From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Michael Heerdegen Newsgroups: gmane.emacs.devel Subject: Re: master 2ef6f943abd: Add option to control default outlining in 'C-h b' Date: Tue, 25 Apr 2023 20:32:23 +0200 Message-ID: <878refyfrc.fsf@web.de> References: <168233653969.13461.3810563138120581789@vcs2.savannah.gnu.org> <20230424114219.F2AEAC0004A@vcs2.savannah.gnu.org> <877cu1bf6q.fsf@gmail.com> <834jp5xn7v.fsf@gnu.org> <87a5ywn4qj.fsf@web.de> <83r0s8wjcf.fsf@gnu.org> <87leig9xm8.fsf@gmail.com> <838regwcnt.fsf@gnu.org> <87fs8o9spe.fsf@gmail.com> <835y9kw5ix.fsf@gnu.org> <86h6t3rjl8.fsf@mail.linkov.net> <83leifvqsz.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="28317"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Juri Linkov , rpluim@gmail.com, emacs-devel@gnu.org, orontee@gmail.com To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Apr 25 20:33:23 2023 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 1prNTe-0007BF-ON for ged-emacs-devel@m.gmane-mx.org; Tue, 25 Apr 2023 20:33:22 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1prNSt-0004bH-Ke; Tue, 25 Apr 2023 14:32:35 -0400 Original-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 ) id 1prNSo-0004aK-OT for emacs-devel@gnu.org; Tue, 25 Apr 2023 14:32:31 -0400 Original-Received: from mout.web.de ([212.227.15.4]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1prNSn-0002ws-3j; Tue, 25 Apr 2023 14:32:30 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=s29768273; t=1682447544; i=michael_heerdegen@web.de; bh=cRuWE789pT1WuT60Cy6eZRZmL4Ppydbq0dZo6ZbO5rs=; h=X-UI-Sender-Class:From:To:Cc:Subject:In-Reply-To:References:Date; b=hSPrSFGs/6glG0+MyVnysf3d0v/S5mIElRrkUOi8UtVBurKsAy5csSnN0KYi3Uebc ECVstl5XH/r2JzvmDw7qegQMJ0ucbZmfaPQOceb35/Bx5DmYR9xr+6TdOC1cge6Lny ybSU5FyUj+KXo+ABgvNg6L7ocK9fG5O2GXvFsWDsXqBY7Kuy1nK5ij0P3ew01rQOwZ cNgyT0VfSl1KbEorly9ws2NxT4Ck6u9DzTqR1LdtBRtlKGX9DRn/YPygyzoZ0OXpSp oolK2l5piiuAdtxRdR81TnEQ7BF+Dz9qvh0h4HGCrtKomDVwU0isVzH6HGPi1K389k 4qXyMcjcRTefA== X-UI-Sender-Class: 814a7b36-bfc1-4dae-8640-3722d8ec6cd6 Original-Received: from drachen.dragon ([92.75.138.181]) by smtp.web.de (mrweb006 [213.165.67.108]) with ESMTPSA (Nemesis) id 1MpU1w-1qcocO00JY-00q6Gl; Tue, 25 Apr 2023 20:32:24 +0200 In-Reply-To: <83leifvqsz.fsf@gnu.org> (Eli Zaretskii's message of "Tue, 25 Apr 2023 20:02:04 +0300") X-Provags-ID: V03:K1:BsbCsHqZfHAlP5o6azHQqQyIi0/lAkgcx9bItTSRQfWpLpAEhgm gHKw3HxfUo9EIV6va/u/W4qmOi/Z9M4eCDo80lz/C7tAVG02oZwMl4cjHxIbEq+2zgKDESL Tou7eZFOEfXsyGcs78cIzUB7qupCsy916dGmOFwVWLQgPLwqrZk4XEGWC+cp/xXBZo1O4h2 p5TNenXg/DlsyREWuao/w== UI-OutboundReport: notjunk:1;M01:P0:XvrTeEYDlZU=;hTGjFBt/zmFeYw/munfblkjAGpV ctL6yGt4gElgTNgFwumFprb2/oruB15BI5VnkqG+pNIOKcbso72u14mrzxxV98NPQUEq875vW cZ9Y7HOfOKVOiMs8m7ytzs2QZy8SRYgJFeypZ2o1iDTzkguoQJJd8wDSNRd+LTZCRzjwIgYCl hVAPGi5NlYOle11M7le5nAHYAxyW9enUcKr4oYwS55PN0XJ/1VCd2QlfpxFdlm6edl9Q22CVF IFXLXo3NqY/uYbJlaDiBIVkgwy6tCpqFju5CbW8FZL51h74iefI6SYje8qdhX6tBx+GelnORP +/cUNl5sxQRH3zfwUW4wOsQSQ9vMux3z/ToldTRQx3vcLV0V5cNf2KhaedSeSIv4xxf58zm+d IYJ8vv8SQkRt78U0SCURGuzgdfsJzSHKRU3K3aFNH2CIhTnLeYvO/WNxasHA/3INJoQv59iG7 dAH3mBkHof0OJKCui1KgBnnykCkFpTT0NN+PHsu4hxyOzR8m4jk5o1DjyRKe+wMqx+LFDiuyd bS5+ZUNvprKU13rOziz//y/1tdx/pm7WToo7ZOn2LWtoZ1TYCDDL99REdB0zZInJXdSMPCoSu 9lJQiBdfb6f40DxRtEndbAGnoSwL/sil08MxykbX0O61mBgTJdkyDa/bBA0d1/1FYo0WJ508W XtWSdyNsPuxjQZ5UwMIRN+yK9WbTy707RlbiR6xc7y+uEg6va55s/L+XfsR9YNGhEGLsmTqf9 WSSzmFmaFFqxvRRnXqvjMIF7ppnGKt2H8zTBt5fd5vORQct568ktMystrtrZFYB2NTXwAiL/ Received-SPF: pass client-ip=212.227.15.4; envelope-from=michael_heerdegen@web.de; helo=mout.web.de X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 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-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:305667 Archived-At: Eli Zaretskii writes: > What is the purpose of requesting a custom function to actually > hide/unhide the headings, i.e. to know enough about the structure and > internal details of Outline mode to do its job? I guess the idea is to let the user decide _how_ to unhide a sublevel: reveal only one level, N levels, everything, only a certain leaf and its parents, etc. That's a useful feature. A nice semantics for the custom-function, although not backward compatible, that would still allow doing this, could be: if the non-nil return value of the custom-function is functionp, we call it. Other non-nil values mean we perform some default action, like showing the complete subbranch. Michael.