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From: Phil Sainty <psainty@orcon.net.nz>
To: cdelia@dc.uba.ar
Cc: Emacs-devel <emacs-devel-bounces+psainty=orcon.net.nz@gnu.org>,
	emacs-devel@gnu.org
Subject: Re: mark .dir-locals.el buffer or file as safe instead of variables as safe
Date: Wed, 27 Jun 2018 16:24:24 +1200	[thread overview]
Message-ID: <037e51edfe70cb450157d1fb6f0ace0d@webmail.orcon.net.nz> (raw)
In-Reply-To: <d0ebecade06de0dcdf602bc66d0fb147@dc.uba.ar>

On 2018-06-27 12:14, cdelia@dc.uba.ar wrote:
> So, if a mark foo-variable, on trusted land to get rid of confirmation
> and just happen to open something on hell itself, by accident or
> glory, instead of a peak of dark magic knowledge I could let all hell
> break lose.

The trust is not for a variable regardless of its value; it is for a
*specific value* of a variable.

If "hell itself" wanted to set the *same* value that was confirmed on
"trusted land" then Emacs will be happy with that; but if a different
value is used then the user will be prompted to confirm (or not) the
new value as trusted.

A variable can be defined to be a "safe-local-variable" such that a
specified predicate function can validate file-local values, and
automatically trust valid values without bothering the user. Otherwise
the user needs to confirm each distinct value independently.


-Phil




  parent reply	other threads:[~2018-06-27  4:24 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-27  0:14 mark .dir-locals.el buffer or file as safe instead of variables as safe cdelia
2018-06-27  2:33 ` Eli Zaretskii
2018-06-27  4:24 ` Phil Sainty [this message]
2018-06-27  4:34   ` Phil Sainty
2018-06-27  6:36     ` Phil Sainty

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