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Fix Eldoc problem when loading on Emacs 26.3

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When defining the obsolete variable alias for old
eldoc-documentation-function (which now points to the newer
eldoc-documentation-strategy), one gets the error "don't know how to
make a localized vareiable an alias".  I'm not sure, but I suspect
this is because Eldoc is preloaded in Emacs 26.3 and the
eldoc-documentation-function variable is already set locally by some
Elisp buffer.

Uninterning the symbol shortly before defining the alias seems to fix
it.

* lisp/emacs-lisp/eldoc.el (eldoc-documentation-function):
Unintern on load.
(Version): Bump to 1.3.0
This commit is contained in:
João Távora 2020-07-10 01:47:10 +01:00
parent c86f3fe0d0
commit 9ade7ea7b7
1 changed files with 4 additions and 1 deletions
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5
lisp/emacs-lisp/eldoc.el
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@ -5,7 +5,7 @@
;; Author: Noah Friedman <friedman@splode.com>
;; Keywords: extensions
;; Created: 1995-10-06
;; Version: 1.2.0
;; Version: 1.3.0
;; Package-Requires: ((emacs "26.3"))
;; This is a GNU ELPA :core package. Avoid functionality that is not
@ -535,6 +535,9 @@ Meant as a value for `eldoc-documentation-strategy'."
(if (stringp str) (funcall callback str))
nil))))
;; FIXME: The unintern fixes "don't know how to make a localized
;; variable an alias".
(unintern 'eldoc-documentation-function)
(define-obsolete-variable-alias 'eldoc-documentation-function
'eldoc-documentation-strategy "eldoc-1.1.0")