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\documentclass[]{article}
\usepackage{lmodern}
\usepackage{amssymb,amsmath}
\usepackage{ifxetex,ifluatex}
\usepackage{fixltx2e} % provides \textsubscript
\ifnum 0\ifxetex 1\fi\ifluatex 1\fi=0 % if pdftex
  \usepackage[T1]{fontenc}
  \usepackage[utf8]{inputenc}
\else % if luatex or xelatex
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    \usepackage{mathspec}
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    \usepackage{fontspec}
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  \newcommand{\euro}{€}
\fi
% use upquote if available, for straight quotes in verbatim environments
\IfFileExists{upquote.sty}{\usepackage{upquote}}{}
% use microtype if available
\IfFileExists{microtype.sty}{%
\usepackage{microtype}
\UseMicrotypeSet[protrusion]{basicmath} % disable protrusion for tt fonts
}{}
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% Add ',fontsize=\small' for more characters per line
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\date{}

% Redefines (sub)paragraphs to behave more like sections
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\renewcommand{\paragraph}[1]{\oldparagraph{#1}\mbox{}}
\fi
\ifx\subparagraph\undefined\else
\let\oldsubparagraph\subparagraph
\renewcommand{\subparagraph}[1]{\oldsubparagraph{#1}\mbox{}}
\fi

\begin{document}

\section{lhs test}\label{lhs-test}

\texttt{unsplit} is an arrow that takes a pair of values and combines them to
return a single value:

\begin{Shaded}
\begin{Highlighting}[]
\OtherTok{unsplit ::} \NormalTok{(}\DataTypeTok{Arrow} \NormalTok{a) }\OtherTok{=>} \NormalTok{(b }\OtherTok{->} \NormalTok{c }\OtherTok{->} \NormalTok{d) }\OtherTok{->} \NormalTok{a (b, c) d}
\NormalTok{unsplit }\FunctionTok{=} \NormalTok{arr }\FunctionTok{.} \NormalTok{uncurry}
          \CommentTok{-- arr (\textbackslash{}op (x,y) -> x `op` y)}
\end{Highlighting}
\end{Shaded}

\texttt{(***)} combines two arrows into a new arrow by running the two arrows
on a pair of values (one arrow on the first item of the pair and one arrow on
the second item of the pair).

\begin{verbatim}
f *** g = first f >>> second g
\end{verbatim}

Block quote:

\begin{quote}
foo bar
\end{quote}

\end{document}