I think you are seeing that the blocks are tangled in reverse. If I add a third arbitrary lang it comes in reverse.

If they are all the same language, they are in the right order. It looks like org collects by language, so your strategy won't work with org-babel tangle I guess.

On Tue, Feb 16, 2016 at 5:19 AM, Alan Schmitt <alan.schmitt@polytechnique.org> wrote:
#+BEGIN_SRC foob :tangle foo.ml
let x = 1
#+END_SRC

#+BEGIN_SRC fooa :tangle foo.ml
let x = 2
#+END_SRC



John

-----------------------------------
Professor John Kitchin 
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803