-lock-keyword-face)))) (define-derived-mode ~/b ~/a (font-lock-add-keywords nil `(("b" 0 'font-lock-builtin-face)))) (define-derived-mode ~/c ~/b (font-lock-add-keywords nil `(("c" 0 'font-lock-constant-face)))) This assumption is wrong, as can be easily verified by opening a new buff= er, inserting "abc", and switching between ~/a, ~/b, ~/c. What's going on? Is this a font-lock bug, a doc bug, or a user-got-confus= ed issue? Cl=C3=A9ment. --Xg1PxpNVlX4jajOqG37CK8bp3M9JEwhET-- --k1xLUDNVJKAtHAwPVBw996mcp09fxdtrx Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJXptgaAAoJEPqg+cTm90wjhFYP/RA3CAqdeygk2+p8iUyOqDL1 ei7xaYpk8CVPhEJzKym/lLBso0Q97Jype3DJ2Q80KKXBg8Hrkx2R2Xdjj4D9dXMR WgLnqgtFu8i1Ze/KqftgO1XN2bFxX+oQQieM+43gbsQvKqczFHjT07LwCSSypOCf jo+340rG6pXot8swQUdCbnGKWYVpXiqahWoqtWehh/HKPztJ3TojZF8O1gR7/Tmg FbG2XoOoc5CGErVAJwbLltGQuUdoHkPOrP0RmgXJD0ddkdARHe4XUx5s7n2kRU4u sqdYdVH0ABtUj8t/1w+XtEdtb10UbCycMFwUU5+IxWAjsWGb9+bSnVfKGqIxo1u/ PJkuprnK43xUcDnDKmVeRDYlHdqF1sdcIjrvs0MZPEHAgrOSugRrgg5FyW24qTvB oms+0kbqcmQYYcIB7mb5IsPRP5z9O6/qNECRBAg6FH1Z4RHZXXhPd1cv+YOOEr9y xxPJ/1UUofLovhs/z7/S09r7u6VHam98KJeV2JYVRUgo8QB/XWZmDyRBVF4kx9i/ x4391naDqr3IvvztSc6rPIWtuGOvXRp7Bzy1jK/9sUBvGkivTv9is9iElvXzmd+B 7lGrdgb+5UDuuFg4hTs4OjBdJAY5Qi61ERUl7qn7f8CksqZx6/rpxs2YOM0bQjz9 5m1cDROdV6cVeiCKt+u9 =03YJ -----END PGP SIGNATURE----- --k1xLUDNVJKAtHAwPVBw996mcp09fxdtrx-- From unknown Sun Jun 22 11:46:35 2025 X-Loop: help-debbugs@gnu.org Subject: bug#24176: Acknowledgement (Confusing interaction between define-derived-mode and font-lock-add-keywords) Resent-From: =?UTF-8?Q?Cl=C3=A9ment?= Pit--Claudel Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 07 Aug 2016 06:58:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 24176 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: To: 24176@debbugs.gnu.org Received: via spool by 24176-submit@debbugs.gnu.org id=B24176.14705530567958 (code B ref 24176); Sun, 07 Aug 2016 06:58:01 +0000 Received: (at 24176) by debbugs.gnu.org; 7 Aug 2016 06:57:36 +0000 Received: from localhost ([127.0.0.1]:58324 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bWI1f-00024I-Sd for submit@debbugs.gnu.org; Sun, 07 Aug 2016 02:57:36 -0400 Received: from mout.kundenserver.de ([212.227.17.13]:53158) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bWI1e-000244-HL for 24176@debbugs.gnu.org; Sun, 07 Aug 2016 02:57:35 -0400 Received: from [18.189.62.146] ([18.189.62.146]) by mrelayeu.kundenserver.de (mreue104) with ESMTPSA (Nemesis) id 0MJkO4-1bVC5r3TyW-0017fD for <24176@debbugs.gnu.org>; Sun, 07 Aug 2016 08:57:28 +0200 References: <1b9e5891-9843-a9d7-c29f-7b9544a72a12@live.com> From: =?UTF-8?Q?Cl=C3=A9ment?= Pit--Claudel Message-ID: <0a87c159-8bd5-3fda-0b03-d1426e6a26d0@live.com> Date: Sun, 7 Aug 2016 02:57:19 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="93LF6nMOhpXGhhMR2DIUiqSTvHfbapkqN" X-Provags-ID: V03:K0:gIRzCvd6ovug7oOmjEvQYAIgmC5t/vh8BaEERPm4+Yaf4dhGn64 0ei3gZWWQHx1JDUUZ4LIJkU7LSUkCxW0UvI+ASDbzfbPj7RjS8AbyKc6vTCS2J9VRyUvS1d vp+H7lQa0Pb4dzRpZ3z1tK/CAop0snhusrq8eCpG0Rm8GekLAHXbw9NmW1daCphZ/wD9y8x /R6XaAeiBJnCPUOyLNVPA== X-UI-Out-Filterresults: notjunk:1;V01:K0:gnYBqk8k2p0=:TZE8f1kO8ISS2/AjfTHTHe sC+j8fPlt1QkDjmRyLT22rP5LcblaRld0x2oyNPooX2OT2TnmVjOikbbg5iy+uZZIQD5dd7Mi oV3QUb62oqciPdSsdn8zB2G5lkSA7/srJ8+pKybK6n54GkmctBEQIR0SuOwYr6zf1pmIuFa6z iJ/8amLVqIi2+QptcTjKugGf0qbXLFNuoJI+8zbWz+r8vm4AUJ2fTTkmt/8zWX1Lc6JMfC1kO KbirClZP6zP8Ds3Zp5VzeMQ98+ooBOrNLfUx/gTdzYxLJ/SVMSSJupifUclix3kGNQw5CjfvV JUx7BZMkNwu1gzxc/3n9u4aMLgdzzGFOCspjIzGqaRRnwtjF+N2OSKZcyFGyrnIaApsHs6oA4 b6Nx5qNllf6J5YXgON/ByCJBxocRvkN081OkSqK1E+l3kJDLoHHZ/NUw1WkKr8jWtVU60mhIA n0gG5kMPSBOiBEcBCVPhmYpCuaAzKb+elcRbV4nnhKE0OgwlUl4Im7y5d0Hz6TpuZvRX3VsdN zZL+HRt6yc1cZCKRwPmMYJCX4CkKvAEU9TDXdrjxbQ/OLi0nYjoVfFl/ssIYNAsKonr6N89DP /75ceB/VEKbn+tWYD+pFJfrBrPR36yrQ8q8iD9DCggqpwg0Jn0tXGR2csgLFv+ajeXQx4ic2W 5JL2KZB7rOJv1wdYp/xFDozo6/Ywfp/AZV2uFbwbzqwG99/UBSSG08BEWkLw2JCTmPEw= X-Spam-Score: 1.0 (+) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 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: 1.0 (+) This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --93LF6nMOhpXGhhMR2DIUiqSTvHfbapkqN Content-Type: multipart/mixed; boundary="k6Uir5x9Wn8kfhf1b8QQofRQwr4R6Rqb1" From: =?UTF-8?Q?Cl=c3=a9ment_Pit--Claudel?= To: 24176@debbugs.gnu.org Message-ID: <0a87c159-8bd5-3fda-0b03-d1426e6a26d0@live.com> Subject: Re: bug#24176: Acknowledgement (Confusing interaction between define-derived-mode and font-lock-add-keywords) References: <1b9e5891-9843-a9d7-c29f-7b9544a72a12@live.com> In-Reply-To: --k6Uir5x9Wn8kfhf1b8QQofRQwr4R6Rqb1 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Sorry, the original report had a confusing example; here is a fixed copy.= (define-derived-mode ~/a fundamental-mode "~/a" (font-lock-add-keywords nil `(("a" 0 'font-lock-keyword-face)))) (define-derived-mode ~/b ~/a "~/b" (font-lock-add-keywords nil `(("b" 0 'font-lock-builtin-face)))) (define-derived-mode ~/c ~/b "~/c" (font-lock-add-keywords nil `(("c" 0 'font-lock-constant-face)))) Explicitly calling (setq font-lock-major-mode major-mode) before calling = font-lock-add-keywords yields the expected behaviour. Cl=C3=A9ment. --k6Uir5x9Wn8kfhf1b8QQofRQwr4R6Rqb1-- --93LF6nMOhpXGhhMR2DIUiqSTvHfbapkqN Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCAAGBQJXptvPAAoJEPqg+cTm90wjrU0QAKaizdkb5V6YfCadbJcjunw2 UZtURgZp8B/+KOBLhixySB9eIG4IAG+AtJvr/QFeGGLr3/sqgI0i7Q2xi8REcddu EN5Chg5GxU1N7SK2YKhRVZss8tPJqBVQwBMvQa79h6RbwYAqUSRp3Hwbi8nG16jQ J+sML6PQ7vA4A1ApcjiNDw4V1DFOa/RoIf2enQhR2VVGONGCgtbCDWnAugYR19qR 7tHWwhw4NUxZ03y59M3DlWQ+n5rpd5SCBmtzAxa8VcOku0WWOwfVpAUnBoDhazEs XvJgym8uDkRrxH5Rxy2AY380c24YmVFVWxA+Y4lVnD8xOgNc3PNWfWMt11I3OC83 CrTBUJ7oWZSjq0kHBByP4m+vXPOcwtHL4DS0s5IpZ8+HOMLb5abTJfl/fEzjhBBf E0UrJ4LRVHuHU6bA4aY2ccGAWZe6I7Ap/fg/hAvB4YaSRF2bPeHvB936gYLQRVtq D987wGZ1z1+IJ+s6zYJMVUYV4mhkBr38cfj7982nwZ3A0HRaPLygPQ7BVQ+OCrpX alZiQHPEH+I/r0UZKGbX9vLlhI/qt/qE6OR5eD/ydiyU5itFmK9hpvkjedsHvV9Y vVLAjhoqqPsvs966x/dNeQqk6PbmNO2r66MMMHUR/ZL7D0k0IMPueOiRuvzVK7Vl VrnTvohnLfQcN/HA3K3w =MdlO -----END PGP SIGNATURE----- --93LF6nMOhpXGhhMR2DIUiqSTvHfbapkqN-- From unknown Sun Jun 22 11:46:35 2025 X-Loop: help-debbugs@gnu.org Subject: bug#24176: Confusing interaction between define-derived-mode and font-lock-add-keywords Resent-From: npostavs@users.sourceforge.net Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 25 Aug 2016 00:54:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 24176 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: To: =?UTF-8?Q?Cl=C3=A9ment?= Pit--Claudel Cc: 24176@debbugs.gnu.org Received: via spool by 24176-submit@debbugs.gnu.org id=B24176.147208639019042 (code B ref 24176); 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charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: -0.7 (/) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 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: -0.7 (/) severity 24176 minor tags 24176 confirmed found 24176 25.1 quit Cl=C3=A9ment Pit--Claudel writes: > Sorry, the original report had a confusing example; here is a fixed copy. > > (define-derived-mode ~/a fundamental-mode "~/a" > (font-lock-add-keywords nil `(("a" 0 'font-lock-keyword-face)))) > (define-derived-mode ~/b ~/a "~/b" > (font-lock-add-keywords nil `(("b" 0 'font-lock-builtin-face)))) > (define-derived-mode ~/c ~/b "~/c" > (font-lock-add-keywords nil `(("c" 0 'font-lock-constant-face)))) > > Explicitly calling (setq font-lock-major-mode major-mode) before calling = font-lock-add-keywords yields the expected behaviour. Yeah, it seems `font-lock-set-defaults' (called from `font-lock-add-keywords') deletes the parent mode's added keywords since they were not from the "correct" mode. (defun font-lock-set-defaults () "Set fontification defaults appropriately for this mode. Sets various variables using `font-lock-defaults' and `font-lock-maximum-decoration'." ;; Set fontification defaults if not previously set for correct major= mode. (unless (and font-lock-set-defaults (eq font-lock-major-mode major-mode)) (setq font-lock-major-mode major-mode) (setq font-lock-set-defaults t) ... From unknown Sun Jun 22 11:46:35 2025 X-Loop: help-debbugs@gnu.org Subject: bug#24176: Confusing interaction between define-derived-mode and font-lock-add-keywords Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 17 Nov 2019 07:01:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 24176 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: confirmed To: npostavs@users.sourceforge.net Cc: =?UTF-8?Q?Cl=C3=A9ment?= Pit--Claudel , Stefan Monnier , 24176@debbugs.gnu.org Received: via spool by 24176-submit@debbugs.gnu.org id=B24176.15739740071916 (code B ref 24176); Sun, 17 Nov 2019 07:01:02 +0000 Received: (at 24176) by debbugs.gnu.org; 17 Nov 2019 07:00:07 +0000 Received: from localhost ([127.0.0.1]:40065 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iWEXW-0000UN-CN for submit@debbugs.gnu.org; Sun, 17 Nov 2019 02:00:06 -0500 Received: from quimby.gnus.org ([95.216.78.240]:43312) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iWEXT-0000RO-Ds for 24176@debbugs.gnu.org; Sun, 17 Nov 2019 02:00:04 -0500 Received: from cm-84.212.202.86.getinternet.no ([84.212.202.86] helo=marnie) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1iWEXK-0004Gs-KX; Sun, 17 Nov 2019 07:59:57 +0100 From: Lars Ingebrigtsen References: <1b9e5891-9843-a9d7-c29f-7b9544a72a12@live.com> <0a87c159-8bd5-3fda-0b03-d1426e6a26d0@live.com> <87k2f5u0sk.fsf_-_@users.sourceforge.net> Date: Sun, 17 Nov 2019 07:59:53 +0100 In-Reply-To: <87k2f5u0sk.fsf_-_@users.sourceforge.net> (npostavs@users.sourceforge.net's message of "Wed, 24 Aug 2016 20:53:15 -0400") Message-ID: <87eey7dm3a.fsf@gnus.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Report: Spam detection software, running on the system "quimby.gnus.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: npostavs@users.sourceforge.net writes: > =?UTF-8?Q?Cl=C3=A9ment?= Pit--Claudel writes: > >> Sorry, the original report had a confusing example; here is a fixed copy. >> >> (define-derived-mode ~/a fundamental-mode "~/a" >> (f [...] Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 URIBL_BLOCKED ADMINISTRATOR NOTICE: The query to URIBL was blocked. See http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block for more information. [URIs: live.com] -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-Spam-Score: 0.0 (/) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 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: -1.0 (-) npostavs@users.sourceforge.net writes: > Cl=C3=A9ment Pit--Claudel writes: > >> Sorry, the original report had a confusing example; here is a fixed copy. >> >> (define-derived-mode ~/a fundamental-mode "~/a" >> (font-lock-add-keywords nil `(("a" 0 'font-lock-keyword-face)))) >> (define-derived-mode ~/b ~/a "~/b" >> (font-lock-add-keywords nil `(("b" 0 'font-lock-builtin-face)))) >> (define-derived-mode ~/c ~/b "~/c" >> (font-lock-add-keywords nil `(("c" 0 'font-lock-constant-face)))) >> >> Explicitly calling (setq font-lock-major-mode major-mode) before >> calling font-lock-add-keywords yields the expected behaviour. > > Yeah, it seems `font-lock-set-defaults' (called from > `font-lock-add-keywords') deletes the parent mode's added keywords since > they were not from the "correct" mode. > > (defun font-lock-set-defaults () > "Set fontification defaults appropriately for this mode. > Sets various variables using `font-lock-defaults' and > `font-lock-maximum-decoration'." > ;; Set fontification defaults if not previously set for correct maj= or mode. > (unless (and font-lock-set-defaults > (eq font-lock-major-mode major-mode)) > (setq font-lock-major-mode major-mode) > (setq font-lock-set-defaults t) > ... Stefan, is this working as designed? If so, the behaviour should perhaps be mentioned in the doc for font-lock-add-keywords and/or define-derived-mode? --=20 (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no From unknown Sun Jun 22 11:46:35 2025 X-Loop: help-debbugs@gnu.org Subject: bug#24176: Confusing interaction between define-derived-mode and font-lock-add-keywords Resent-From: Stefan Monnier Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 17 Nov 2019 18:56:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 24176 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: confirmed To: Lars Ingebrigtsen Cc: =?UTF-8?Q?Cl=C3=A9ment?= Pit--Claudel , 24176@debbugs.gnu.org, npostavs@users.sourceforge.net Received: via spool by 24176-submit@debbugs.gnu.org id=B24176.157401695919697 (code B ref 24176); Sun, 17 Nov 2019 18:56:02 +0000 Received: (at 24176) by debbugs.gnu.org; 17 Nov 2019 18:55:59 +0000 Received: from localhost ([127.0.0.1]:42637 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iWPiJ-00057d-G5 for submit@debbugs.gnu.org; Sun, 17 Nov 2019 13:55:59 -0500 Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:35485) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1iWPiH-00057P-L9 for 24176@debbugs.gnu.org; Sun, 17 Nov 2019 13:55:58 -0500 Received: from pmg1.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id EF0561004B3; Sun, 17 Nov 2019 13:55:51 -0500 (EST) Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id B5A9C1003EC; Sun, 17 Nov 2019 13:55:50 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1574016950; bh=bjX2T3++xmdiS+mOQM7Psk+4HK41DUyFylr3Zsgxr04=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=XwfbNHpl9DdTDTuxGuv2d+6pSDULNTid4oXctz7dwI8UXSyrUpWTp2hYIJr+H/dZP Q11spPkyNknawbz9kWx45j3SfSSmW6WrcMLC1i7elfBLAfpRJphACEzSA0hT/HHHx7 accNxehs+pphNDyzhClA4b2vFeRqk2bXfvT3J96tXRynvvFi5w+d9Gt8FS82g+xNUE 7O8Weo3WmluTU4WuZbTYF2fIl0JIKVBFPr79RBSuCU3N9y03diSqgcof9kVT4r5A3u YVhXSO8McR6+XNepRCIECYT472/rbpN0hsnSOjmbELAU/P+SzF73lPrc2kqD18PPH/ M1r/geq6bzYMg== Received: from alfajor (unknown [216.154.18.30]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 663AC120B1A; Sun, 17 Nov 2019 13:55:50 -0500 (EST) From: Stefan Monnier Message-ID: References: <1b9e5891-9843-a9d7-c29f-7b9544a72a12@live.com> <0a87c159-8bd5-3fda-0b03-d1426e6a26d0@live.com> <87k2f5u0sk.fsf_-_@users.sourceforge.net> <87eey7dm3a.fsf@gnus.org> Date: Sun, 17 Nov 2019 13:55:49 -0500 In-Reply-To: <87eey7dm3a.fsf@gnus.org> (Lars Ingebrigtsen's message of "Sun, 17 Nov 2019 07:59:53 +0100") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-SPAM-INFO: Spam detection results: 0 ALL_TRUSTED -1 Passed through trusted hosts only via SMTP AWL -0.080 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DKIM_SIGNED 0.1 Message has a DKIM or DK signature, not necessarily valid DKIM_VALID -0.1 Message has at least one valid DKIM or DK signature DKIM_VALID_AU -0.1 Message has a valid DKIM or DK signature from author's domain X-SPAM-LEVEL: X-Spam-Score: -2.3 (--) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 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: -3.3 (---) > Stefan, is this working as designed? Not really, no. The design didn't take this into account at least. > If so, the behaviour should perhaps be mentioned in the doc for > font-lock-add-keywords and/or define-derived-mode? I think it'd be better to fix it ;-) Stefan From unknown Sun Jun 22 11:46:35 2025 X-Loop: help-debbugs@gnu.org Subject: bug#24176: Confusing interaction between define-derived-mode and font-lock-add-keywords Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 24 Jan 2022 10:57:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 24176 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: confirmed To: Stefan Monnier Cc: =?UTF-8?Q?Cl=C3=A9ment?= Pit--Claudel , npostavs@users.sourceforge.net, 24176@debbugs.gnu.org Received: via spool by 24176-submit@debbugs.gnu.org id=B24176.164302179120936 (code B ref 24176); Mon, 24 Jan 2022 10:57:02 +0000 Received: (at 24176) by debbugs.gnu.org; 24 Jan 2022 10:56:31 +0000 Received: from localhost ([127.0.0.1]:42332 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nBx1T-0005Rc-HG for submit@debbugs.gnu.org; Mon, 24 Jan 2022 05:56:31 -0500 Received: from quimby.gnus.org ([95.216.78.240]:49360) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nBx1R-0005RO-W1 for 24176@debbugs.gnu.org; Mon, 24 Jan 2022 05:56:30 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=QluqnGOtlUeemPtmAkzbd2BWkA8EwfaTlDvyW2ZDVos=; b=BELoC7MIG8etSnLc49whn6m89t k3HpXEoP1wQjKnCI6kdGTjkHYOhubYwj7losTYYlRNhXk7em/YzR+vrdd5BjxFnMXK22NBa9FAhVu ubL1gHsN4e/5iNfTjS0sV4yjc/7huR/IKrN0tPwvPXxzXRg2pBDlN6WaZoUqz63RCtnc=; Received: from [84.212.220.105] (helo=giant) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nBx1H-0006vp-EQ; Mon, 24 Jan 2022 11:56:22 +0100 From: Lars Ingebrigtsen References: <1b9e5891-9843-a9d7-c29f-7b9544a72a12@live.com> <0a87c159-8bd5-3fda-0b03-d1426e6a26d0@live.com> <87k2f5u0sk.fsf_-_@users.sourceforge.net> <87eey7dm3a.fsf@gnus.org> X-Now-Playing: The Smiths's _The World Won't Listen_: "Asleep" Date: Mon, 24 Jan 2022 11:56:18 +0100 In-Reply-To: (Stefan Monnier's message of "Sun, 17 Nov 2019 13:55:49 -0500") Message-ID: <87ilu91jxp.fsf@gnus.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Report: Spam detection software, running on the system "quimby.gnus.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: Stefan Monnier writes: >> Stefan, is this working as designed? > > Not really, no. The design didn't take this into account at least. > >> If so, the behaviour should perhaps be mentioned in the doc for >> font-lock-add-key [...] Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-Spam-Score: -2.3 (--) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 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: -3.3 (---) Stefan Monnier writes: >> Stefan, is this working as designed? > > Not really, no. The design didn't take this into account at least. > >> If so, the behaviour should perhaps be mentioned in the doc for >> font-lock-add-keywords and/or define-derived-mode? > > I think it'd be better to fix it ;-) I think I've fixed this in Emacs 29. -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no From debbugs-submit-bounces@debbugs.gnu.org Mon Jan 24 05:56:35 2022 Received: (at control) by debbugs.gnu.org; 24 Jan 2022 10:56:36 +0000 Received: from localhost ([127.0.0.1]:42335 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nBx1X-0005Rt-OW for submit@debbugs.gnu.org; Mon, 24 Jan 2022 05:56:35 -0500 Received: from quimby.gnus.org ([95.216.78.240]:49372) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1nBx1U-0005RS-Sh for control@debbugs.gnu.org; Mon, 24 Jan 2022 05:56:33 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Subject:From:To:Message-Id:Date:Sender:Reply-To:Cc: MIME-Version:Content-Type:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=0/gIy6jS2yRnxGwiFFJSR3SY6vSH5OKPVuUuNNAFToc=; b=d+mvaoUIROnYjnQXOvMmVr+k6l cPVVAbgRPmI+QY/lGpu1glVeycWLBPoEddp6r8nuWJbjXVlA3NT1IgPT3KQQUzHQRYNSd8tP+RhvO Uoj/mvMNA+rAVGFPmsazeEkb0vUU+oMyt6tQ7IAKv1z04n2rknzsEzzSBfYNOyK6U42s=; Received: from [84.212.220.105] (helo=giant) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nBx1M-0006vw-Ss for control@debbugs.gnu.org; Mon, 24 Jan 2022 11:56:27 +0100 Date: Mon, 24 Jan 2022 11:56:24 +0100 Message-Id: <87h79t1jxj.fsf@gnus.org> To: control@debbugs.gnu.org From: Lars Ingebrigtsen Subject: control message for bug #24176 X-Spam-Report: Spam detection software, running on the system "quimby.gnus.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: close 24176 29.1 quit Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 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: -3.3 (---) close 24176 29.1 quit