Re: Bug? org-assert-version does not prevent mixed install

[Max Nikulin]

On 18/12/2022 20:04, Ihor Radchenko wrote:
> Max Nikulin writes:
>
> > It is possible to convert the error to a better one by checking if
> > `org-assert-version' is bound in org.el.
>
> We might do something like
>
> (eval-and-compile (org-assert-version))

This will give obscure error during compiling since `org-assert-version' 
is not defined.

Unsure what will happen during load of the org.el file since org.elc is 
not produced. Perhaps the same cryptic error, but I can not explain it.

My idea (unchecked)

;; Remove when support of Emacs-29 is dropped.
(unless (fboundp 'org-assert-version)
  (error "Org is compiled or loaded while older version loaded already. 
 Please, ensure that no other org versions are loaded and recompile."))