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wtsnjp/reverse.tex

Created July 17, 2017 08:00
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reverse.tex
%#!latex
\documentclass{article}
\makeatletter
\def\reverse#1{\@reverse#1\relax\@nil\@empty}
\def\@reverse#1#2\@nil#3{%
\ifx#1\relax#3\else
\@reverse#2\@nil{#1#3}%
\fi}
\edef\abcde{\reverse{abcde}}
\makeatother
\begin{document}
\abcde
\end{document}
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