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

/
/
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 $sRegex = "(?m)(^\040*)(\w*)(\040*)(=)(\040*)(\w*$|".*)" Local $sString = "# '#' character is used for comments - like in Bash" & @CRLF & _ "# '*' character is a wildcart character, ".*" is the regex equivalence" & @CRLF & _ "" & @CRLF & _ "# set x-ambles, the strings to be printed before, in-between and after the group of bitfields" & @CRLF & _ "preamble="#ifdef DEBUG"" & @CRLF & _ "interamble=#else" & @CRLF & _ "postamble=#endif" & @CRLF & _ "" & @CRLF & _ "# set the alignment value" & @CRLF & _ "alignment=16" & @CRLF & _ "" & @CRLF & _ "# bitfield names to be ignored" & @CRLF & _ "ignore=padding*,dummy*,doNotCare* " & @CRLF & _ "" & @CRLF & _ "# indent " & @CRLF & _ "indent=" "" & @CRLF & _ "" & @CRLF & _ "# padding type" & @CRLF & _ " padding = unsigned" & @CRLF & _ "" & @CRLF & _ "# this whould not be searched by C++ engine " & @CRLF & _ "files=*.h,*.c" & @CRLF & _ "" & @CRLF & _ "#prefix of type name to be searched" & @CRLF & _ "prefix=typedef" & @CRLF & _ "" & @CRLF & _ "#do or do not mirror" & @CRLF & _ "mirror=true" & @CRLF & _ "" & @CRLF & _ "#for regex testig" & @CRLF & _ "mirror=$" & @CRLF & _ "" 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