我正在为我的书使用自定义类。在miktex2020 年 10 月 28 日进行的最新更新后，本书的编译引发了一个错误。简短的调查显示，miktex 包中更改的文件是ltxbase和unicode-data。错误是由xkeyval包引发的，它错误地检测到它在 之前被调用\documentclass，但事实并非如此。以下 MWE 显示book来自包的标准类ltxbase不会引发此类错误：
%\documentclass[a4paper,11pt,openany,twoside,unicode]{Common/PlasmaBook2}
\documentclass{book}
\usepackage{xkeyval}
\begin{document}
Something to say\ldots
\end{document}
但是使用自定义类最终会出现错误消息：
! Package xkeyval Error: xkeyval loaded before \documentclass.
See the xkeyval package documentation for explanation.
Type H <return> for immediate help.
...
l.62 ...yval loaded before \protect\documentclass}
xkeyval以下是包中检测错误的行：
\ifx\XKV@documentclass\@undefined
\XKV@err{xkeyval loaded before \protect\documentclass}%
\let\XKV@documentclass\@empty
\let\XKV@classoptionslist\@empty
\else
\let\XKV@classoptionslist\@classoptionslist
\def\XKV@tempa#1{%
\let\@classoptionslist\@empty
\XKV@for@n{#1}\XKV@tempa{%
\expandafter\in@\expandafter=\expandafter{\XKV@tempa}%
\ifin@\else\XKV@addtolist@o\@classoptionslist\XKV@tempa\fi
}%
}
\expandafter\XKV@tempa\expandafter{\@classoptionslist}
\fi
可以看出，xkeyval由于未能定义\XKV@documentclass前几行，因此引发了错误：
\XKV@whilist\@filelist\XKV@tempa\ifx\XKV@documentclass\@undefined\fi{%
\filename@parse\XKV@tempa
\ifx\filename@ext\@clsextension
\XKV@ifundefined{opt@\filename@area\filename@base.\filename@ext
}{}{%
\edef\XKV@documentclass{%
\filename@area\filename@base.\filename@ext
}%
}%
\fi
}
我的假设是，最近的更新ltxbase改变了一些工作方式\documentclass。我的自定义类中应该检查什么？据我记得，它基于book类的一些旧版本。
更新：这里是减少的自定义类：
\NeedsTeXFormat{LaTeX2e}[1998/06/01]
\ProvidesClass{Common/PlasmaBook2}[2020/06/27 v0.99j LaTeX document class]
%<KIA>
\RequirePackage[dvipsnames,svgnames]{xcolor}
\definecolor{titleColor}{named}{Brown}
\let\@afterindentfalse\@afterindenttrue
\@afterindenttrue
%</KIA>
\newcommand\@ptsize{}
\newif\if@restonecol
\newif\if@titlepage
\@titlepagetrue
\newif\if@openright
\newif\if@mainmatter \@mainmattertrue
%IAK>
\newif\if@makechanges
\newif\if@unicode \@unicodefalse
\newif\if@binom \@binomfalse
%IAK<
\if@compatibility\else
\DeclareOption{a4paper}
{\setlength\paperheight {297mm}%
\setlength\paperwidth {210mm}}
\DeclareOption{a5paper}
{\setlength\paperheight {210mm}%
\setlength\paperwidth {148mm}}
\DeclareOption{b5paper}
{\setlength\paperheight {250mm}%
\setlength\paperwidth {176mm}}
\DeclareOption{letterpaper}
{\setlength\paperheight {11in}%
\setlength\paperwidth {8.5in}}
\DeclareOption{legalpaper}
{\setlength\paperheight {14in}%
\setlength\paperwidth {8.5in}}
\DeclareOption{executivepaper}
{\setlength\paperheight {10.5in}%
\setlength\paperwidth {7.25in}}
\DeclareOption{landscape}
{\setlength\@tempdima {\paperheight}%
\setlength\paperheight {\paperwidth}%
\setlength\paperwidth {\@tempdima}}
\fi
\if@compatibility
\renewcommand\@ptsize{0}
\else
\DeclareOption{10pt}{\renewcommand\@ptsize{0}}
\fi
\DeclareOption{11pt}{\renewcommand\@ptsize{1}}
\DeclareOption{12pt}{\renewcommand\@ptsize{2}}
\if@compatibility\else
\DeclareOption{oneside}{\@twosidefalse \@mparswitchfalse}
\fi
\DeclareOption{twoside}{\@twosidetrue \@mparswitchtrue}
\DeclareOption{draft}{\setlength\overfullrule{5pt}}
\if@compatibility\else
\DeclareOption{final}{\setlength\overfullrule{0pt}}
\fi
\DeclareOption{titlepage}{\@titlepagetrue}
\if@compatibility\else
\DeclareOption{notitlepage}{\@titlepagefalse}
\fi
\if@compatibility
\@openrighttrue
\else
\DeclareOption{openright}{\@openrighttrue}
\DeclareOption{openany}{\@openrightfalse}
\fi
\if@compatibility\else
\DeclareOption{onecolumn}{\@twocolumnfalse}
\fi
\DeclareOption{twocolumn}{\@twocolumntrue}
\DeclareOption{leqno}{\input{leqno.clo}}
\DeclareOption{fleqn}{\input{fleqn.clo}}
\DeclareOption{openbib}{%
\AtEndOfPackage{%
\renewcommand\@openbib@code{%
\advance\leftmargin\bibindent
\itemindent -\bibindent
\listparindent \itemindent
\parsep \z@
}%
\renewcommand\newblock{\par}}%
}
%IAK>
\DeclareOption{adoptchanges}{\@makechangestrue}
\DeclareOption{rejectchanges}{\@makechangesfalse}
\DeclareOption{unicode}{\@unicodetrue}
\DeclareOption{binom}{\@binomtrue}
%IAK<
\ExecuteOptions{a4paper,10pt,twoside,onecolumn,final,openright,adoptchanges}
\ProcessOptions
\input{bk1\@ptsize.clo}
\setlength\lineskip{1\p@}
\setlength\normallineskip{1\p@}
\renewcommand\baselinestretch{}
\setlength\parskip{0\p@ \@plus \p@}
\@lowpenalty 51
\@medpenalty 151
\@highpenalty 301
\setcounter{topnumber}{2}
\renewcommand\topfraction{.7}
\setcounter{bottomnumber}{1}
\renewcommand\bottomfraction{.3}
\setcounter{totalnumber}{3}
\renewcommand\textfraction{.2}
\renewcommand\floatpagefraction{.5}
\setcounter{dbltopnumber}{2}
\renewcommand\dbltopfraction{.7}
\renewcommand\dblfloatpagefraction{.5}
\if@twoside
\def\ps@headings{%
\let\@oddfoot\@empty\let\@evenfoot\@empty
\def\@evenhead{\thepage\hfil\slshape\leftmark}%
\def\@oddhead{{\slshape\rightmark}\hfil\thepage}%
\let\@mkboth\markboth
\def\chaptermark##1{%
%\markboth {\MakeUppercase{%
\markboth {{%
\ifnum \c@secnumdepth >\m@ne
\if@mainmatter
\@chapapp\ \thechapter. \ %
\fi
\fi
##1}}{}}%
\def\sectionmark##1{%
%\markright {\MakeUppercase{%
\markright {{%
\ifnum \c@secnumdepth >\z@
\thesection. \ %
\fi
##1}}}}
\else
\def\ps@headings{%
\let\@oddfoot\@empty
\def\@oddhead{{\slshape\rightmark}\hfil\thepage}%
\let\@mkboth\markboth
\def\chaptermark##1{%
%\markright {\MakeUppercase{%
\markright {{%
\ifnum \c@secnumdepth >\m@ne
\if@mainmatter
\@chapapp\ \thechapter. \ %
\fi
\fi
##1}}}}
\fi
\def\ps@myheadings{%
\let\@oddfoot\@empty\let\@evenfoot\@empty
\def\@evenhead{\thepage\hfil\slshape\leftmark}%
\def\@oddhead{{\slshape\rightmark}\hfil\thepage}%
\let\@mkboth\@gobbletwo
\let\chaptermark\@gobble
\let\sectionmark\@gobble
}
%%%IAK>
\def\series#1{\gdef\@series{#1}}
\def\@series{\@latex@warning@no@line{No \noexpand\series given}}
\def\referee#1{\gdef\@referee{#1}}
\def\@referee{\@latex@warning@no@line{No \noexpand\referee given}}
\long\def\abstract#1{\long\gdef\@abstract{#1}}
\def\@abstract{\@latex@warning@no@line{No \noexpand\abstract given}}
\def\UDK#1{\gdef\@UDK{#1}}
\def\@UDK{\@latex@warning@no@line{No \noexpand\UDK given}}
%%%IAK<
\newcommand*\chaptermark[1]{}
%% KIA вторник, Сентябрь 6, 2005@10:41
%\setcounter{secnumdepth}{2}
\setcounter{secnumdepth}{1}
\newcounter {part}
\newcounter {chapter}
%%
%% Вводим счетчик полного числа глав, может использоваться в \sref, \seqref
%%
%%%%%\newcounter {chaptertotal}% пятница, Август 14, 2020 12:57
%%
%% Вводим счетчик раздела для другой версии команд \sref, \seqref
%% предполагается, что \appendix вызывает \refstepcounter{mattercnt}
%%
\newcounter {mattercnt}% пятница, Август 14, 2020 12:57
%IAK:
\newcounter {section}[chapter]
%\newcounter {section}
\newcounter {subsection}[section]
\newcounter {subsubsection}[subsection]
\newcounter {paragraph}[subsubsection]
\newcounter {subparagraph}[paragraph]
\renewcommand \thepart {\@Roman\c@part}
\renewcommand \thechapter {\@arabic\c@chapter}
\renewcommand \thesection {\S\thechapter.\@arabic\c@section}
%IAK: \renewcommand \thesection {\S\@arabic\c@section}
%IAK: \renewcommand \thesection {\S\@arabic\c@section}
\renewcommand\thesubsection {\thesection.\@arabic\c@subsection}
\renewcommand\thesubsubsection{\thesubsection .\@arabic\c@subsubsection}
\renewcommand\theparagraph {\thesubsubsection.\@arabic\c@paragraph}
\renewcommand\thesubparagraph {\theparagraph.\@arabic\c@subparagraph}
\newcommand\@chapapp{\chaptername}
\newcommand\frontmatter{%
\cleardoublepage
\@mainmatterfalse
\pagenumbering{roman}}
\newcommand\mainmatter{%
\cleardoublepage
\@mainmattertrue
\pagenumbering{arabic}}
\newcommand\backmatter{%
\if@openright
\cleardoublepage
\else
\clearpage
\fi
\@mainmatterfalse}
\newcommand\part{%
\if@openright
\cleardoublepage
\else
\clearpage
\fi
\if@binom
\thispagestyle{empty}
\else
\thispagestyle{plain}
\fi
\if@twocolumn
\onecolumn
\@tempswatrue
\else
\@tempswafalse
\fi
\null\vfil
\secdef\@part\@spart}
\def\@part[#1]#2{%
\ifnum \c@secnumdepth >-2\relax
\refstepcounter{part}%
\addcontentsline{toc}{part}{\thepart\hspace{1em}#1}%
\else
\addcontentsline{toc}{part}{#1}%
\fi
\markboth{}{}%
{\centering
\interlinepenalty \@M
\normalfont
\ifnum \c@secnumdepth >-2\relax
\huge\bfseries \partname~\thepart
\par
\vskip 20\p@
\fi
\Huge \bfseries #2\par}%
\@endpart}
\def\@spart#1{%
{\centering
\interlinepenalty \@M
\normalfont
\Huge \bfseries #1\par}%
\@endpart}
\def\@endpart{\vfil\newpage
\if@twoside
\null
\thispagestyle{empty}%
\newpage
\fi
\if@tempswa
\twocolumn
\fi}
\newcommand\chapter{\if@openright\cleardoublepage\else\clearpage\fi
\if@binom
\thispagestyle{empty}
\else
\thispagestyle{plain}
\fi
\global\@topnum\z@
\@afterindentfalse
\secdef\@chapter\@schapter}
\def\@chapter[#1]#2{\ifnum \c@secnumdepth >\m@ne
\if@mainmatter
\refstepcounter{chapter}%
%%%%%\refstepcounter{chaptertotal}% пятница, Август 14, 2020 12:58
\typeout{\@chapapp\space\thechapter.}%
\addcontentsline{toc}{chapter}%
%% среда, Сентябрь 23, 2020 11:22
%% со стандартным \tableofcontenrs
%{\protect\numberline{\thechapter}#1}%
%% только с titletoc-v1
{\protect\numberline{\chaptername~\thechapter}#1}%
\else
\addcontentsline{toc}{chapter}{#1}%
\fi
\else
\addcontentsline{toc}{chapter}{#1}%
\fi
\chaptermark{#1}%
\addtocontents{lof}{\protect\addvspace{10\p@}}%
\addtocontents{lot}{\protect\addvspace{10\p@}}%
\if@twocolumn
\@topnewpage[\@makechapterhead{#2}]%
\else
%\@makechapterhead{#2}%
\@makechapterhead[#1]{#2}%
\@afterheading
\fi}
%%% ===================================================
%%\def\@makechapterhead#1{%
%% \vspace*{50\p@}%
%% {\parindent \z@ \raggedright \normalfont
%% \ifnum \c@secnumdepth >\m@ne
%% \if@mainmatter
%% \huge\bfseries \@chapapp\space \thechapter
%% \par\nobreak
%% \vskip 20\p@
%% \fi
%% \fi
%% \interlinepenalty\@M
%% \Huge \bfseries #1\par\nobreak
%% \vskip 40\p@
%% }}
%%% ===================================================
\def\@makechapterhead[#1]#2{%
\vspace*{40\p@}%
{\parindent \z@ \raggedright \titlefont\color{titleColor}
\ifnum \c@secnumdepth >\m@ne
\if@mainmatter
\Large \bfseries \@chapapp{} \thechapter
\par\nobreak
\vskip 10\p@
\fi
\fi
\interlinepenalty\@M % <- what is it?
\huge \bfseries
\sbox\@tempboxa{#1}%
%%\the\hsize=\the\columnwidth ?<? \the\wd\@tempboxa
%% Allow 2 lines of huge size title@most
\ifdim \wd\@tempboxa < 2\hsize
#1 \\[-0.5em]
\hrulefill
\par\nobreak
\vskip 10\p@
% Don't type #2 if #2=#1
\def\@tempa{#1}
\def\@tempb{#2}
\ifx\@tempa\@tempb
\else
%\hangindent=15pt\hangafter=0
\hangindent=17pt\hangafter=0
\large \parbox{0.95\columnwidth}{\raggedright #2}\par\nobreak
\fi
\else
\large #2\par\nobreak
\fi
\vskip 20\p@
}}
%%% ===================================================
\def\@schapter#1{\if@twocolumn
\@topnewpage[\@makeschapterhead{#1}]%
\else
\@makeschapterhead{#1}%
\@afterheading
\fi}
\def\@makeschapterhead#1{%
%IAK: \vspace*{50\p@}%
\vspace*{40\p@}%
{\parindent \z@ \raggedright
\normalfont
\interlinepenalty\@M
%IAK: \Huge \bfseries #1\par\nobreak
\Huge\titlefont\color{titleColor} \bfseries #1\par\nobreak
%IAK: \vskip 40\p@
\vskip 20\p@
}}
% =========================================================
\newcommand\section{\@startsection {section}{1}{\z@}% #1#2#3
{-3.5ex \@plus -1ex \@minus -.2ex}% #4
{2.3ex \@plus.2ex}% #5
%IAK: {\normalfont\Large\bfseries}} #6
{\indent\normalfont\titlefont\large\bfseries\color{titleColor}\raggedright}}
\newcommand\subsection{\@startsection{subsection}{2}{\z@}%
{-3.25ex\@plus -1ex \@minus -.2ex}%
{1.5ex \@plus .2ex}%
%IAK: {\normalfont\large\bfseries}}
{\indent\normalfont\titlefont\bfseries\color{titleColor}\raggedright}}
\newcommand\subsubsection{\@startsection{subsubsection}{3}{\z@}%
{-3.25ex\@plus -1ex \@minus -.2ex}%
{1.5ex \@plus .2ex}%
%IAK: {\normalfont\normalsize\bfseries}}
{\indent\normalfont\titlefont\normalsize\bfseries\color{titleColor}\raggedright}}
\newcommand\paragraph{\@startsection{paragraph}{4}{\z@}%
{3.25ex \@plus1ex \@minus.2ex}%
{-1em}%
%IAK: {\normalfont\normalsize\bfseries}}
{\indent\normalfont\titlefont\normalsize\bfseries\color{titleColor}\raggedright}}
\newcommand\subparagraph{\@startsection{subparagraph}{5}{\parindent}%
{3.25ex \@plus1ex \@minus .2ex}%
{-1em}%
%IAK: {\normalfont\normalsize\bfseries}}
{\indent\normalfont\titlefont\normalsize\bfseries\color{titleColor}\raggedright}}
\if@twocolumn
\setlength\leftmargini {2em}
\else
\setlength\leftmargini {2.5em}
\fi
\leftmargin \leftmargini
\setlength\leftmarginii {2.2em}
\setlength\leftmarginiii {1.87em}
\setlength\leftmarginiv {1.7em}
\if@twocolumn
\setlength\leftmarginv {.5em}
\setlength\leftmarginvi {.5em}
\else
\setlength\leftmarginv {1em}
\setlength\leftmarginvi {1em}
\fi
\setlength \labelsep {.5em}
\setlength \labelwidth{\leftmargini}
\addtolength\labelwidth{-\labelsep}
\@beginparpenalty -\@lowpenalty
\@endparpenalty -\@lowpenalty
\@itempenalty -\@lowpenalty
\renewcommand\theenumi{\@arabic\c@enumi}
\renewcommand\theenumii{\@alph\c@enumii}
\renewcommand\theenumiii{\@roman\c@enumiii}
\renewcommand\theenumiv{\@Alph\c@enumiv}
\newcommand\labelenumi{\theenumi.}
\newcommand\labelenumii{(\theenumii)}
\newcommand\labelenumiii{\theenumiii.}
\newcommand\labelenumiv{\theenumiv.}
\renewcommand\p@enumii{\theenumi}
\renewcommand\p@enumiii{\theenumi(\theenumii)}
\renewcommand\p@enumiv{\p@enumiii\theenumiii}
\newcommand\labelitemi{\textbullet}
\newcommand\labelitemii{\normalfont\bfseries \textendash}
\newcommand\labelitemiii{\textasteriskcentered}
\newcommand\labelitemiv{\textperiodcentered}
\newenvironment{description}
{\list{}{\labelwidth\z@ \itemindent-\leftmargin
\let\makelabel\descriptionlabel}}
{\endlist}
\newcommand*\descriptionlabel[1]{\hspace\labelsep
\normalfont\bfseries #1}
\newenvironment{verse}
{\let\\\@centercr
\list{}{\itemsep \z@
\itemindent -1.5em%
\listparindent\itemindent
\rightmargin \leftmargin
\advance\leftmargin 1.5em}%
\item\relax}
{\endlist}
\newenvironment{quotation}
{\list{}{\listparindent 1.5em%
\itemindent \listparindent
\rightmargin \leftmargin
\parsep \z@ \@plus\p@}%
\item\relax}
{\endlist}
\newenvironment{quote}
{\list{}{\rightmargin\leftmargin}%
\item\relax}
{\endlist}
\if@compatibility
\newenvironment{titlepage}
{%
\cleardoublepage
\if@twocolumn
\@restonecoltrue\onecolumn
\else
\@restonecolfalse\newpage
\fi
\thispagestyle{empty}%
\setcounter{page}\z@
}%
{\if@restonecol\twocolumn \else \newpage \fi
}
\else
\newenvironment{titlepage}
{%
\cleardoublepage
\if@twocolumn
\@restonecoltrue\onecolumn
\else
\@restonecolfalse\newpage
\fi
\thispagestyle{empty}%
\setcounter{page}\@ne
}%
{\if@restonecol\twocolumn \else \newpage \fi
\if@twoside\else
\setcounter{page}\@ne
\fi
}
\fi
\newcommand\appendix{\par
\setcounter{chapter}{0}%
\setcounter{section}{0}%
\refstepcounter{mattercnt}% пятница, Август 14, 2020 13:49
\renewcommand\@chapapp{\appendixname}%
\renewcommand\thechapter{\@Alph\c@chapter}}
% \renewcommand\thechapter{\Asbuk{chapter}}}
\setlength\arraycolsep{5\p@}
\setlength\tabcolsep{6\p@}
\setlength\arrayrulewidth{.4\p@}
\setlength\doublerulesep{2\p@}
\setlength\tabbingsep{\labelsep}
\skip\@mpfootins = \skip\footins
\setlength\fboxsep{3\p@}
\setlength\fboxrule{.4\p@}
%% ==============================================
\@addtoreset {equation}{chapter}
\renewcommand\theequation
{\ifnum \c@chapter>\z@ \thechapter.\fi \@arabic\c@equation}
\newcounter{figure}[chapter]
\renewcommand \thefigure
% KIA пятница, Декабрь 23, 2005@17:02
{\ifnum \c@chapter>\z@ \thechapter.\fi \@arabic\c@figure}
%{\ifnum \c@chapter>\z@ \thechapter-\fi \@arabic\c@figure}
\def\fps@figure{tbp}
\def\ftype@figure{1}
\def\ext@figure{lof}
\def\fnum@figure{\figurename~\thefigure}
\newenvironment{figure}
{\@float{figure}}
{\end@float}
\newenvironment{figure*}
{\@dblfloat{figure}}
{\end@dblfloat}
\newcounter{table}[chapter]
\renewcommand \thetable
% KIA понедельник, Май 21, 2012 09:42
{\ifnum \c@chapter>\z@ \thechapter.\fi \@arabic\c@table}
%{\ifnum \c@chapter>\z@ \thechapter-\fi \@arabic\c@table}
\def\fps@table{tbp}
\def\ftype@table{2}
\def\ext@table{lot}
\def\fnum@table{\tablename~\thetable}
\newenvironment{table}
{\@float{table}}
{\end@float}
\newenvironment{table*}
{\@dblfloat{table}}
{\end@dblfloat}
\newlength\abovecaptionskip
\newlength\belowcaptionskip
\setlength\abovecaptionskip{10\p@}
%%<KIA>
%\setlength\belowcaptionskip{0\p@}
\setlength\belowcaptionskip{10\p@}
\long\def\@makecaption#1#2{%
% \vskip\abovecaptionskip
\vskip\abovecaptionskip\small
% \sbox\@tempboxa{#1: #2}%
%\sbox\@tempboxa{\textcolor{\titleColor}{\itshape\bfseries #1.} #2}%
\sbox\@tempboxa{\textcolor{titleColor}{\bfseries #1.} #2}%
\ifdim \wd\@tempboxa >\hsize
% #1: #2\par
%\textcolor{\titleColor}{\itshape\bfseries #1.} #2\par
\textcolor{titleColor}{\bfseries #1.} #2\par
\else
\global \@minipagefalse
\hb@xt@\hsize{\hfil\box\@tempboxa\hfil}%
\fi
\vskip\belowcaptionskip}
%%</KIA>
\newcommand\@pnumwidth{1.55em}
\newcommand\@tocrmarg{2.55em}
\newcommand\@dotsep{4.5}
\setcounter{tocdepth}{2}
\newcommand\tableofcontents{%
\if@twocolumn
\@restonecoltrue\onecolumn
\else
\@restonecolfalse
\fi
\chapter*{\contentsname
\@mkboth{%
%\MakeUppercase\contentsname}{\MakeUppercase\contentsname}}%
\contentsname}{\contentsname}}%
\@starttoc{toc}%
\if@restonecol\twocolumn\fi
}
\newcommand*\l@part[2]{%
\ifnum \c@tocdepth >-2\relax
\addpenalty{-\@highpenalty}%
\addvspace{2.25em \@plus\p@}%
\begingroup
\parindent \z@ \rightskip \@pnumwidth
\parfillskip -\@pnumwidth
{\leavevmode
%\large \bfseries #1\hfil \hb@xt@\@pnumwidth{\hss #2}}\par
% НГУ
\large \bfseries #1\hfil\mdseries \hb@xt@\@pnumwidth{\hss #2}}\par
\nobreak
\global\@nobreaktrue
\everypar{\global\@nobreakfalse\everypar{}}%
\endgroup
\fi}
\newcommand*\l@chapter[2]{%
\ifnum \c@tocdepth >\m@ne
\addpenalty{-\@highpenalty}%
\vskip 1.0em \@plus\p@
\setlength\@tempdima{1.5em}%
\begingroup
\parindent \z@ \rightskip \@pnumwidth
\parfillskip -\@pnumwidth
\leavevmode \bfseries
\advance\leftskip\@tempdima
\hskip -\leftskip
%#1\nobreak\hfil \nobreak\hb@xt@\@pnumwidth{\hss #2}\par
% НГУ
#1\nobreak\hfil \nobreak\mdseries\hb@xt@\@pnumwidth{\hss #2}\par
\penalty\@highpenalty
\endgroup
\fi}
\newcommand*\l@section{\@dottedtocline{1}{1.5em}{2.3em}}
\newcommand*\l@subsection{\@dottedtocline{2}{3.8em}{3.2em}}
\newcommand*\l@subsubsection{\@dottedtocline{3}{7.0em}{4.1em}}
\newcommand*\l@paragraph{\@dottedtocline{4}{10em}{5em}}
\newcommand*\l@subparagraph{\@dottedtocline{5}{12em}{6em}}
\newcommand\listoffigures{%
\if@twocolumn
\@restonecoltrue\onecolumn
\else
\@restonecolfalse
\fi
\chapter*{\listfigurename
%\@mkboth{\MakeUppercase\listfigurename}%
% {\MakeUppercase\listfigurename}}%
\@mkboth{\listfigurename}%
{\listfigurename}}%
\@starttoc{lof}%
\if@restonecol\twocolumn\fi
}
\newcommand*\l@figure{\@dottedtocline{1}{1.5em}{2.3em}}
\newcommand\listoftables{%
\if@twocolumn
\@restonecoltrue\onecolumn
\else
\@restonecolfalse
\fi
\chapter*{\listtablename
\@mkboth{%
%\MakeUppercase\listtablename}{\MakeUppercase\listtablename}}%
\listtablename}{\listtablename}}%
\@starttoc{lot}%
\if@restonecol\twocolumn\fi
}
\let\l@table\l@figure
\newdimen\bibindent
\setlength\bibindent{1.5em}
\newenvironment{thebibliography}[1]
{\chapter*{\bibname
%\@mkboth{\MakeUppercase\bibname}{\MakeUppercase\bibname}}%
\@mkboth{\bibname}{\bibname}}%
\list{\@biblabel{\@arabic\c@enumiv}}%
{\settowidth\labelwidth{\@biblabel{#1}}%
\leftmargin\labelwidth
\advance\leftmargin\labelsep
\@openbib@code
\usecounter{enumiv}%
\let\p@enumiv\@empty
\renewcommand\theenumiv{\@arabic\c@enumiv}}%
\sloppy
\clubpenalty4000
\@clubpenalty \clubpenalty
\widowpenalty4000%
\sfcode`\.\@m}
{\def\@noitemerr
{\@latex@warning{Empty `thebibliography' environment}}%
\endlist}
\newcommand\newblock{\hskip .11em\@plus.33em\@minus.07em}
\let\@openbib@code\@empty
\newenvironment{theindex}
{\if@twocolumn
\@restonecolfalse
\else
\@restonecoltrue
\fi
\columnseprule \z@
\columnsep 35\p@
\twocolumn[\@makeschapterhead{\indexname}]%
% \@mkboth{\MakeUppercase\indexname}%
% {\MakeUppercase\indexname}%
\@mkboth{\indexname}%
{\indexname}%
%\thispagestyle{plain}\parindent\z@
\if@binom
\thispagestyle{empty}\parindent\z@
\else
\thispagestyle{plain}\parindent\z@
\fi
\parskip\z@ \@plus .3\p@\relax
\let\item\@idxitem}
{\if@restonecol\onecolumn\else\clearpage\fi}
\newcommand\@idxitem{\par\hangindent 40\p@}
\newcommand\subitem{\@idxitem \hspace*{20\p@}}
\newcommand\subsubitem{\@idxitem \hspace*{30\p@}}
\newcommand\indexspace{\par \vskip 10\p@ \@plus5\p@ \@minus3\p@\relax}
\renewcommand\footnoterule{%
\kern-3\p@
\hrule\@width.4\columnwidth
\kern2.6\p@}
\@addtoreset{footnote}{chapter}
\newcommand\@makefntext[1]{%
\parindent 1em%
\noindent
\hb@[email protected]{\hss\@makefnmark}#1}
\newcommand\contentsname{Contents}
\newcommand\listfigurename{List of Figures}
\newcommand\listtablename{List of Tables}
\newcommand\bibname{Bibliography}
\newcommand\indexname{Index}
\newcommand\figurename{Figure}
\newcommand\tablename{Table}
\newcommand\partname{Part}
\newcommand\chaptername{Chapter}
\newcommand\appendixname{Appendix}
\def\today{\ifcase\month\or
January\or February\or March\or April\or May\or June\or
July\or August\or September\or October\or November\or December\fi
\space\number\day, \number\year}
\setlength\columnsep{10\p@}
\setlength\columnseprule{0\p@}
%% ------------------------------------------------------------------
\endinput
答案1
不喜欢这个问题得不到回答...Phelype's建议对我有用。
解决方法是将类.cls文件放在 Latex 项目的根目录中，而不是子文件夹中。也就是说，\documentclass[...]{Common/PlasmaBook2}需要\documentclass[...]{PlasmaBook2}和PlasmaBook2.cls位于同一目录中main.tex。我在类方面遇到了同样的问题IEEEtran。
这显然是一个错误，但直到它被修复https://github.com/latex3/latex2e，这个修复是可行的方法之一。