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From: Lars Ingebrigtsen <larsi@gnus.org>
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Subject: bug#14894: 24.3.50; :enable or :visible for encryption menu items
Date: Fri, 07 Feb 2014 22:07:22 -0800
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Drew Adams <drew.adams@oracle.com> writes:

> I know nothing about file encryption, so feel free to close this if it
> is not relevant.
>
> I'm guessing that it makes no sense to try to decrypt a file that is not
> encrypted, and that it makes no sense to encrypt a file that is already
> encrypted.  Perhaps similarly for verifying or signing.
>
> If that is so, then the menu items should have :enable or :visible to
> reflect these conditions.

I don't think that's possible for dired to know.  The user may want to
encrypt things twice, and the user may want to decrypt a file that dired
doesn't know is encrypted.

-- 
(domestic pets only, the antidote for overdose, milk.)
  bloggy blog http://lars.ingebrigtsen.no/