我无法将该tufte-book类应用于我的文档（以前的book类）。目前，我正在尝试寻找如何在环境中使用脚注的解决方案thmtools。PdfLaTeX 给了我以下错误：
Missing number, treated as zero. ...\footnote{...}
Illegal unit of measure (pt inserted). ...\footnote{...}
Class tufte-book Error:
该thmtools定理在序言中定义如下：
\usepackage{tikz}
\usepackage{amsthm}
\usepackage{thmtools}
\usepackage[framemethod=TikZ]{mdframed}
\usepackage{needspace}
\usepackage[T1]{fontenc}
\declaretheoremstyle[
spaceabove=\topsep,
spacebelow=\topsep,
numberwithin=chapter,
headfont=\normalfont\bfseries,
notefont=\normalfont\scshape,
notebraces={$\lbrack$}{$\rbrack$},
postheadhook={\textcolor{gray}{\rule[.6ex]{\linewidth}{0.4pt}}\\},
bodyfont=\normalfont\itshape,
mdframed={
backgroundcolor=gray,
linecolor=gray,
innertopmargin=6pt,
roundcorner=5pt,
innerbottommargin=6pt,
skipabove=\parsep,
skipbelow=\parsep },
postheadspace=\newline
]{theorembreak}
\declaretheorem[style=theorembreak,name=Theorem]{theorem}
\AtBeginEnvironment{theorem}{\Needspace{10\baselineskip}}
文中的定理如下：
\begin{theorem}[Theorem]
Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt.\footnote{This is a footnote within a theorem.}
\end{theorem}
问题在于脚注。没有脚注的定理也可以正常工作。如何解决这个问题？
完整的 MWE 以及利用tufte-book类 (找到这里)如下：
\documentclass{tufte-book}
% For graphics / images
\usepackage{graphicx}
\setkeys{Gin}{width=\linewidth,totalheight=\textheight,keepaspectratio}
\graphicspath{{graphics/}}
% The fancyvrb package lets us customize the formatting of verbatim
% environments. We use a slightly smaller font.
\usepackage{fancyvrb}
\fvset{fontsize=\normalsize}
%%
% Prints argument within hanging parentheses (i.e., parentheses that take
% up no horizontal space). Useful in tabular environments.
\newcommand{\hangp}[1]{\makebox[0pt][r]{(}#1\makebox[0pt][l]{)}}
%%
% Prints an asterisk that takes up no horizontal space.
% Useful in tabular environments.
\newcommand{\hangstar}{\makebox[0pt][l]{*}}
%%
% Prints a trailing space in a smart way.
\usepackage{xspace}
% Prints an epigraph and speaker in sans serif, all-caps type.
\newcommand{\openepigraph}[2]{%
%\sffamily\fontsize{14}{16}\selectfont
\begin{fullwidth}
\sffamily\large
\begin{doublespace}
\noindent\allcaps{#1}\\% epigraph
\noindent\allcaps{#2}% author
\end{doublespace}
\end{fullwidth}
}
% Inserts a blank page
\newcommand{\blankpage}{\newpage\hbox{}\thispagestyle{empty}\newpage}
\usepackage{units}
% Typesets the font size, leading, and measure in the form of 10/12x26 pc.
\newcommand{\measure}[3]{#1/#2$\times$\unit[#3]{pc}}
% Macros for typesetting the documentation
\newcommand{\hlred}[1]{\textcolor{Maroon}{#1}}% prints in red
\newcommand{\hangleft}[1]{\makebox[0pt][r]{#1}}
\newcommand{\hairsp}{\hspace{1pt}}% hair space
\newcommand{\hquad}{\hskip0.5em\relax}% half quad space
\newcommand{\TODO}{\textcolor{red}{\bf TODO!}\xspace}
\newcommand{\na}{\quad--}% used in tables for N/A cells
\providecommand{\XeLaTeX}{X\lower.5ex\hbox{\kern-0.15em\reflectbox{E}}\kern-0.1em\LaTeX}
\newcommand{\tXeLaTeX}{\XeLaTeX\index{XeLaTeX@\protect\XeLaTeX}}
% \index{\texttt{\textbackslash xyz}@\hangleft{\texttt{\textbackslash}}\texttt{xyz}}
\newcommand{\tuftebs}{\symbol{'134}}% a backslash in tt type in OT1/T1
\newcommand{\doccmdnoindex}[2][]{\texttt{\tuftebs#2}}% command name -- adds backslash automatically (and doesn't add cmd to the index)
\newcommand{\doccmddef}[2][]{%
\hlred{\texttt{\tuftebs#2}}\label{cmd:#2}%
\ifthenelse{\isempty{#1}}%
{% add the command to the index
\index{#2 command@\protect\hangleft{\texttt{\tuftebs}}\texttt{#2}}% command name
}%
{% add the command and package to the index
\index{#2 command@\protect\hangleft{\texttt{\tuftebs}}\texttt{#2} (\texttt{#1} package)}% command name
\index{#1 package@\texttt{#1} package}\index{packages!#1@\texttt{#1}}% package name
}%
}% command name -- adds backslash automatically
\newcommand{\doccmd}[2][]{%
\texttt{\tuftebs#2}%
\ifthenelse{\isempty{#1}}%
{% add the command to the index
\index{#2 command@\protect\hangleft{\texttt{\tuftebs}}\texttt{#2}}% command name
}%
{% add the command and package to the index
\index{#2 command@\protect\hangleft{\texttt{\tuftebs}}\texttt{#2} (\texttt{#1} package)}% command name
\index{#1 package@\texttt{#1} package}\index{packages!#1@\texttt{#1}}% package name
}%
}% command name -- adds backslash automatically
\newcommand{\docopt}[1]{\ensuremath{\langle}\textrm{\textit{#1}}\ensuremath{\rangle}}% optional command argument
\newcommand{\docarg}[1]{\textrm{\textit{#1}}}% (required) command argument
\newenvironment{docspec}{\begin{quotation}\ttfamily\parskip0pt\parindent0pt\ignorespaces}{\end{quotation}}% command specification environment
\newcommand{\docenv}[1]{\texttt{#1}\index{#1 environment@\texttt{#1} environment}\index{environments!#1@\texttt{#1}}}% environment name
\newcommand{\docenvdef}[1]{\hlred{\texttt{#1}}\label{env:#1}\index{#1 environment@\texttt{#1} environment}\index{environments!#1@\texttt{#1}}}% environment name
\newcommand{\docpkg}[1]{\texttt{#1}\index{#1 package@\texttt{#1} package}\index{packages!#1@\texttt{#1}}}% package name
\newcommand{\doccls}[1]{\texttt{#1}}% document class name
\newcommand{\docclsopt}[1]{\texttt{#1}\index{#1 class option@\texttt{#1} class option}\index{class options!#1@\texttt{#1}}}% document class option name
\newcommand{\docclsoptdef}[1]{\hlred{\texttt{#1}}\label{clsopt:#1}\index{#1 class option@\texttt{#1} class option}\index{class options!#1@\texttt{#1}}}% document class option name defined
\newcommand{\docmsg}[2]{\bigskip\begin{fullwidth}\noindent\ttfamily#1\end{fullwidth}\medskip\par\noindent#2}
\newcommand{\docfilehook}[2]{\texttt{#1}\index{file hooks!#2}\index{#1@\texttt{#1}}}
\newcommand{\doccounter}[1]{\texttt{#1}\index{#1 counter@\texttt{#1} counter}}
% Generates the index
\usepackage{makeidx}
\makeindex
\usepackage{tikz}
\usepackage{amsthm}
\usepackage{thmtools}
\usepackage[framemethod=TikZ]{mdframed}
\usepackage{needspace}
\usepackage[T1]{fontenc}
\declaretheoremstyle[
spaceabove=\topsep,
spacebelow=\topsep,
numberwithin=chapter,
headfont=\normalfont\bfseries,
notefont=\normalfont\scshape,
notebraces={$\lbrack$}{$\rbrack$},
postheadhook={\textcolor{gray}{\rule[.6ex]{\linewidth}{0.4pt}}\\},
bodyfont=\normalfont\itshape,
mdframed={
backgroundcolor=gray,
linecolor=gray,
innertopmargin=6pt,
roundcorner=5pt,
innerbottommargin=6pt,
skipabove=\parsep,
skipbelow=\parsep },
postheadspace=\newline
]{theorembreak}
\declaretheorem[style=theorembreak,name=Theorem]{theorem}
\AtBeginEnvironment{theorem}{\Needspace{10\baselineskip}}
\begin{document}
\mainmatter
\chapter{Introduction}
\begin{theorem}[Theorem]
Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt.\footnote{This is a footnote within a theorem.}
\end{theorem}
\end{document}
答案1
这算是一种答案，尽管看起来是负面的。你的定理本质上是一个mdframed环境，而 tufte 类重新定义\footnote为\sidenote。所以你的例子可以归结为
\documentclass{tufte-book}
\usepackage{mdframed}
\begin{document}
\begin{mdframed}
Some text.
\sidenote{This is a side note.}
\end{mdframed}
\end{document}
这给出了错误
! Missing number, treated as zero. <to be read again> ] l.6 \sidenote{This is a side note.}
根据答案在 mdframed 环境中使用 sidenotes，
该命令
\sidenote等于\marginpar或\marginnote不允许在表格或框中使用。所以您不能使用它们。
这个答案是四年前的，也许不再适用，并且有一个解决方案。