我想使用 LaTeX 制作一个目录，像这张图片一样，其中目录列表全部以大写字母显示：
所以我写了这个 LaTeX 代码：
%To make the sections in uppercase
\makeatletter
\patchcmd{\l@section}{#1}{\MakeUppercase{#1}}{}{}% Sections use UPPERCASE in ToC
\makeatother
这产生了一个奇怪的错误：
我不明白这个错误的含义，也不知道如何解决它。
有什么帮助吗？
编辑：这是我的完整代码：
\documentclass{article}
\usepackage{blindtext}
\usepackage[T1]{fontenc}
\usepackage{hyperref}
\usepackage{tocloft,etoolbox}
%To make the sections in uppercase
\makeatletter
\patchcmd{\l@section}{#1}{\MakeUppercase{#1}}{}{}% Sections use UPPERCASE in ToC
\makeatother
\begin{document}
\renewcommand\thesection{\arabic{section}}
%\renewcommand\tableofcontents{\MakeUppercase{tableofcontents}}
%To change the name of table of contents
\renewcommand\contentsname{\textbf{Table of Contents}}
%\MakeUppercase{\tableofcontents}
\tableofcontents
\section{Introduction}
This is the first section.
Lorem ipsum dolor sit amet, consectetuer adipiscing
elit. Etiam lobortisfacilisis sem. Nullam nec mi et
neque pharetra sollicitudin. Praesent imperdietmi nec ante.
Donec ullamcorper, felis non sodales...
\newpage
\section{Second Section}
Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
Etiam lobortis facilisissem. Nullam nec mi et neque pharetra
sollicitudin. Praesent imperdiet mi necante...
\end{document}
答案1
由于您已添加hyperref，需要进行微小的调整：
\documentclass{article}
\usepackage{blindtext}
\usepackage{tocloft,etoolbox}
\usepackage{hyperref}
%To make the sections in uppercase
\makeatletter
\patchcmd{\H@old@sect}{\fi #7}{\fi\texorpdfstring{\MakeUppercase{#7}}{#7}}{}{}% Sections use UPPERCASE in ToC
\makeatother
\begin{document}
%To change the name of table of contents
\renewcommand\contentsname{\textbf{Table of Contents}}
\tableofcontents
\section{Introduction}
This is the first section.
Lorem ipsum dolor sit amet, consectetuer adipiscing
elit. Etiam lobortisfacilisis sem. Nullam nec mi et
neque pharetra sollicitudin. Praesent imperdietmi nec ante.
Donec ullamcorper, felis non sodales...
\newpage
\section{Second Section}
Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
Etiam lobortis facilisissem. Nullam nec mi et neque pharetra
sollicitudin. Praesent imperdiet mi necante...
\end{document}