我想为我的培训目的创建备忘单。为此，我使用了 latex。
以下是乳胶代码 -
\documentclass[10pt,english,landscape]{article}
\usepackage{multicol}
\usepackage{calc}
\usepackage[landscape]{geometry}
\usepackage{color,graphicx,overpic}
\usepackage[T1]{fontenc}
\usepackage[bitstream-charter]{mathdesign}
\usepackage[utf8]{inputenc}
\usepackage{url}
\usepackage{amsfonts}
\usepackage{array,booktabs}
\usepackage{textcomp}
\usepackage[usenames,dvipsnames,table]{xcolor}
\usepackage[most]{tcolorbox}
\usepackage{tabularx}
\usepackage{multirow}
\usepackage{colortbl}
\usepackage{tikz}
\usepackage{environ}
\usetikzlibrary{calc}
\pgfdeclarelayer{background}
\pgfdeclarelayer{foreground}
\pgfsetlayers{background,main,foreground}
\geometry{top=-0.5cm,left=1cm,right=1cm,bottom=1cm}
\pagestyle{empty} % Turn off header and footer
% \renewcommand\rmdefault{phv} % Arial
% \renewcommand\sfdefault{phv} % Arial
% Redefine section commands to use less space
\makeatletter
\renewcommand{\section}{\@startsection{section}{1}{0mm}%
{-1ex plus -.5ex minus -.2ex}%
{0.5ex plus .2ex}%x
{\normalfont\large\bfseries}}
\renewcommand{\subsection}{\@startsection{subsection}{2}{0mm}%
{-1explus -.5ex minus -.2ex}%
{0.5ex plus .2ex}%
{\normalfont\normalsize\bfseries}}
\renewcommand{\subsubsection}{\@startsection{subsubsection}{3}{0mm}%
{-1ex plus -.5ex minus -.2ex}%
{1ex plus .2ex}%
{\normalfont\small\bfseries}}
\makeatother
\setcounter{secnumdepth}{0} % Don't print section numbers
\setlength{\parindent}{0pt}
\setlength{\parskip}{0pt plus 0.5ex}
\definecolor{TableHead}{rgb}{0.353, 0.329, 0.667}
\definecolor{TableRow}{rgb}{0.816, 0.812, 0.902}
\NewEnviron{keys}[1]{
% \begin{center}
\smallskip
\begin{tikzpicture}
\rowcolors{1}{}{TableRow}
\centering
\node (tbl) [inner sep=0pt] {
\begin{tabular}{p{4.2cm}p{3.25cm}}
\rowcolor{TableHead}
\multicolumn{2}{l}{\normalsize\textbf{\color{white}{#1}}}\parbox{0pt}{\rule{0pt}{0.3ex+\baselineskip}}\\
\BODY
\arrayrulecolor{TableHead}\specialrule{.17em}{0em}{.2em}
\end{tabular}};
\begin{pgfonlayer}{background}
\draw[rounded corners=2pt,top color=TableHead,bottom color=TableHead, draw=white]
($(tbl.north west)-(0,-0.05)$) rectangle ($(tbl.north east)-(0.0,0.15)$);
\draw[rounded corners=2pt,top color=TableHead,bottom color=TableHead, draw=white]
($(tbl.south west)-(0.0,-0.11)$) rectangle ($(tbl.south east)-(-0.0,-0.02)$);
\end{pgfonlayer}
\end{tikzpicture}
% \end{center}
}
\begin{document}
\raggedright\
\begin{center}
\Large{\underline{Emacs Cheatsheet}}
\end{center}
\footnotesize
\begin{multicols}{3}
\centering\section{Basic}
\begin{keys}{Glossary}
Control (Ctrl) key & \texttt{C} & \texttt{C key for your OS} \\
Alt (Meta) key & \texttt{M} & \texttt{M Key for your OS} \\
Shift key & \texttt{S} & \texttt{M Key for your OS} \\
Command (Super) key & \texttt{CMD} & \texttt{M Key for your OS} \\
Function (Fn) key & \texttt{fn} & \texttt{M Key for your OS} \\
Home/end & \texttt{fn-left / fn-right} & \texttt{M Key for your OS} \\
\end{keys}
\begin{keys}{Basic}
Execute command by name & \texttt{M-x} \\
Cancel command & \texttt{C-g} \\
Exit Emacs & \texttt{C-x C-c} \\
Help: describe a key combination & \texttt{C-h k} \\
Help: describe a function & \texttt{C-h f} \\
\end{keys}
\end{multicols}
\end{document}
当我编译代码时出现错误Extra alignment tab has been changed to \cr. \end{keys}。
我希望一些表有 2 列，一些表有 3 列。
我怎样才能实现它？
答案1
一个可能的答案是向您的环境添加另一个参数。以下代码中的缺点是：每列都具有相同的类型（相同的宽度）。也许您可以考虑tabularx具有可调整列宽的环境。
\documentclass[10pt,english,landscape]{article}
\usepackage{multicol}
\usepackage{calc}
\usepackage[landscape]{geometry}
\usepackage{color,graphicx,overpic}
\usepackage[T1]{fontenc}
\usepackage[bitstream-charter]{mathdesign}
\usepackage[utf8]{inputenc}
\usepackage{url}
\usepackage{amsfonts}
\usepackage{array,booktabs}
\usepackage{textcomp}
\usepackage[usenames,dvipsnames,table]{xcolor}
\usepackage[most]{tcolorbox}
\usepackage{tabularx}
\usepackage{multirow}
\usepackage{colortbl}
\usepackage{tikz}
\usepackage{environ}
\usetikzlibrary{calc}
\pgfdeclarelayer{background}
\pgfdeclarelayer{foreground}
\pgfsetlayers{background,main,foreground}
\geometry{top=-0.5cm,left=1cm,right=1cm,bottom=1cm}
\pagestyle{empty} % Turn off header and footer
% \renewcommand\rmdefault{phv} % Arial
% \renewcommand\sfdefault{phv} % Arial
% Redefine section commands to use less space
\makeatletter
\renewcommand{\section}{\@startsection{section}{1}{0mm}%
{-1ex plus -.5ex minus -.2ex}%
{0.5ex plus .2ex}%x
{\normalfont\large\bfseries}}
\renewcommand{\subsection}{\@startsection{subsection}{2}{0mm}%
{-1explus -.5ex minus -.2ex}%
{0.5ex plus .2ex}%
{\normalfont\normalsize\bfseries}}
\renewcommand{\subsubsection}{\@startsection{subsubsection}{3}{0mm}%
{-1ex plus -.5ex minus -.2ex}%
{1ex plus .2ex}%
{\normalfont\small\bfseries}}
\makeatother
\setcounter{secnumdepth}{0} % Don't print section numbers
\setlength{\parindent}{0pt}
\setlength{\parskip}{0pt plus 0.5ex}
\definecolor{TableHead}{rgb}{0.353, 0.329, 0.667}
\definecolor{TableRow}{rgb}{0.816, 0.812, 0.902}
\NewEnviron{keys}[2][2]{% <-- Modified by default, 2 columns
% \begin{center}
\smallskip
\begin{tikzpicture}
\rowcolors{1}{}{TableRow}
\centering
\node (tbl) [inner sep=0pt] {
\begin{tabular}{*{#1}{p{3.25cm}}} % <-- Modified
\rowcolor{TableHead}
\multicolumn{#1}{l}{\normalsize\textbf{\color{white}{#2}}}\parbox{0pt}{\rule{0pt}{0.3ex+\baselineskip}}\\ % <-- Modified
\BODY
\arrayrulecolor{TableHead}\specialrule{.17em}{0em}{.2em}
\end{tabular}};
\begin{pgfonlayer}{background}
\draw[rounded corners=2pt,top color=TableHead,bottom color=TableHead, draw=white]
($(tbl.north west)-(0,-0.05)$) rectangle ($(tbl.north east)-(0.0,0.15)$);
\draw[rounded corners=2pt,top color=TableHead,bottom color=TableHead, draw=white]
($(tbl.south west)-(0.0,-0.11)$) rectangle ($(tbl.south east)-(-0.0,-0.02)$);
\end{pgfonlayer}
\end{tikzpicture}
% \end{center}
}
\begin{document}
\raggedright\
\begin{center}
\Large{\underline{Emacs Cheatsheet}}
\end{center}
\footnotesize
\begin{multicols}{2}
\centering\section{Basic}
\begin{keys}[3]{Glossary} % <-- use the optional parameter
Control (Ctrl) key & \texttt{C} & \texttt{C key for your OS} \\
Alt (Meta) key & \texttt{M} & \texttt{M Key for your OS} \\
Shift key & \texttt{S} & \texttt{M Key for your OS} \\
Command (Super) key & \texttt{CMD} & \texttt{M Key for your OS} \\
Function (Fn) key & \texttt{fn} & \texttt{M Key for your OS} \\
Home/end & \texttt{fn-left / fn-right} & \texttt{M Key for your OS} \\
\end{keys}
\begin{keys}{Basic}
Execute command by name & \texttt{M-x} \\
Cancel command & \texttt{C-g} \\
Exit Emacs & \texttt{C-x C-c} \\
Help: describe a key combination & \texttt{C-h k} \\
Help: describe a function & \texttt{C-h f} \\
\end{keys}
\end{multicols}
\end{document}