无法在 \titlecap 中使用 \MakeLowercase？

Question

这是最小代码

\documentclass[a4paper]{article}
\usepackage[latin1]{inputenc}
\usepackage{xparse}
\usepackage{titlecaps}

\begin{document}
\MakeLowercase{LAtex foR doCumenT seTTing} \\
\titlecap{LAtex foR doCumenT seTTing}\\
\titlecap{\MakeLowercase{LAtex foR doCumenT seTTing}}
\end{document}

Answer 1

一种可能性是……这里，\caselower将其结果保存到 中\thestring。您可以使用 悄悄地完成此操作\caselower[q]{<string to process>}。

\documentclass[a4paper]{article}
\usepackage[latin1]{inputenc}
%\usepackage{xparse}
\usepackage{titlecaps, stringstrings}

\begin{document}
\caselower{LAtex foR doCumenT seTTing} \\
\titlecap{LAtex foR doCumenT seTTing}\\
\expandafter\titlecap\expandafter{\thestring}
\end{document}

因此，直接得到结果

\documentclass[a4paper]{article}
\usepackage[latin1]{inputenc}
%\usepackage{xparse}
\usepackage{titlecaps, stringstrings}

\begin{document}
\caselower[q]{LAtex foR doCumenT seTTing} 
\expandafter\titlecap\expandafter{\thestring}
\end{document}

Answer 2

你可以这样做

\documentclass[a4paper]{article}
\usepackage[latin1]{inputenc}
\usepackage{xparse}
\usepackage{titlecaps}

\ExplSyntaxOn
\NewDocumentCommand{\xtitlecap}{O{}m}
 {
  \teron_xtitlecap:nf { #1 } { \tl_lower_case:n { #2 } }
 }
\cs_new_protected:Nn \teron_xtitlecap:nn
 {
  \titlecap[#1]{#2}
 }
\cs_generate_variant:Nn \teron_xtitlecap:nn { nf }
\ExplSyntaxOff

\begin{document}

\MakeLowercase{LAtex foR doCumenT seTTing}

\xtitlecap{LAtex foR doCumenT seTTing}

\end{document}