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

r"
"
gm

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 = "(?m)r" Local $sString = "Ex1. This is a random sentence.1,7,9 This is a sentence followed by it." & @CRLF & _ "Output = This is a random sentence. 1,7,9 This is a sentence followed by it.`#space after the period will do." & @CRLF & _ "Ex2. I love football.1,7,24`I also like cricket." & @CRLF & _ "Output = I love football. 1,7,24`I also like cricket." & @CRLF & _ "" & @CRLF & _ "Ex3. ESD for undifferentiated cancers.[1][7]Cancers can be treata" & @CRLF & _ "ble." & @CRLF & _ "Output = ESD for undifferentiated cancers. [1][7]Cancers can be treatable. #space after the period" & @CRLF & _ "" & @CRLF & _ "EX4. |Age, n (%) | | |< | |" & @CRLF & _ "| | | |0.001 | |" & @CRLF & _ "| |> 65 years |641 (44.3) |28 (24.8) | |669 (42.9)|" & @CRLF & _ "| |? 65 years |806 (55.7) |85 (75.2) | |891 (57.1)|" & @CRLF & _ "# Tables should be untouched" & @CRLF & _ "EX5.75.6% vs. 54.0% # untouched" & @CRLF & _ "" & @CRLF & _ "EX6. ask@to.in # should be untouched" & @CRLF & _ "" & @CRLF & _ "EX7. Decimal numbers 22.3456 # should be untouched" & @CRLF & _ "" & @CRLF & _ "EX8." 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