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