由于“menukeys”包，需要额外的 \endgroup.\begin{document}

Question

我被错误消息“Extra \endgroup.\begin{document}”困住了。当我使用 menukeys 包时，会发生此错误。一个简短的工作示例是

\documentclass[12pt, oneside]{book}
\usepackage[a4paper, left=.7in, right=.7in, top=.7in,  bottom=.6in, footskip=.25in]{geometry}
\usepackage{color, xcolor}
\usepackage[T1]{fontenc}
\usepackage{multirow}

\usepackage{enumitem}
\setlist{noitemsep,topsep=0pt,parsep=0pt,partopsep=0pt,labelindent=1em,labelsep=10pt,leftmargin=*}

\usepackage{listings}
\newcommand{\rfunc}[1]{\lstinline{#1}}  %% Short for 'R inline'
\lstset{language=R}

\lstset{ %
    backgroundcolor=\color{white},  
    basicstyle=\small\ttfamily,
    breakatwhitespace=false,          % sets if automatic breaks should only happen at whitespace
    breaklines=true,                  % sets automatic line breaking
    %  captionpos=b,                    % sets the caption-position to bottom
    commentstyle=\color{black},       % comment style
    deletekeywords={...},             % if you want to delete keywords from the given language
    %  escapeinside={\%*}{*)},       % if you want to add LaTeX within your code
    %  extendedchars=true,           % lets you use non-ASCII characters; for 8-bits encodings only, does not work with UTF-8
    frame=single,                      % adds a frame around the code
    keepspaces=true, % keeps spaces in text, useful for keeping indentation of code (possibly needs columns=flexible)
    %  keywordstyle=\color{black},       % keyword style
    language=R,                      % the language of the code
    %  otherkeywords={*,...},          % if you want to add more keywords to the set
    numbers=left,                    % where to put the line-numbers; possible values are (none, left, right)
    %  numbersep=5pt,                  % how far the line-numbers are from the code
    %  numberstyle=\tiny\color{mygray},% the style that is used for the line-numbers
    rulecolor=\color{black},        
    %  showspaces=false,       % show spaces everywhere adding particular underscores; it overrides   'showstringspaces'
    showstringspaces=false,    % underline spaces within strings only
    %  showtabs=false,         % show tabs within strings adding particular underscores
    %  stepnumber=2,           % the step between two line-numbers. If it's 1, each line will be numbered
    stringstyle=\color{black}, % string literal style
    tabsize=2           % sets default tabsize to 2 spaces
}

\usepackage[os=win]{menukeys}
\renewmenumacro{\directory}{pathswithfolder}

\begin{document}

The use of \rfunc{panel} defines how different groups will be represented on the graph. When say \texttt{xyplot(y$\sim$x|z)} is entered on R console, R execute: \texttt{xyplot(y$\sim$x|z, panel=penal.xyplot)}, where \rfunc{panel.xyplot} is the default panel function. The \rfunc{lattice} package contains a number of predefined function that can call the other panel function, depending on the argument used.

\begin{lstlisting}
> xyplot(mpg ~ wt | factor(vs, levels = c(0, 1), 
+    labels = c("vs = 0", "vs = 1")), data = mtcars, 
+    type = c("p"), pch = 19,
+    panel = function( ... ){
+       panel.xyplot( ... )
+       panel.grid(... , h = -1, v = -1)
+       panel.loess( ... )} )
\end{lstlisting}

\end{document}

通过 MikeConsole 手动安装和更新软件包后的截图是

需要指导。