Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression

/
/
g

Test String

Code Generator

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "\/\*[^*]*\*+([^\/*][^*]*\*+)*\/" & @CRLF & _ "" Local $sString = "/* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = */" & @CRLF & _ "" & @CRLF & _ "/* @TODO:" & @CRLF & _ " - Notes..." & @CRLF & _ "*/" & @CRLF & _ " " & @CRLF & _ "/* = = = Set Base Font Size = = = So 1em = 10px / 1.8em = 18px etc */" & @CRLF & _ "body { font-size: 62.5% }" & @CRLF & _ "" & @CRLF & _ "body, ul, li {" & @CRLF & _ " color: #333333;" & @CRLF & _ " font-family: 'Open Sans', verdana, arial, helvetica, helve, sans-serif;" & @CRLF & _ " font-weight: 400;" & @CRLF & _ "/* font-size: 1.4em; Default font = 14px normal weight Open Sans using #333333 */" & @CRLF & _ " line-height: 1.25em;" & @CRLF & _ "}" & @CRLF & _ "body {" & @CRLF & _ " margin: 0; /* Nav bar and footer need to fit edge to edge so no margins! */" & @CRLF & _ " padding: 0;" & @CRLF & _ " top: 0;" & @CRLF & _ " border-bottom: 1px #1C1C1C solid; /* To remove white space under the popup footer */" & @CRLF & _ "}" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "/* = = = Typography = = = */" & @CRLF & _ "/* Font choice was carefully considered, Open Sans is very popular so many visitors will already have it cached. */" & @CRLF & _ "/* Monda & Shadows into light are also quite popular so may be cached too */" & @CRLF & _ "/* = = = Headings = = = */" & @CRLF & _ "h1, h2, h3, h4, h5, h6 {" & @CRLF & _ " font-family: 'Monda', 'Trebuchet MS', verdana, arial, helvetica, helve, sans-serif;" & @CRLF & _ " font-weight: 400;" & @CRLF & _ " line-height: 1.2em;" & @CRLF & _ " letter-spacing: 1px;" & @CRLF & _ " color: #333333;" & @CRLF & _ " margin-top: 10px;" & @CRLF & _ " margin-bottom: 20px;" & @CRLF & _ "}" & @CRLF & _ "" Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH) Local $aFullArray[0] For $i = 0 To UBound($aArray) -1 _ArrayConcatenate($aFullArray, $aArray[$i]) Next $aArray = $aFullArray ; Present the entire match result _ArrayDisplay($aArray, "Result")

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm