tgt = PathBuf::from(&env::args().nth(3).unwrap());
}
+ // `_book` directory may already exist from previous runs. Check and
+ // delete it if it exists.
+ for entry in try!(fs::read_dir(&cwd)) {
+ let path = try!(entry).path();
+ if path == tgt { try!(fs::remove_dir_all(&tgt)) }
+ }
try!(fs::create_dir(&tgt));
try!(File::create(&tgt.join("rust-book.css")).and_then(|mut f| {