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
No Match

/
/
gm

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 = "(?m)^\[Error: +(?<source_path>(?<file>[^\s\n](?:[^\n:\\]+|\\.)+?)(?::(?<line>\d+)(?::(?<column>\d+)))?) *$" Local $sString = "/usr/local/lib/node_modules/stylus/bin/stylus:685" & @CRLF & _ " throw err;" & @CRLF & _ " ^" & @CRLF & _ "" & @CRLF & _ "[Error: /Users/user/path/to/stylus/file/invalid.styl:34:5" & @CRLF & _ " 30| ==/UserStyle== */" & @CRLF & _ " 31| " & @CRLF & _ " 32| @-moz-document regexp("https?://(www\\.)?typescriptlang.org/(v2/)?docs.*$")," & @CRLF & _ " 33| regexp("https?://(www\\.)?(staging-)?typescript\\.org/docs/.*$")" & @CRLF & _ " 34| error("compile error")" & @CRLF & _ "-----------^" & @CRLF & _ " 35| " & @CRLF & _ "" & @CRLF & _ "compile error" & @CRLF & _ "] {" & @CRLF & _ " fromStylus: true," & @CRLF & _ " lineno: 34," & @CRLF & _ " column: 5," & @CRLF & _ " filename: '/Users/disk0/git.local/stylus-stylus/static/test/testFiles/invalid.styl'," & @CRLF & _ " stylusStack: ''," & @CRLF & _ " input: '/* ==UserStyle==\n' +" & @CRLF & _ " '@name TypeScript Docs\n' +" & @CRLF & _ " '@description Expands width of code blocks and moves navigation bar fully to the left\n' +" & @CRLF & _ " '@version 0.0.12\n' +" & @CRLF & _ " '@namespace github.com/disk0/stylus/typescript.org/docs\n' +" & @CRLF & _ " '\n' +" & @CRLF & _ " '@author disk0 (github.com/disco0)\n' +" & @CRLF & _ " '@license MIT\n' +" & @CRLF & _ " '\n' +" & @CRLF & _ " '@preprocessor stylus\n' +" & @CRLF & _ " '\n' +" & @CRLF & _ " '@var select CodeFont "Font for code displayed on page." [\n' +" & @CRLF & _ " ' "Iosevka Extended*",\n' +" & @CRLF & _ " ' "Iosevka Expanded",\n' +" & @CRLF & _ " ' "Iosevka Term",\n' +" & @CRLF & _ " ' "Iosevka",\n' +" & @CRLF & _ " '\n' +" & @CRLF & _ " ' "SemanticHaskell",\n' +" & @CRLF & _ " ' "SemanticJavascript",\n' +" & @CRLF & _ " ' "SemanticCode",\n' +" & @CRLF & _ " ' "Hasklig",\n' +" & @CRLF & _ " '\n' +" & @CRLF & _ " ' "PragmataPro Mono Liga",\n' +" & @CRLF & _ " '\n' +" & @CRLF & _ " ' "monospace"\n' +" & @CRLF & _ " ']\n' +" & @CRLF & _ " '@var number CodeFontSize "Size of code in documentation" [ 14, 1, 500, 1, "px" ]\n' +" & @CRLF & _ " '@var number CodeFontWeight "Code font weight" [ 400, 100, 900, 100 ]\n' +" & @CRLF & _ " '@var number DocTextWidth "Width of text content in documentation" [ 1000, 300, 5000, 100, "px" ]\n' +" & @CRLF & _ " '==/UserStyle== */\n' +" & @CRLF & _ " '\n' +" & @CRLF & _ " '@-moz-document regexp("https?://(www\\\\.)?typescriptlang.org/(v2/)?docs.*$"),\n' +" & @CRLF & _ " '\t regexp("https?://(www\\\\.)?(staging-)?typescript\\\\.org/docs/.*$")\n' +" & @CRLF & _ " ' error("compile error")\n'" & @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