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

Substitution

Processing...

Code Generator

Generated Code

#include <MsgBoxConstants.au3> ; to declare the Constants of MsgBox Local $sRegex = "(?m)[`\\]|\${" Local $sString = "// source https://stackoverflow.com/a/75688937/6404439" & @CRLF & _ "import React from 'react';" & @CRLF & _ "import SyntaxHighlighter from 'react-syntax-highlighter';" & @CRLF & _ "import { a11yDark } from 'react-syntax-highlighter/dist/esm/styles/hljs';" & @CRLF & _ "" & @CRLF & _ "const CodeBlock: React.FC<{ codestring: string }> = ({ codestring }) => {" & @CRLF & _ " return (" & @CRLF & _ " <SyntaxHighlighter" & @CRLF & _ " language="javascript"" & @CRLF & _ " style={a11yDark}" & @CRLF & _ " showLineNumbers>" & @CRLF & _ " {codestring}" & @CRLF & _ " </SyntaxHighlighter>" & @CRLF & _ " );" & @CRLF & _ "};" & @CRLF & _ "" & @CRLF & _ "function App() {" & @CRLF & _ "" & @CRLF & _ " var code = `function $initHighlight(block, cls) {" & @CRLF & _ " try {" & @CRLF & _ " if (cls.search(/\bno\-highlight\b/) != -1)" & @CRLF & _ " return process(block, true, 0x0F) +" & @CRLF & _ " \` class="\${cls}"\`;" & @CRLF & _ " } catch (e) {" & @CRLF & _ " /* handle exception */" & @CRLF & _ " }" & @CRLF & _ " for (var i = 0 / 2; i < classes.length; i++) {" & @CRLF & _ " if (checkCondition(classes[i]) === undefined)" & @CRLF & _ " return /\d+[\s/]/g;" & @CRLF & _ " }" & @CRLF & _ " return 0xA;" & @CRLF & _ " }" & @CRLF & _ "" & @CRLF & _ " export $initHighlight;`;" & @CRLF & _ "" & @CRLF & _ " return (" & @CRLF & _ " <div className="w-1/2 bg-blue-700">" & @CRLF & _ " <CodeBlock codestring={code} />" & @CRLF & _ " </div>" & @CRLF & _ " );" & @CRLF & _ "}" & @CRLF & _ "" & @CRLF & _ "export default App;" Local $sSubst = "\\$&" Local $sResult = StringRegExpReplace($sString, $sRegex, $sSubst) MsgBox($MB_SYSTEMMODAL, "Result", $sResult)

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