def find_in_base_path(logical_path, base_path, &block)
        candidate = File.expand_path(logical_path, base_path)
        dirname, basename = File.split(candidate)
        match(dirname, basename, &block) if paths_contain?(dirname)
      end
def find_in_base_path(logical_path, base_path, &block)
        candidate = File.expand_path(logical_path, base_path)
        dirname, basename = File.split(candidate)
        match(dirname, basename, &block) if paths_contain?(dirname)
      end
Finds relative logical path, `../test/test_trail`. Requires a
 `base_path` for reference.