Hi Aaron,
Aaron Ecay wrote:
> [...]
> babel needs to fetch 30 properties per source block. Indeed, this is
> marked “deprecated” in the source, in favor of a system where there is
> only one header arg. This has been marked deprecated for almost exactly
> a year in the code (Achim’s commit 90b16870 of 2013-06-23), but I don’t
> know of any prominent announcement of the deprecation.
I neither was aware of such a deprecation.
Are you talking of the comment in function
`org-babel-params-from-properties' (in ob-core.el)?
Thought, I can't parse it yet the way you do -- without understanding
much more of that code, as the comments differ in "at point of
definition" vs "at point of call":
;; DEPRECATED header arguments specified as separate property at
;; point of definition
;; header arguments specified with the header-args property at
;; point of call
What you're talking about is for specifying header arguments in
a subtree, anyway always at the same point:
> [...] You’d then have to update your file:
>
> :PROPERTIES:
> :exports: none
> :tangle: no
> :END:
>
> becomes
>
> :PROPERTIES:
> :header-args: :exports none :tangle no
> :END:
>
> The new system is also a bit inferior, in that it doesn’t allow header
> arg inheritance as easily. So with the one-prop-per-arg system the
> following works as expected:
>
> * foo
> :PROPERTIES:
> :exports: none
> :END:
> ** bar
> :PROPERTIES:
> :tangle: no
> :END:
>
> (src block here)
>
> On the other hand, in the new system there’s no way to specify some
> header args at foo and some at bar; the lowest header-args property
> wins. (At least as far as I can see)
Maybe the "+" mechanism for concatenating property strings would help
here?
Best regards,
Seb
--
Sebastien Vauban
