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
;; 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
(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")