+let ask_confirmation _ =
+ print_string "
+ You are trying to delete the whole standard library.
+ Since this may be a dangerous operation, you are asked to type
+
+ yes, I'm sure
+
+ verbatim and press enter.\n\n> ";
+ flush stdout;
+ let str = input_line stdin in
+ if str = "yes, I'm sure" then
+ begin
+ print_string "deletion in progess...\n";
+ flush stdout
+ end
+ else
+ begin
+ print_string "deletion cancelled.\n";
+ flush stdout;
+ exit 1
+ end
+;;
+