let read_line () = try Some (read_line ()) with End_of_file -> None let rec initial last_was_empty = match read_line () with | None -> () | Some "(* begin thide *)" -> thide last_was_empty | Some "" -> if not (last_was_empty) then print_newline (); initial true | Some line -> let idx = try Some (String.index line '(') with Not_found -> None in match idx with | Some idx -> if String.length line > idx+1 && line.[idx+1] = '*' && not (String.length line > idx+4 && String.sub line (idx+2) 3 = " EX") then if line.[String.length line - 2] = '*' && line.[String.length line - 1] = ')' then initial last_was_empty else comment 1 last_was_empty else begin print_endline line; initial false end | None -> print_endline line; initial false and comment count last_was_empty = match read_line () with | None -> () | Some line -> if String.length line >= 2 && line.[0] = '(' && line.[1] = '*' then if String.length line >= 2 && line.[String.length line - 2] = '*' && line.[String.length line - 1] = ')' then comment count last_was_empty else comment (count+1) last_was_empty else if String.length line >= 2 && line.[String.length line - 2] = '*' && line.[String.length line - 1] = ')' then if try let idx = String.index line '(' in idx < String.length line - 1 && line.[idx + 1] = '*' with Not_found -> false then comment count last_was_empty else if count = 1 then initial last_was_empty else comment (count-1) last_was_empty else comment count last_was_empty and thide last_was_empty = match read_line () with | None -> () | Some "(* end thide *)" -> initial last_was_empty | Some _ -> thide last_was_empty let () = initial false