···102102/// Guess compressor/action from the two filenames
103103/// The compressor may already be given
104104fn guess_from_filenames(
105105- input: &Vec<PathBuf>,
105105+ input: &[PathBuf],
106106 output: &Path,
107107 compressor: Option<Box<dyn Compressor>>,
108108) -> (Option<Box<dyn Compressor>>, Action) {