lhs2tex-1.12: doc/Indent2In.lhs
%include verbatim.fmt
\begingroup
\let\origtt=\tt
\def\tt#1{\origtt \makebox[0pt]{\phantom{X}}}
\begin{code}
unionBy :: (a -> a -> Bool) -> [a] -> [a] -> [a]
unionBy eq xs ys = xs ++ foldl (flip (deleteBy eq))
(nubBy eq ys)
\end{code}
\endgroup