Hi Christophe, I'm still using Org 8.2.4 from Ubuntu Trusty (I'll upgrade Org one of these days...), and I tested your code, and it seems to work properly. For example, testing on this tree:
#+BEGIN_SRC org * Test tree ** TODO Parent todo DEADLINE: <2016-04-15 ven.> :PROPERTIES: :ParentProp: ValPar :END: potatoes *** NEXT SubAction :PROPERTIES: :SubProp: Val :END: sandwiches #+END_SRC With point anywhere in the "SubAction" entry, either on the heading line or after it, when I eval ~(org-entry-get-with-inheritance "DEADLINE")~, I get "2016-04-15 ven." But in Org 8.3.4, it fails, just as you said. I think I see why: In Org 8.2.4, =org-entry-get-with-inheritance= has this code: #+BEGIN_SRC elisp (if (member property org-special-properties) ;; We need a special property. Use `org-entry-properties' ;; to retrieve it, but specify the wanted property (cdr (assoc property (org-entry-properties nil 'special property))) ... #+END_SRC That finds properties like =DEADLINE= that are not inside property drawers. But in Org 8.3.4, =org-entry-get-with-inheritance= calls =org-property--local-values=, which calls =org-get-property-block=, which returns =nil=, and it doesn't check =org-special-properties= at all, so it seems to only search inside =:PROPERTIES:= drawers. I think it was caused by commit 188bae9 "Fix property inheritance with extended values" from 3 Jul 2015.