% !Mode:: "TeX:DE:UTF-8:Main" \documentclass{article} \usepackage{amsmath} \usepackage[ngerman]{babel} \usepackage{tagpdf,listings} \makeatletter %\def\lst@outputspace{\pdffakespace\ } %not so good % this here works fine with luatex, if the font has a space glyph: \def\lst@visiblespace{\lst@ttfamily{\char32}{\char32}} % with pdftex this could work %\def\lst@visiblespace{\lst@ttfamily{\pdffakespace\ }{\pdffakespace\ }} \tagpdfsetup{activate-all,uncompress,interwordspace=on,show-spaces,log=v} \begin{document}\pagestyle{empty} \tagstructbegin{tag=Document} \tagmcbegin{tag=P} \begin{lstlisting}[showspaces] aaa aaa xxxx \end{lstlisting} \tagmcend \tagstructend \end{document}