\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{frozencookie}
\pdfinfo{
  /Title (regular-expressions.pdf)
  /Creator (Cheatography)
  /Author (frozencookie)
  /Subject (Regular Expressions Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{00A326}
\definecolor{LightBackground}{HTML}{EFF9F1}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Regular Expressions Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{frozencookie} via \textcolor{DarkBackground}{\uline{cheatography.com/197909/cs/41837/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}frozencookie \\
  \uline{cheatography.com/frozencookie} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 23rd December, 2023.\\
   Updated 23rd December, 2023.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{p{0.64701 cm} x{4.32999 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{普通字符}}  \tn
% Row 0
\SetRowColor{LightBackground}
. & 匹配除换行符（\textbackslash{}n、\textbackslash{}r）之外的任何单个字符 \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
{[}ABC{]} & 匹配 {[}...{]} 中的所有字符 \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
{[}\textasciicircum{}ABC{]} & 匹配除了 {[}...{]} 中字符的所有字符 \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
{[}A-Z{]} & {[}A-Z{]} \seqsplit{表示一个区间，匹配所有大写字母} \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
{[}a-z{]} & {[}a-z{]} \seqsplit{表示一个区间，匹配所有小写字母} \tn 
% Row Count 9 (+ 2)
% Row 5
\SetRowColor{white}
{[}\textbackslash{}s\textbackslash{}S{]} & 匹配所有 \tn 
% Row Count 11 (+ 2)
% Row 6
\SetRowColor{LightBackground}
(a|b) & a或b \tn 
% Row Count 12 (+ 1)
% Row 7
\SetRowColor{white}
(...) & 组 \tn 
% Row Count 13 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\{n\} & \{\}前的内容重复n次 \tn 
% Row Count 14 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.4977 cm} x{4.4793 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{字符}}  \tn
% Row 0
\SetRowColor{LightBackground}
\textbackslash{}c x & 匹配由 x 指明的控制字符 \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\textbackslash{}s & \seqsplit{匹配任何空白字符，包括空格、制表符、换页符等等} \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\textbackslash{}S & \seqsplit{匹配任何非空白字符} \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
\textbackslash{}d & 匹配一个数字字符 \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\textbackslash{}D & \seqsplit{匹配一个非数字字符} \tn 
% Row Count 6 (+ 1)
% Row 5
\SetRowColor{white}
\textbackslash{}w & \seqsplit{匹配字母、数字、下划线} \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\textbackslash{}W & \seqsplit{匹配非字母、数字、下划线} \tn 
% Row Count 8 (+ 1)
% Row 7
\SetRowColor{white}
\textbackslash{}xn & 匹配 n，其中 n \seqsplit{为十六进制转义值。十六进制转义值必须为确定的两个数字长} \tn 
% Row Count 11 (+ 3)
% Row 8
\SetRowColor{LightBackground}
\textbackslash{}On & 匹配 n，其中 n 为八进制转义值 \tn 
% Row Count 13 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.4977 cm} x{4.4793 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{量词}}  \tn
% Row 0
\SetRowColor{LightBackground}
* & \seqsplit{匹配前面的子表达式零次或多次} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
+ & \seqsplit{匹配前面的子表达式一次或多次} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
? & \seqsplit{匹配前面的子表达式零次或一次} \tn 
% Row Count 6 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{\seqsplit{给一个量词加一个?使它变成非贪婪模式}}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.4977 cm} x{4.4793 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{锚点}}  \tn
% Row 0
\SetRowColor{LightBackground}
\textasciicircum{} & \seqsplit{字符串的开头，或多行模式中行的开头} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\textbackslash{}A & 字符串的开头 \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\$ & \seqsplit{字符串的结束，或多行模式中行的结束} \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
\textbackslash{}Z & 字符串的结束 \tn 
% Row Count 6 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\textbackslash{}b & \seqsplit{匹配一个单词边界，也就是指单词和空格间的位置} \tn 
% Row Count 8 (+ 2)
% Row 5
\SetRowColor{white}
\textbackslash{}B & 匹配非单词边界 \tn 
% Row Count 9 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\textbackslash{}\textless{} & 单词开头 \tn 
% Row Count 10 (+ 1)
% Row 7
\SetRowColor{white}
\textbackslash{}\textgreater{} & 单词结尾 \tn 
% Row Count 11 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.4977 cm} x{4.4793 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{转义序列}}  \tn
% Row 0
\SetRowColor{LightBackground}
\textbackslash{} & 转义跟随的字符 \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\textbackslash{}Q & 开始文本序列 \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\textbackslash{}E & 结束文本序列 \tn 
% Row Count 3 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{\seqsplit{转义是一种将在正则表达式中具有特殊含义的字符按原始含义处理，而不是将其作为特殊字符处理的方法。}}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.59724 cm} x{4.37976 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{特殊字符}}  \tn
% Row 0
\SetRowColor{LightBackground}
\textbackslash{}n & 换行符 \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\textbackslash{}r & 回车 \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\textbackslash{}t & 制表符 \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\textbackslash{}v & 竖向制表符 \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\textbackslash{}f & 换页符 \tn 
% Row Count 5 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.4977 cm} x{4.4793 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{模式}}  \tn
% Row 0
\SetRowColor{LightBackground}
g & 全局匹配 \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
i & \seqsplit{将匹配设置为不区分大小写} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
m & \seqsplit{多行匹配，使边界字符} \textasciicircum{} 和 \$ \seqsplit{匹配每一行的开头和结尾，记住是多行，而不是整个字符串的开头和结尾} \tn 
% Row Count 6 (+ 4)
% Row 3
\SetRowColor{white}
s & 默认情况下的圆点 . 是匹配除换行符 \textbackslash{}n \seqsplit{之外的任何字符，加上} s 修饰符之后, . 中包含换行符 \tn 
% Row Count 10 (+ 4)
% Row 4
\SetRowColor{LightBackground}
x & \seqsplit{模式中允许注释和空格} \tn 
% Row Count 11 (+ 1)
% Row 5
\SetRowColor{white}
e & 评估更换 \tn 
% Row Count 12 (+ 1)
% Row 6
\SetRowColor{LightBackground}
U & 非贪婪模式 \tn 
% Row Count 13 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{0.9954 cm} x{3.9816 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{断言}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{?=pattern} & \seqsplit{正向肯定预查，在任何匹配pattern的字符串开始处匹配查找字符串} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
?!pattern & \seqsplit{正向否定预查，在任何不匹配pattern的字符串开始处匹配查找字符串} \tn 
% Row Count 6 (+ 3)
% Row 2
\SetRowColor{LightBackground}
?\textless{}=pattern & \seqsplit{反向肯定预查，与正向肯定预查类似，只是方向相反} \tn 
% Row Count 9 (+ 3)
% Row 3
\SetRowColor{white}
?\textless{}!pattern & \seqsplit{反向否定预查，与正向否定预查类似，只是方向相反} \tn 
% Row Count 12 (+ 3)
% Row 4
\SetRowColor{LightBackground}
?\textgreater{} & 一次性次表达式 \tn 
% Row Count 13 (+ 1)
% Row 5
\SetRowColor{white}
() & 捕获组，使用括号 () \seqsplit{将一部分正则表达式模式组合成一个捕获组} \tn 
% Row Count 16 (+ 3)
% Row 6
\SetRowColor{LightBackground}
?() & 条件 {[}if then{]} \tn 
% Row Count 17 (+ 1)
% Row 7
\SetRowColor{white}
?()| & 条件 {[}if then else{]} \tn 
% Row Count 18 (+ 1)
% Row 8
\SetRowColor{LightBackground}
?\# & 注释 \tn 
% Row Count 19 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.74655 cm} x{4.23045 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{字符串替换}}  \tn
% Row 0
\SetRowColor{LightBackground}
\$n & \seqsplit{替换已编号的组，替换字符串中n捕获组所匹配的最后一个子字符串，其中n是捕获组的索引} \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
\$\{name\} & 替换命名组 \tn 
% Row Count 6 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\$\$ & \seqsplit{将在替换的字符串中插入文本"\$"字符} \tn 
% Row Count 8 (+ 2)
% Row 3
\SetRowColor{white}
\$\& & 替换整个匹配项 \tn 
% Row Count 9 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\$` & \seqsplit{替换匹配项前的文本} \tn 
% Row Count 10 (+ 1)
% Row 5
\SetRowColor{white}
\$' & \seqsplit{替换匹配项后的文本} \tn 
% Row Count 11 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\$+ & 替换最后捕获的组 \tn 
% Row Count 12 (+ 1)
% Row 7
\SetRowColor{white}
\$\_ & \seqsplit{替换整个输入字符串} \tn 
% Row Count 13 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}