Regular Expressions 101

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  • Unit Tests (25)

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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

r"
"
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)^(?:(?P<type>(?:feat)|(?:fix)|(?:docs)|(?:style)|(?:refactor)|(?:test)|(?:merge)|(?:chore))(?: \((?P<issue>.+)\))?: (?P<subject>[A-Z0-9].{0,48}(?!\.).?)\n?)(?:\n(?P<body>(?:.*\n?)+))*$" Local $sString = "feat: Summarize changes in around 50 characters or less" & @CRLF & _ "" & @CRLF & _ "More detailed explanatory text, if necessary. Wrap it to about 72" & @CRLF & _ "characters or so. In some contexts, the first line is treated as the" & @CRLF & _ "subject of the commit and the rest of the text as the body. The" & @CRLF & _ "blank line separating the summary from the body is critical (unless" & @CRLF & _ "you omit the body entirely); various tools like `log`, `shortlog`" & @CRLF & _ "and `rebase` can get confused if you run the two together." & @CRLF & _ "" & @CRLF & _ "Explain the problem that this commit is solving. Focus on why you" & @CRLF & _ "are making this change as opposed to how (the code explains that)." & @CRLF & _ "Are there side effects or other unintuitive consequences of this" & @CRLF & _ "change? Here's the place to explain them." & @CRLF & _ "" & @CRLF & _ "Further paragraphs come after blank lines." & @CRLF & _ "" & @CRLF & _ " - Bullet points are okay, too" & @CRLF & _ "" & @CRLF & _ " - Typically a hyphen or asterisk is used for the bullet, preceded" & @CRLF & _ " by a single space, with blank lines in between, but conventions" & @CRLF & _ " vary here" & @CRLF & _ "" & @CRLF & _ "If you use an issue tracker, put references to them at the bottom," & @CRLF & _ "like this:" & @CRLF & _ "" & @CRLF & _ "Resolves: #123" & @CRLF & _ "See also: #456, #789" 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