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)(\w+\s*\n*=\s*\n*)\{\n*\s*`((?:[^`](?!(?:\$\{|\n|(?:'[^`]*"|"[^`]*'))))*)`\n*\s*\}" Local $sString = "// Match!" & @CRLF & _ "<Component1" & @CRLF & _ " // Using backticks without utilizing their functionalities" & @CRLF & _ " className={`flex justify-center items-center gap-2`}" & @CRLF & _ " description={``}" & @CRLF & _ " content={" & @CRLF & _ " `These backticks are unnecessary`" & @CRLF & _ " }" & @CRLF & _ " // This is a crime, but I did take it into account" & @CRLF & _ " horrendousFormatting" & @CRLF & _ " =" & @CRLF & _ " {`Please never do something like this`}" & @CRLF & _ "/>" & @CRLF & _ "" & @CRLF & _ "// Multiple matches in a single line" & @CRLF & _ "<svg width={`100%`} height={`100%`} />" & @CRLF & _ "" & @CRLF & _ "// Cases where this regex won't match:" & @CRLF & _ "<Component2" & @CRLF & _ " // Non-string property" & @CRLF & _ " disabled={isDisabled}" & @CRLF & _ " // Quotes/Single quotes with unnecessary brackets" & @CRLF & _ " // (I have another regex that's better adapted for this!)" & @CRLF & _ " href={"https://regex101.com/library/l9MPcQ"}" & @CRLF & _ " // String templating" & @CRLF & _ " className={`flex items-center justify-center size-5 ${iconColor}`}" & @CRLF & _ " // Escaping BOTH " AND ' IN THE SAME STRING with backticks" & @CRLF & _ " title={`This string's backticks are "justified"`}" & @CRLF & _ " // Escaping line breaks with backticks" & @CRLF & _ " description={" & @CRLF & _ " `String with" & @CRLF & _ " a line break`" & @CRLF & _ " }" & @CRLF & _ " // "/'/` mismatch" & @CRLF & _ " content={`Yeah this will turn the rest of your file into a string"}" & @CRLF & _ ">" & @CRLF & _ " {icon}" & @CRLF & _ "" & @CRLF & _ " // No match since this is not a property" & @CRLF & _ " {` `}" & @CRLF & _ "" & @CRLF & _ " (Some people do this instead of using &nbsp;)" & @CRLF & _ "</Component2>" & @CRLF & _ "" Local $sSubst = "$1"$2"" 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