in src/main.rs [606:629]
fn run_fast(
regex: &Regex,
matcher: &RegexMatcher,
subst: &str,
dirs: Vec<&str>,
file_set: Option<FileSet>,
hidden: bool,
print_changed_files: bool,
) -> Result<()> {
Fastmod::run_fast_impl(
regex,
matcher,
subst,
dirs,
file_set,
hidden,
if print_changed_files {
Some(Vec::new())
} else {
None
},
None,
)
}