Location of () and simple expressions not retained correctly when printing.

echo 'if (Sys.file_exists(raw_path)) {
 /* The directory exists, stop recursing but check error cases */
 if (Sys.is_directory(raw_path)) {
   /* All good */
   "asdf";
 } else {
  ()
  }
};

Shows:

if (Sys.file_exists(raw_path)) {
  /* The directory exists, stop recursing but check error cases */
  if (Sys.is_directory(raw_path)) {
    "asdf";
    /* All good */
  } else {
    ();
  };
};

You can replace the string "asdf" with () or 45 and it still has the same issue.
I think the location of constants isn't getting correctly recorded.

No source file, test, or entry point is named. Reproduce the supplied formatter example and trace how locations for nested simple expressions are recorded and used during printing; done means the output preserves the original placement of (), constants, and comments in this example and its variants.