master 9ade7ea: Fix Eldoc problem when loading on Emacs 26.3

[João Távora]

branch: master
commit 9ade7ea7b77ec40c16deb4dff139ce7127a703e2
Author: João Távora <joaotavora@gmail.com>
Commit: João Távora <joaotavora@gmail.com>

    Fix Eldoc problem when loading on Emacs 26.3
    
    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
---
 lisp/emacs-lisp/eldoc.el | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lisp/emacs-lisp/eldoc.el b/lisp/emacs-lisp/eldoc.el
index 7c8e0e7..6420c5c 100644
--- a/lisp/emacs-lisp/eldoc.el
+++ b/lisp/emacs-lisp/eldoc.el
@@ -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")