nil no longer allowed in load-path?

nil no longer allowed in load-path?

[Ulrich Mueller]

While investigating why ECB wouldn't compile any more with recent
Emacs versions, I stumbled upon this:

   $ emacs -Q --batch --eval "(add-to-list 'load-path nil)"
   Wrong type argument: stringp, nil

This happens both with 24.4 and the trunk version, but not with 24.3.
The documentation for load-path seems to say that nil is legal as an
element.

Feature or bug?

Ulrich

Re: nil no longer allowed in load-path?

[Ulrich Mueller]

>>>>> On Sun, 9 Nov 2014, Ulrich Mueller wrote:

>    $ emacs -Q --batch --eval "(add-to-list 'load-path nil)"
>    Wrong type argument: stringp, nil

Looks like a missing test in startup.el, function command-line:

--- emacs-24.4/lisp/startup.el~
+++ emacs-24.4/lisp/startup.el
@@ -1319,6 +1319,7 @@
   (let (warned)
     (dolist (dir load-path)
       (and (not warned)
+	   (stringp dir)
 	   (string-match-p "/[._]emacs\\.d/?\\'" dir)
 	   (string-equal (file-name-as-directory (expand-file-name dir))
 			 (expand-file-name user-emacs-directory))

Re: nil no longer allowed in load-path?

[Glenn Morris]

Fixed.

Please report bugs and suspected bugs to bug-gnu-emacs, not emacs-devel.