RFE : a tuareg-like environment

[ysalmon]

I am just discovering learn-ocaml and even without the exercise-and-test feature, I fond it gives a relatively good and simple code editor and REPL for OCaml. However one has to be in exercise mode for this, as the "toplevel" feature is, understandably, a simple toplevel.

So I suggest the following :

• create a "free range" code editor and REPL interface (in fact, a pseudo-exercise without any objective would suffice) ;
• upgrade it with the ability to send to OCaml REPL only a portion of the code (like tuareg's C-c C-e), using ;; for delimiters (to avoid complex parsing to determine the enclosing phrase under the text cursor) ;
• add the possibility to upload a .ml file into the editor.