向 \caption 添加一个或多个参数

Question

我想向 添加一个参数\caption，以便我可以为表格、图形或注释添加标题。为什么如果我像下面显示的那样修改定义，会出现错误？

\documentclass[nofonts]{tufte-handout}

\usepackage{booktabs}    

\makeatletter

%%
% Format the captions in a style similar to the sidenotes

\long\def\@caption#1[#2]#3{%
  \par%
  \addcontentsline{\csname ext@#1\endcsname}{#1}%
    {\protect\numberline{\csname the#1\endcsname}{\ignorespaces #2}}%
  \begingroup%
    \@parboxrestore%
    \if@minipage%
      \@setminipage%
    \fi%
    \@tufte@caption@font\@tufte@caption@justification%
    \noindent\csname fnum@#1\endcsname: \ignorespaces#3\par%
    %\@makecaption{\csname fnum@#1\endcsname}{\ignorespaces #3}\par
  \endgroup}

\makeatother    

\begin{document}


\begin{table}[h]
\begin{center}
    \footnotesize%
    \begin{tabular}{lcr}
        \toprule
        Heading & Style & Size \\
        \midrule
        Part & roman & 1 \\
        Chapter & italic & 2 \\
        Section & italic & 11\\
        Subsection & italic & 111 \\
        Paragraph & italic & 10/14 \\
        \bottomrule
    \end{tabular}
\end{center}
\caption{Fonts}{These are\dots}
\end{table}

\end{document}

---

为什么我不能像这样修改定义？

\long\def\@caption#1[#2]#3#4{%
  \par%
  \addcontentsline{\csname ext@#1\endcsname}{#1}%
    {\protect\numberline{\csname the#1\endcsname}{\ignorespaces #2}}%
  \begingroup%
    \@parboxrestore%
    \if@minipage%
      \@setminipage%
    \fi%
    \@tufte@caption@font\@tufte@caption@justification%
    \noindent\textsc{#3} \ignorespaces#4\par%
    %\@makecaption{\csname fnum@#1\endcsname}{\ignorespaces #3}\par
  \endgroup}

---

错误：

! Missing number, treated as zero.
<to be read again> 
                   \par 
l.158 \end{table}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

! Missing = inserted for \ifnum.
<to be read again> 
                   \par 
l.158 \end{table}

I was expecting to see `<', `=', or `>'. Didn't.

! Missing number, treated as zero.
<to be read again> 
                   \par 
l.158 \end{table}

A number should have been here; I inserted `0'.
(If you can't figure out why I needed to see a number,
look up `weird error' in the index to The TeXbook.)

Answer 1

内部宏\@tufte@caption读取 的最终参数\caption。以下示例使用最后一个参数#4作为标题文本，并将标题类型 ( Fonts) 放入宏 中\my@caption@type。然后可以在内部使用\@caption其正常参数 ( #1[#2]#3)。

Fonts此外，表格列表中放置的是类型 ( )，而不是数字。由于需要额外的空间，因此\@tufte@lof@line进行了相应调整：

\documentclass[nofonts]{tufte-handout}

\usepackage{booktabs}

\makeatletter

\long\def\@caption#1[#2]#3{%
  \par%
  \addcontentsline{\csname ext@#1\endcsname}{#1}%
  %  {\protect\numberline{\csname the#1\endcsname}{\ignorespaces #2}}%
    {\protect\numberline{\textsc{\my@caption@type}}{\ignorespaces #2}}%
  \begingroup
    \@parboxrestore
    \if@minipage
      \@setminipage
    \fi
    \@tufte@caption@font\@tufte@caption@justification
    \noindent\textsc{\my@caption@type} \ignorespaces#3\par
    %\@makecaption{\csname fnum@#1\endcsname}{\ignorespaces #3}\par
  \endgroup
}

\long\def\@tufte@caption[#1][#2]#3#4{%
  \gdef\my@caption@type{#3}%
  \ifthenelse{\isempty{#1}}%
    {\gdef\@tufte@stored@shortcaption{#4}}%
    {\gdef\@tufte@stored@shortcaption{#1}}%
  \gsetlength{\@tufte@caption@vertical@offset}{-#2}%
  \gdef\@tufte@stored@caption{#4}%
}
\makeatother

\begin{document}

\begingroup
  \makeatletter
  \renewcommand*{\@tufte@lof@line}[2]{%
    % #1 is the figure/table number and its caption text
    % #2 is the page number on which the figure/table appears
    \leftskip 0.0em
    \rightskip 0em 
    \parfillskip 0em plus 1fil
    \parindent 0.0em
    \@afterindenttrue
    \interlinepenalty\@M
    \leavevmode
    % Increase space for the "number"
    \settowidth{\@tempdima}{\textsc{Fonts}\enspace}% largest term
    \advance\leftskip\@tempdima
    \null\nobreak\hskip -\leftskip
    {#1}\nobreak\qquad\nobreak#2% 
    \par%
  }%
  \listoftables
\endgroup

\begin{table}[h]
    \centering  
    \footnotesize
    \begin{tabular}{lcr}
        \toprule
        Heading & Style & Size \\
        \midrule
        Part & roman & 1 \\
        Chapter & italic & 2 \\
        Section & italic & 11\\
        Subsection & italic & 111 \\
        Paragraph & italic & 10/14 \\
        \bottomrule
    \end{tabular}  
\caption{Fonts}{These are\dots}
\end{table}

\end{document}