From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: yary Newsgroups: gmane.emacs.bugs Subject: bug#15658: 24.1; (wishlist) Easy way to make a file-local variable also permanent-local Date: Tue, 10 May 2022 15:54:00 -0400 Message-ID: References: <87lev9fmia.fsf@gnus.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="16583"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 15658@debbugs.gnu.org To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Tue May 10 21:55:29 2022 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 1noVxA-00045c-UA for geb-bug-gnu-emacs@m.gmane-mx.org; Tue, 10 May 2022 21:55:28 +0200 Original-Received: from localhost ([::1]:38516 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1noVx9-0002CY-Dy for geb-bug-gnu-emacs@m.gmane-mx.org; 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So it might already work as I wanted it, and my wants have changed! OK to close this. -y On Tue, May 10, 2022 at 11:14 AM Lars Ingebrigtsen wrote: > > yary writes: > > > There are occasional needs to preserve buffer-local variables across > > major-mode changes. In the specific case of directory-local variables, > > an automated solution looks to be feasible, see "bug#15577: 24.3; > > dir-local variables not applied when switching major-mode" > > > > File-local variables on the other hand are not as easy to categorize as > > to their intent- for a particular mode, vs the file contents in general. > > > > I propose adding `permanent' as another special "variable name" (along > > the lines of `mode', `eval', `coding', and `unibyte') to let people > > mark the file variables they want to remain between mode changes. For > > example: > > > > ; mode: Lisp > > ; fill-column: 75 > > ; comment-column: 50 > > ; permanent: fill-column tab-width > > > > would set & keep fill-column at 75 between mode changes, and would > > preserve between major-mode switches any changes to tab-width. > > (I'm going through old bug reports that unfortunately weren't resolved > at the time.) > > With the following: > > ;; Local variables: > ;; foo-var: t > ;; end: > > foo-var is set whenever I change the major mode. Has the behaviour > changed here since Emacs 24.1? (The earliest Emacs I have is Emacs > 25.1.) > > -- > (domestic pets only, the antidote for overdose, milk.) > bloggy blog: http://lars.ingebrigtsen.no