Hi Julien,
I just pushed up a small commit which will allow you to pull property
values from a headline by embedding a small amount of elisp into
your :var header argument. In this way the `org-entry-get' function can
be used with our existing tangle-then-load elisp machinery.
Best -- Eric
,[from the commit message]
| babel: variable references which look like lisp forms are now evaluated
|
| for example, the following simple example
| #+begin_src emacs-lisp :var two=(+ 1 1)
| (sqrt two)
| #+end_src
|
| #+results:
| : 1.4142135623730951
|
| Or this more interesting usage, which pulls variable values from
| headline properties
| *** example headline w/property
| :PROPERTIES:
| :special: 89
| :last-name: schulte
| :END:
|
| #+begin_src emacs-lisp :var special=(string-to-number (org-entry-get
nil special t))
| (+ special 1)
| #+end_src
|
| #+results:
| : 90
|
| #+begin_src emacs-lisp :var last-name=(org-entry-get nil last-name
t))
| (message hello %s last-name)
| #+end_src
|
| #+results:
| : hello schulte
`
Julien Fantin julien.fan...@gmail.com writes:
I've been using this init file to load my org-mode-contained emacs
configuration :
;;; init.el --- Where all the magic begins
;;
;; This file loads both
;; - Org-mode : http://orgmode.org/ and
;; - Org-babel:
http://orgmode.org/worg/org-contrib/babel/org-babel.php#library-of-babel
;;
;; It then loads the rest of our Emacs initialization from Emacs lisp
;; embedded in literate Org-mode files.
;; Load up Org Mode and Org Babel for elisp embedded in Org Mode files
(setq dotfiles-dir (file-name-directory (or (buffer-file-name)
load-file-name)))
(let* ((org-dir (expand-file-name
lisp (expand-file-name
org-mode (expand-file-name
elisp dotfiles-dir
(org-contrib-dir (expand-file-name
lisp (expand-file-name
contrib (expand-file-name
.. org-dir
(load-path (append (list org-dir org-contrib-dir)
(or load-path nil
;; load up Org-mode and Org-babel
(require 'org-install)
(require 'org-babel-init)
(require 'org-babel-emacs-lisp))
;; load up all literate org-mode files in this directory
(mapc 'org-babel-load-file (directory-files dotfiles-dir t \\.org$))
;;; init.el ends here
It's been working nicely until I tried to clean things up by setting some
commonly used variables in properties drawers, and access them from
emacs-lisp src blocks.
The following illustrates my intent, and will behave as expected with
org-babel-execute-buffer, but fails when it is loaded by org-babel-load-file :
* Configuration
:PROPERTIES:
:ELISP-DIR:~/emacs.d/elisp/
:END:
** Load Path
#+begin_src emacs-lisp
(add-to-list 'load-path (org-entry-get nil ELISP-DIR t))
#+end_src
From my understanding, orb-babel-load-file tangles then loads the file,
losing the variables in the process.
I've been using this function to get the expected behaviour, but the default
somewhat breaks expectations, don't you think ?
(defun
ba/org-babel-load-file (file) (with-temp-buffer (insert-file-contents
file) (org-mode) (org-babel-execute-buffer)))
Or, is there a cleaner way to achieve this ?
Regards,
julien
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