I was debugguing a regular-expression and noticed that \" in a string
remained as-is and this somehow seems linked to my quotation problem :
  # let a="\"";;
  val a : string = "\""

  # let a="\034";;
  val a : string = "\""

Is it expected behaviour? :o
I can't get such a quote in any string.

(self-compiled ocaml 3.09.3 under mingw+msys)