我正在使用该类book，并且有几个附录。这些附录的标题为“附录 A”、“附录 B”等，实际上所有字母都是小写字母。为了使标签 (A、B、...) 变为小写字母，我使用了\renewcommand{\thechapter}{{\normalfont\scshape \alph{chapter}}}。虽然这样做效果很好，但它也会将目录中的附录标签更改为小写字母，而这并不是我想要的。我不知道如何避免这种情况。有没有人知道一个包或一个技巧，可以让标签 A、B 等在目录中显示为正常大写字母？
以下重现了该问题：
\documentclass[11pt,b5paper,twoside,dvipsnames]{book}
\RequirePackage{luatex85}
\usepackage{titlesec}
\usepackage[top=1.2in,bottom=1.15in,right=1.15in,left=1.15in,headheight=50pt,headsep=4mm]{geometry}
\usepackage[american]{babel}
\usepackage[titletoc]{appendix}
\addtocontents{toc}{\protect\setcounter{tocdepth}{1}}
\usepackage[no-math]{fontspec}
\setmonofont[Scale=.753]{DejaVu Sans Mono}
\usepackage{ebgaramond}
\usepackage[cmintegrals,cmbraces]{newtxmath}
\usepackage{ebgaramond-maths}
\usepackage{anyfontsize}
\usepackage[italic,defaultmathsizes,nolessnomore]{mathastext}
\defaultfontfeatures{RawFeature={+calt,+clig,+dlig,liga,cv06}}
\usepackage{fancyhdr}
\pagestyle{fancy}
%\setlength{\headheight}{15pt}
\renewcommand{\chaptermark}[1]{\markboth{#1}{}}
\renewcommand{\sectionmark}[1]{\markright{\thesection\, #1}}
\fancyhf{} % delete current setting for header and footer
\fancyhead[LE,RO]{\thepage}
\fancyhead[CO]{\textit{\rightmark}}
\fancyhead[CE]{\leftmark}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}
\addtolength{\headheight}{50pt} % make space for the rule
\fancypagestyle{plain}{%
\fancyhead{} % get rid of headers on plain pages
\renewcommand{\headrulewidth}{0pt} % and the line
}
\titleformat{\chapter}[display]{}
{\filcenter\normalfont\romanspaced\large\scshape chapter\ \thechapter}
{.2cm}
{\normalfont\Large\romanspaced\itshape\filcenter}
\usepackage{titlesec}
\titleformat{\section}[block]{\bfseries\filcenter}{\thesection}{1em}{}
\titleformat{\subsection}[block]{\itshape\filcenter}{\thesubsection}{1em}{}
\begin{document}
\author{\Large Author}
\date{}
\frontmatter
\title{\Huge \textsc{title} \\[5cm] {}}
\maketitle
\begingroup
\defaultfontfeatures{Ligatures={NoContextual}}
\setmainfont{EB Garamond}[
Numbers={OldStyle,Monospaced},
]
\fancyhead[C]{\emph{Contents}}
\tableofcontents
\endgroup
\pagestyle{fancy}
\chapter{Preface}
\fancyhead[CE]{\leftmark}
Some text here ...
\mainmatter
\pagestyle{fancy}
\fancyhead[CE]{\leftmark}
\fancyhead[CO]{\textit{\rightmark}}
\chapter{Introduction}
Some more text ...
\chapter{Second chapter}
... and more ...
\appendix
\renewcommand{\thechapter}{{\textsc{\alph{chapter}}}}
\titleformat{\chapter}[display]{}
{\filcenter\normalfont\romanspaced\large\scshape appendix \thechapter}
{.2cm}
{\normalfont\Large\romanspaced\itshape\filcenter}
\appendixpage
\noappendicestocpagenum
\addappheadtotoc
\chapter{Proof of Theorem 1}
... still more text ...
\chapter{Proof of Theorem 2}
... and more ...
\end{document}
答案1
对于您的示例，一个足够的解决方案是在 \tableofcontents 之前重新定义 \textsc（同时确保整体被分组，因此重新定义仍然是本地的）：
{\renewcommand{\textsc}[1]{\MakeUppercase #1}
\tableofcontents
}
当目录中需要使用小型大写字母时，就需要采用一些更加精细的方法。