アレ。\documentclass{article} \usepackage{lisp-on-tex} \begin{document} \lispinterp{(\texprint ((\lambda (\sa) (\* \sa :6)) :7))}% OK \lispinterp{(\texprint ((\lambda (\sb) (\* \sb :6)) :7))}% ERROR! \end{document} 多分、\sb が「文字トーク…