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

/
/
gmx

Test String

Code Generator

Language

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(?mx)(?|(?:\G(?!\A)(?<=\|)|^\|\h*\[x\]\h*\|)\h*\K([^|\n]+)(?<=\S)\h*\||\[x]\h*\K([^|\s!]+(?:\h*[^|\s]+)*))|" & @CRLF & _ "(?|(?:\G(?!\A)\||^\|\h*\[x]\h*!\h*\|)\h*\K([^|\n]+)(?<=\S)\h*|\[x]\h*!\h*\K([^|\s]+(?:\h*[^|\s]+)*))" Local $sString = "Test cases where it should match." & @CRLF & _ "- [x] Example task. | Task ends. [x] Another task." & @CRLF & _ "- [x] ! Example task. | This ends. [x] ! Another task." & @CRLF & _ "- [x] Example task! | Task ends. [x] Another task!" & @CRLF & _ "- [x] ! Example task! | This ends. [x] ! Another task!" & @CRLF & _ "" & @CRLF & _ "This is a sentence. [x] Task is here." & @CRLF & _ "Other text. Another [x] ! Task is here." & @CRLF & _ "" & @CRLF & _ "Must not match in the table." & @CRLF & _ "| | Task name | Plan | Actual | File |" & @CRLF & _ "| :---- | :-------------| :---------: | :---------: | :------------: |" & @CRLF & _ "| [x] | Task example. | 08:00-08:45 | 08:00-09:00 | [[task-one]] |" & @CRLF & _ "| [x] ! | Task example. | 08:00-08:45 | 08:00-09:00 | [[task-one]] |" & @CRLF & _ "" & @CRLF & _ "Groups expected:" & @CRLF & _ "$1: all text after [x]" & @CRLF & _ "$2: all text after [x] !" & @CRLF & _ "" & @CRLF & _ "Regex for each group:" & @CRLF & _ "$1: [^\|\s]\s*\[x\]\s*\K[^!|\n]*" & @CRLF & _ "$2: [^\|\s]\s*\[x\]\s*\!\s*\K[^|\n]*" & @CRLF & _ "" & @CRLF & _ "With the not-capturing group applied:" & @CRLF & _ "$1: (?:[^\|\s]\s*\[x\]\s*\K[^!|\n]*)" & @CRLF & _ "$2: (?:[^\|\s]\s*\[x\]\s*\!\s*\K[^|\n]*)" & @CRLF & _ "" & @CRLF & _ "The combined expression:" & @CRLF & _ "(?:[^\|\s]\s*\[x\]\s*\K([^!|\n]*))|(?:[^\|\s]\s*\[x\]\s*\!\s*\K([^|\n]*))" 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