列表包的 Lua 语法

Question

我正在准备一些幻灯片Beamer，我刚刚发现这个listings包缺少该Lua语言的语法，而它本来可以满足我的要求。我该如何配置listings以突出显示 Lua？

Answer 1

你的问题前提是错误的。该listings包在文件中定义了不少于三种 Lua“方言”lstdvrs.dtx: [5.0]Lua、[5.1]Lua和[5.2]Lua。选择合适的。您可能想改变事物的外观，但您不必从头开始重新定义所有语法。

\documentclass{article}

\usepackage[T1]{fontenc}
\usepackage{inconsolata}
\usepackage{textcomp}
\usepackage{listings}

\lstdefinestyle{myLuastyle}
{
  language         = {[5.0]Lua},
  basicstyle       = \ttfamily,
  showstringspaces = false,
  upquote          = true,
}

\lstset{style=myLuastyle}

\begin{document}
\begin{lstlisting}
-- defines a factorial function
    function fact (n)
      if n == 0 then
        return 1
      else
        return n * fact(n-1)
      end
    end

    print("enter a number:")
    a = io.read("*number")        -- read a number
    print(fact(a))
\end{lstlisting}
\end{document}

Answer 2

方言5.0有定义：

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage{listings,inconsolata}

\begin{document}

\begin{lstlisting}[language={[5.0]Lua},basicstyle=\ttfamily\footnotesize,keywordstyle=\bfseries]
local words = io.open('hyphens-' .. tex.jobname .. '.txt', 'w');
local outchar = unicode.utf8.char
local function dumphyphens (head)
   local data = {}
   for v in node.traverse(head) do
       if v.id == node.id('glyph') then
         data[#data+1] = outchar(v.char);
       elseif v.id == node.id('disc') then
          data[#data+1] = '-'
       elseif v.id == node.id('glue') then
         data[#data+1] = outchar(32)
       elseif v.id == node.id('hlist') then
         data[#data+1] = dumphyphens(v.list)
       end
   end
   return table.concat(data)
end
callback.register ('hyphenate', function (head,tail)
   lang.hyphenate(head, tail) 
   words:write (dumphyphens(head) .. outchar(10))
   end)
\end{lstlisting}

\end{document}