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Date: Fri, 13 Apr 2012 15:37:00 -0000
From: Eli Zaretskii <eliz@gnu.org>
Subject: Re: RFC: add .dir-locals.el
In-reply-to: <87k41kzp1k.fsf@fleche.redhat.com>
To: Tom Tromey <tromey@redhat.com>
Cc: yao@codesourcery.com, gdb-patches@sourceware.org
Reply-to: Eli Zaretskii <eliz@gnu.org>
Message-id: <83iph33bgv.fsf@gnu.org>
References: <87bonj8aa0.fsf@fleche.redhat.com> <4F8614A8.6040800@codesourcery.com> <83bomw4vob.fsf@gnu.org> <87k41kzp1k.fsf@fleche.redhat.com>
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> From: Tom Tromey <tromey@redhat.com>
> Cc: Yao Qi <yao@codesourcery.com>, gdb-patches@sourceware.org
> Date: Thu, 12 Apr 2012 14:13:43 -0600
> 
> You can set a property on a symbol to make it safe in some situations.
> This would normally be done via a patch to Emacs, but one can also do it
> temporarily in .emacs or whatever.
> 
> In this case though, what symbol would you use?
> AFAIK you have to call font-lock-add-keywords to change font-locking.
> There is no local variable you can set.

As you discovered, there's safe-local-eval-forms, although it was only
introduced in Emacs 24.