>  > I would like do to something like this :
>  > 
>  > let sprint msg =
>  >     print_endline ("BEGIN: "^(sprintf msg))
>  > 
>  > without of course loosing the ability of having variable number of
>  > parameters in my "msg".
>  > Is that kind of thing possible ?
> 
> You can do the following :
> 
> # open Printf;;
> # let print x = printf "BEGIN: "; printf x;;               

I just found something quite funny :

let print x =
    printf "BEGIN";
    printf x;
    flush stdout

print "test";;
print "%d" 10; (** TOO MUCH ARGS **)

============

let print x =
    printf "BEGIN";
    let r = printf x in
    flush stdout;
    r

print "test";
print "%d" 10; (** WORKING **)

NC

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