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lstlean.tex

The file lstlean.tex contains /Lean/ style definitions for the listings package, which can be used to typeset Lean code in a Latex document. For more information, see the documentation for the listings package and the sample document sample.tex.

You need the following packages installed:

  • listings
  • inputenc
  • color

Because listings does not work well with unicode, the style replaces all unicode characters with Latex equivalents. Some of the replacment symbols require the amssymb package.

To use the style, all you need to do is include lstlean.tex in the same directory as your Latex source, and include the following preamble in your document:

\documentclass{article}

\usepackage[utf8x]{inputenc}
\usepackage{amssymb}

\usepackage{color}
\definecolor{keywordcolor}{rgb}{0.7, 0.1, 0.1}   % red
\definecolor{tacticcolor}{rgb}{0.1, 0.2, 0.6}    % blue
\definecolor{commentcolor}{rgb}{0.4, 0.4, 0.4}   % grey
\definecolor{symbolcolor}{rgb}{0.0, 0.1, 0.6}    % blue
\definecolor{sortcolor}{rgb}{0.1, 0.5, 0.1}      % green

\usepackage{listings}
\def\lstlanguagefiles{lstlean.tex}
\lstset{language=lean}

The inputenc package is needed to handle unicode input. Of course, you can set the colors any way you want. In your document, you can then in-line code with the \lstinline{...}, and add a code block with the \begin{lstlisting} ... \end{lstlisting} environment.

Note that if you use a unicode symbol that is not currently handled in lstlean.tex, you can simply add it to the list there, together with the Latex equivalent you would like to use.