我正在制作一个自定义文档类，我注意到我的自定义变量在标题页上排版后，不知何故被重置为空。它们显示在标题页上，但我的页眉不起作用。
别在意作业部分了——我还没改。它应该是讲座。
这是我制作这个简单文档的代码：
\documentclass{notes}
\coursenumber{Course 101}
\semester{Winter 2013}
\lecture{1}
\studentname{My Name}
\studentid{My ID}
\begin{document}
\maketitle
asdf
\end{document}
这是我的 notes.cls 文件：
\ProvidesClass{notes}
\LoadClass[10pt,letterpaper]{article}
\RequirePackage{ifthen}
\RequirePackage[left=1.25in,right=1.25in,top=1.25in,bottom=1.25in]{geometry}
\RequirePackage{setspace}
\RequirePackage{amsmath}
\RequirePackage{titling}
\RequirePackage{fancyhdr}
\RequirePackage{amsfonts}
\newcommand{\@coursenumber}{{\em No \textbackslash coursenumber specified}}
\newcommand{\@semester}{{\em No \textbackslash semester specified}}
\newcommand{\@studentname}{{\em \textbackslash studentname unknown}}
\newcommand{\@studentid}{{\em \textbackslash studentid unknown}}
\newcommand{\@school}{{\em \textbackslash school unknown}}
\newcommand{\@department}{{\em \textbackslash department unknown}}
\newcommand{\@lecture}{\textbackslash lecture}
\newcommand{\solutionstext}{\bfseries (Solutions)}
\newcommand{\coursenumber}[1]{\renewcommand{\@coursenumber}{#1}}
\newcommand{\semester}[1]{\renewcommand{\@semester}{#1}}
\newcommand{\studentname}[1]{\renewcommand{\@studentname}{#1}}
\newcommand{\studentid}[1]{\renewcommand{\@studentid}{#1}}
\newcommand{\school}[1]{\renewcommand{\@school}{#1}}
\newcommand{\department}[1]{\renewcommand{\@department}{#1}}
\newcommand{\lecture}[1]{\renewcommand{\@lecture}{#1}}
\renewcommand{\maketitle}{
\begin{titlepage}
\newcommand{\HRule}{\rule{\linewidth}{0.5mm}} % Defines a new command for the horizontal lines, change thickness here
\center
\leavevmode\\[4cm] % Center everything on the page
\HRule \\[0.4cm]
{ \huge \bfseries \@coursenumber}\\[0.0cm] % Title of your document
\HRule \\[1.5cm]
\textsc{\Large \@semester}\\[0.5cm] % Semester
\textsc{\Large \today}\\[0.5cm] % Date
\textsc{\Large Lecture \#\@lecture}\\[1.0cm] % Lecture
\HRule \\[1.0cm]
\Large \emph{Author:} \\ \@studentname \\
\@studentid \\[3cm]
\vfill % Fill the rest of the page with whitespace
\end{titlepage}
}
\makeatletter
% These commands follow the titling package format for titles
% They define user commands to format the subtitle
\newcommand\presubtitle[1]{\gdef\@presubtitle{#1}}
\newcommand\postsubtitle[1]{\gdef\@postsubtitle{#1}}
% This command takes the subtitle as its argument, and uses the titling command
% \maketitlehookb plus the previously defined formatting commands to insert
% the subtitle into the titlepage. It also generates \thesubtitle for subsequent use
\newcommand\subtitle[1]{%
\renewcommand{\maketitlehookb}{\@presubtitle#1\@postsubtitle}
\newcommand\thesubtitle{#1}}
\makeatother
% Now we define the formatting for the subtitle
\presubtitle{\begin{center}\Large} % change this as needed
\postsubtitle{\end{center}}
% These commands set up the headers. They are set up for even and odd pages the same
% Check the fancyhdr documentation for information on how to set them differently
% for odd and even pages
\lhead{\begin{tabular}{@{}l}\@coursenumber\ (\@semester)\\\@studentname\ (\@studentid)\end{tabular}}
\chead{}
\rhead{\begin{tabular}{r@{}}Assignment \#\@assignment\\\today\end{tabular}}
\lfoot{}
\cfoot{\thepage}
\rfoot{}
% Set the width of the header rule. Make 0pt to remove the rule.
\renewcommand{\headrulewidth}{.5pt}
\renewcommand{\footrulewidth}{0pt}
% Make the head height match the size of the header
\setlength{\headheight}{24pt}
\pagestyle{fancy}
% Remove "Chapter" from the marks
%\renewcommand{\chaptermark}[1]{%
% \markboth{\thechapter.\ #1}{}}
答案1
\makeatletter虽然在样式 ( .sty) 或类 ( .cls) 文件中使用是无害的，但\makeatother会不必要地将的类别代码更改@为其他 (12)（请参阅类别代码是什么？)，这导致后续在控制序列中使用@会出现问题。因此，删除 (对\makeatletterand) \makeatother。