DidYouMean::TreeSpellChecker#ideas_to_paths

# File tmp/rubies/ruby-3.4.1/lib/did_you_mean/tree_spell_checker.rb, line 83
def ideas_to_paths(ideas, leaf, names, path)
  if ideas.empty?
    nil
  elsif names.include?(leaf)
    ["#{path}#{separator}#{leaf}"]
  else
    ideas.map {|str| "#{path}#{separator}#{str}" }
  end
end