From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Kaushal Modi Newsgroups: gmane.emacs.help Subject: Re: How to find when a feature was introduced Date: Fri, 08 Jul 2016 04:41:54 +0000 Message-ID: References: NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: ger.gmane.org 1467952959 1036 80.91.229.3 (8 Jul 2016 04:42:39 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 8 Jul 2016 04:42:39 +0000 (UTC) To: Rusi , help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Jul 08 06:42:38 2016 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1bLNcc-0007I3-6S for geh-help-gnu-emacs@m.gmane.org; Fri, 08 Jul 2016 06:42:38 +0200 Original-Received: from localhost ([::1]:43526 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bLNcb-0005OB-9x for geh-help-gnu-emacs@m.gmane.org; Fri, 08 Jul 2016 00:42:37 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:55570) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bLNc6-0005Nt-MU for help-gnu-emacs@gnu.org; Fri, 08 Jul 2016 00:42:07 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bLNc5-0007gt-Q2 for help-gnu-emacs@gnu.org; Fri, 08 Jul 2016 00:42:06 -0400 Original-Received: from mail-oi0-x244.google.com ([2607:f8b0:4003:c06::244]:34113) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bLNc5-0007gp-L3 for help-gnu-emacs@gnu.org; Fri, 08 Jul 2016 00:42:05 -0400 Original-Received: by mail-oi0-x244.google.com with SMTP id s17so5817756oih.1 for ; Thu, 07 Jul 2016 21:42:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=bntdNCJVXq3tb2xbBGGAlFI+v9UuJifLQ41HoiyxMCM=; b=N2cENcPBFZFo7I8xKTLapZW4kMgTU1c8fdoMF6zMbAGKzZjl/y4WaSQk9l1oKVMrXH 5/i0cajN5v8qbLKymBR8gXAq8XRXdU+tjJYnwxZ5XTnS6J1l8X1kEUm7h8UmjWk8JxWI Y15COeOWpkb1vfGKiic9KkPmcH2a+C65onKUBHZTaZcYndFao+HUlTmO/esU8aDZleIj PWXL4MHl9tjf/qyjTGoQ0+7+B0Ui40H2yczOaB/97wxtjUrF8JJWnVkaUphSXRKbSnLQ S2Astc4XRLYbXMkZJ/WmFlS3hP8Hne+f2GEIAH3QTRxByFv4RaFYM3kL9ojbEYceQuXE 9Csg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=bntdNCJVXq3tb2xbBGGAlFI+v9UuJifLQ41HoiyxMCM=; b=fGAYKMD8KzUKfOdw4gB01ODybjHOsOsT5KMtr7pF1XVKIyHZfl8rIeSDB7I/hpO79x E1J5jz87Vr8tkJi3f1AS7px4cZ94Uua7i+/n7hS3slH9BwZKh8vXgP8bw+si2nsyDUyj onw2U9N+UfwN5nf0hAcIltcxYFEkyswMDCf40OFiaMjLp/bSiEM6/fUBPREBqu/+JVLL mA1a9sZpfeM/A983wL/oslJb7KAk8lRpZ4iUGV4/acpLC6EWZmZQ1qoFK88G6uSVuUw7 tsaNuBEjwWa5ycy/dzx1510hlW/vh8vifsOyySiC5BbY5QpXkyk+FsU6JBT4ePFkJR7X kNfA== X-Gm-Message-State: ALyK8tIYQ3XUMBkxiBkbqQNyTmSywo7hirCz8JebZhoYGwW74o+XlK91zOr20EpDregKXV9HjeTH7sNTMJPUwg== X-Received: by 10.157.29.106 with SMTP id m97mr2249627otm.164.1467952925046; Thu, 07 Jul 2016 21:42:05 -0700 (PDT) In-Reply-To: X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2607:f8b0:4003:c06::244 X-Content-Filtered-By: Mailman/MimeDel 2.1.21 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.org gmane.emacs.help:110722 Archived-At: For not know a better way, I would just grep the NEWS* files in the etc/ directory for the function/variable name. For this particular example, the info is in NEWS.24 file. === * Lisp Changes in Emacs 24.4 ... ** New macro `with-eval-after-load'. This is like the old `eval-after-load', but better behaved. === So this macro was introduced in emacs 24.4. On Fri, Jul 8, 2016 at 12:30 AM Rusi wrote: > Student sent me this > > Symbol's function definition is void: with-eval-after-load > > Figured this came from a slightly oldish ubuntu > > Then found the with-eval-after-load in gnu-apl-mode > > So now I need to tell my students gnu-apl-mode will not run in emacsen > less than > version X > > How to find out X? > -- -- Kaushal Modi