))

    local hyphened_keyword = token(lexer.KEYWORD, lexer.word_match[[
      keyword-1 keyword-2 ... keyword-n
    ]])
    </code></pre>

    <p>In order to more easily separate or categorize keyword sets, you can use Lua
    line comments within keyword strings. Such comments will be ignored. For
    example:</p>

    <pre><code>
    local keyword = token(lexer.KEYWORD, lexer.word_match[[
      -- Version 1 keywords.
      keyword_11, keyword_12 ... keyword_1n
      -- Version 2 keywords.
      keyword_2