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bug#4706: customize and aliaes

From: Glenn Morris
Subject: bug#4706: customize and aliaes
Date: Thu, 15 Oct 2009 02:14:22 -0400
User-agent: Gnus (www.gnus.org), GNU Emacs (www.gnu.org/software/emacs/)

Stefan Monnier wrote:

>> Perhaps if new_alias has a 'saved-value property, and base_variable
>> does not, Fdefvaralias could copy the property to base_variable?
> I think that extending defvaralias this way would be wrong, but I think it
> would fit just fine in define-obsolete-variable-alias.

What then to do about non-obsolete aliases to defcustoms?

Such things are used eg in find-file, emacs-lisp/warnings.el, etc, and
probably outside of Emacs.

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