Function syntex_syntax2::util::lev_distance::find_best_match_for_name

pub fn find_best_match_for_name<'a, T>(
    iter_names: T, 
    lookup: &str, 
    dist: Option<usize>
) -> Option<Symbol> where
    T: Iterator<Item = &'a Symbol>, 

To find the best match for a given string from an iterator of names As a loose rule to avoid the obviously incorrect suggestions, it takes an optional limit for the maximum allowable edit distance, which defaults to one-third of the given word