class Rails::Generators::AppBase::GemfileEntry

def to_s
  [
    (comment.gsub(/^/, "# ").chomp + "\n" if comment),
    ("# " if commented_out),
    "gem \"#{name}\"",
    *Array(version).map { |constraint| ", \"#{constraint}\"" },
    *options.map { |key, value| ", #{key}: #{value.inspect}" },
  ].compact.join
end