On Mon, May 16, 2016 at 8:38 PM Eric Abrahamsen <eric@ericabrahamsen.net>
wrote:

> Starting with emacs -Q, then adding the org-plus-contrib directory to
> load-path:
>

Are you installing both the git master version and org-plus-contrib? I do
not have org-plus-contrib in my load-path. The only org I have in the
load-path is the git master version. If you *are* installing both versions,
then that could probably explain the issue you are facing.


> M-x org-agenda
> t ;; all todos, an empty list of course
> /
> SPC
>
> And I get the error.
>

I tried that. But I don't get any error.

I took the original org-agenda-filter-make-matcher-tag-exp function from
the git master and added few debug statements as below:

(defun org-agenda-filter-make-matcher-tag-exp (tags op)
  "Return a form associated to tag-expression TAGS.
Build a form testing a line for agenda filter for
tag-expressions.  OP is an operator of type CHAR that allows the
function to set the right switches in the returned form."
  (message "arg tags: %S" tags)
  (message "arg op: %S" op)
  (let (form ret)
    ;; Any of the expressions can match if OP is +, all must match if
    ;; the operator is -.
    (dolist (x tags (cons (if (eq op ?-) 'and 'or) form))
      (let* ((tag (substring x 1))
             (f (cond
((string= "" tag) '(not tags))
((and (string-match-p "\\`{" tag) (string-match-p "}\\'" tag))
 ;; TAG is a regexp.
 (list 'org-match-any-p (substring tag 1 -1) 'tags))
(t (list 'member (downcase tag) 'tags)))))
        (message "in let, tag: %S" tag)
        (message "in let, f: %S" f)
(prog1
            (setq ret (push (if (eq op ?-) (list 'not f) f) form))
          (message "ret val: %S" ret))))))

Then when I do M-x org-agenda t / SPC, I get:

arg tags: ("+")
arg op: 43
in let, tag: ""
in let, f: (not tags)
ret val: ((not tags))

-- 

-- 
Kaushal Modi