From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Pascal J. Bourguignon" Newsgroups: gmane.emacs.help Subject: Re: Local variables list Date: Thu, 02 Oct 2014 14:25:54 +0200 Organization: Informatimago Message-ID: <87lhoypsj1.fsf@kuiper.lan.informatimago.com> References: NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1412253023 7062 80.91.229.3 (2 Oct 2014 12:30:23 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 2 Oct 2014 12:30:23 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Oct 02 14:30:18 2014 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 1XZfWT-0000gW-UQ for geh-help-gnu-emacs@m.gmane.org; Thu, 02 Oct 2014 14:30:18 +0200 Original-Received: from localhost ([::1]:33822 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XZfWT-0005cf-I0 for geh-help-gnu-emacs@m.gmane.org; Thu, 02 Oct 2014 08:30:17 -0400 Original-Path: usenet.stanford.edu!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 64 Original-X-Trace: individual.net m3jSgVN9Sbq2JwZdxTKt6gWGIwE39yG6qD+esGetaqjYUgO0dX Cancel-Lock: sha1:NTVkODY1NGYwYWIxOTAwMTNhMWU5Nzg2MGMyZDgxMzE0YjhhN2Q3ZQ== sha1:gBPrv19SbHUqkfwS0smgT6FQAUc= Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwAQMAAABtzGvEAAAABlBMVEUAAAD///+l2Z/dAAAA oElEQVR4nK3OsRHCMAwF0O8YQufUNIQRGIAja9CxSA55AxZgFO4coMgYrEDDQZWPIlNAjwq9 033pbOBPtbXuB6PKNBn5gZkhGa86Z4x2wE67O+06WxGD/HCOGR0deY3f9Ijwwt7rNGNf6Oac l/GuZTF1wFGKiYYHKSFAkjIo1b6sCYS1sVmFhhhahKQssRjRT90ITWUk6vvK3RsPGs+M1RuR mV+hO/VvFAAAAABJRU5ErkJggg== X-Accept-Language: fr, es, en User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) Original-Xref: usenet.stanford.edu gnu.emacs.help:207952 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 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-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:100227 Archived-At: Dieter Britz writes: > For some files, when I start emacs, I get a warning > something like "The local variables list for > contains values that may not be safe..." (I was not able > to copy/paste so am citing from memory). I then answer > "yes" and I get in, but what does this mean? What can I > do about it? The file local variables are defined either on one of the first two lines, between "-*-" and "-*-", or in the last 512 bytes, between "\nLocal Variable:\n" and "\nEnd:\n". Some local variables are "safe" and/or have "safe" values. For example: ;; -*- mode:lisp; coding:utf-8; -*- on the first line define two variables, mode and coding to be set to lisp and utf-8 which are all safe. Some other local variables or values are not safe. For example: Local Variable: post-command-hook: ((lambda () (do-some-virus-propagation))) End: wouldn't be safe, and neither would: Local Variable: post-command-hook: ((lambda () (shell "rm -rf /"))) End: It is to protect you from such files, that emacs warns you when it detect something strange in file local variables. You should not answer yes blindly, you should check those variables, and convince yourself that they are safe, before answering yes. The "*Local Variables*" buffer gives you the list of local variables, indicating those that are unsafe: -----(*Local Variables*)------------------------------------------------ The local variables list in test-file contains varibles that are risk (**). Do you want to apply it? You can type y -- to apply the local variable list. n -- to ignore the local variables list. mode : text ** post-command-hook : ((lambda nil (message "hi"))) ------------------------------------------------------------------------ Here you can see that post-command-hook looks safe (but it will erase the current post-command-hook, so you might still want to answer n (and then remove it from the file). -- __Pascal Bourguignon__ http://www.informatimago.com/ “The factory of the future will have only two employees, a man and a dog. The man will be there to feed the dog. The dog will be there to keep the man from touching the equipment.” -- Carl Bass CEO Autodesk