\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{Gael.langlais}
\pdfinfo{
  /Title (regex-angel.pdf)
  /Creator (Cheatography)
  /Author (Gael.langlais)
  /Subject (Regex Angel 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}{A3A3A3}
\definecolor{LightBackground}{HTML}{F3F3F3}
\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{Regex Angel Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Gael.langlais} via \textcolor{DarkBackground}{\uline{cheatography.com/169063/cs/35391/}}}
\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}Gael.langlais \\
  \uline{cheatography.com/gael-langlais} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 23rd March, 2024.\\
   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{1.34379 cm} x{3.63321 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Anchors}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{\textasciicircum{}}} & Start of line \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
{\bf{\$}} & End of line \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
{\bf{\textbackslash{}A}} & Start of string \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
{\bf{\textbackslash{}Z}} & End of string \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
{\bf{\textbackslash{}b}} & Word bondary \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
{\bf{\textbackslash{}B}} & Not word bondary \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
{\bf{\textbackslash{}\textless{}}} & Start of word \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
{\bf{\textbackslash{}\textgreater{}}} & End of word \tn 
% Row Count 8 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.74195 cm} x{3.23505 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Character Classes}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{\textbackslash{}c}} & Control character \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
{\bf{\textbackslash{}s}} & White space \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
{\bf{\textbackslash{}S}} & Not white space \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
{\bf{\textbackslash{}d}} & Digit \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
{\bf{\textbackslash{}D}} & Not digit \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
{\bf{\textbackslash{}w}} & Word \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
{\bf{\textbackslash{}W}} & Not word \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
{\bf{\textbackslash{}h}}hh & Hexadecimal digit \tn 
% Row Count 8 (+ 1)
% Row 8
\SetRowColor{LightBackground}
{\bf{\textbackslash{}O}}xxx & Octal digit \tn 
% Row Count 9 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.24425 cm} x{3.73275 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{POSIX}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{{[}:upper:{]}}} & Upper case \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
{\bf{{[}:lower:{]}}} & Lower case \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
{\bf{{[}:alpha:{]}}} & All letters \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
{\bf{{[}:alnum:{]}}} & All lettres and digits \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
{\bf{{[}:digit:{]}}} & All digits \tn 
% Row Count 10 (+ 2)
% Row 5
\SetRowColor{white}
{\bf{{[}:punct:{]}}} & `{[}!"\textbackslash{}\#\$\%\&'()*+, \textbackslash{}-./:;\textless{}=\textgreater{}?@\textbackslash{}{[} \textbackslash{}\textbackslash{}\textbackslash{}{]}\textasciicircum{}\_'\{|\}\textasciitilde{}{]}` \tn 
% Row Count 12 (+ 2)
% Row 6
\SetRowColor{LightBackground}
{\bf{{[}:blank:{]}}} & Space and Tab \tn 
% Row Count 14 (+ 2)
% Row 7
\SetRowColor{white}
{\bf{{[}:space:{]}}} & Blank characters `{[} \textbackslash{}t\textbackslash{}r\textbackslash{}n\textbackslash{}v\textbackslash{}f{]}` \tn 
% Row Count 16 (+ 2)
% Row 8
\SetRowColor{LightBackground}
{\bf{{[}:cntrl:{]}}} & Control Characters `{[}\textbackslash{}x00-\textbackslash{}x1F\textbackslash{}x7F{]}` \tn 
% Row Count 18 (+ 2)
% Row 9
\SetRowColor{white}
{\bf{{[}:graph:{]}}} & all except {\bf{{[}:space:{]}}} and {\bf{{[}:cntrl:{]}}} \tn 
% Row Count 20 (+ 2)
% Row 10
\SetRowColor{LightBackground}
{\bf{{[}:print:{]}}} & all except {\bf{{[}:cntrl:{]}}} \tn 
% Row Count 22 (+ 2)
% Row 11
\SetRowColor{white}
{\bf{{[}:word:{]}}} & `{[}A-Za-z0-9\_{]}` \tn 
% Row Count 24 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.18988 cm} x{2.78712 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Assertions}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{?=}} & Lookahead \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
{\bf{?!}} & Negative lookahead \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
{\bf{?\textless{}=}} & Lookbehind assertion \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
{\bf{?!=}} or {\bf{?\textless{}!}} & negetive loockbehind \tn 
% Row Count 5 (+ 2)
% Row 4
\SetRowColor{LightBackground}
{\bf{?\textgreater{}}} & Once-only subexpression \tn 
% Row Count 7 (+ 2)
% Row 5
\SetRowColor{white}
{\bf{?()}} & Condition If then \tn 
% Row Count 8 (+ 1)
% Row 6
\SetRowColor{LightBackground}
{\bf{?()|}} & Condition If then else \tn 
% Row Count 9 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{Ex: `test(?= word)` will match test only if it's followed by "` word`". the match return will be `test` string only}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.54287 cm} x{3.43413 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Quantifiers (match previous item x times)}}  \tn
% Row 0
\SetRowColor{LightBackground}
* & 0 or more \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
+ & 1 or more \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
? & 0 or 1 \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\{5\} & Exactly 5 \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\{,5\} & 0, 1, 2, 3, 4 and 5 \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
\{5,\} & 5 or more \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\{2,5\} & 2, 3, 4 or 5 \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
*? ,+?, ??, \{2,5\}? & Same as above but lazy (match as few characters as possible) \tn 
% Row Count 10 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}