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 $sRegex = "(?m)^[a-z]\..*$" Local $sString = "Instead of strings like " .*(?=\.)"" & @CRLF & _ "Lets have:" & @CRLF & _ "matchCriteria:" & @CRLF & _ "..... str from source" & @CRLF & _ "..... where" & @CRLF & _ "..... str startswith Text.Anything" & @CRLF & _ "# until one before period" & @CRLF & _ "..... until (source endswith Chars.Period) - 1" & @CRLF & _ "" & @CRLF & _ "Possibly a markup language (RegXML) that will store RegExp information for SOA messaging." & @CRLF & _ "" & @CRLF & _ "And a search tool for the desktop and for the web, with a WYSIWYG regexp editor that works as follows on any text:" & @CRLF & _ "" & @CRLF & _ "a. Load sample or text to search." & @CRLF & _ "" & @CRLF & _ "b. Mouse over and mark the words or "sections" you are intending to search for inside the text." & @CRLF & _ "" & @CRLF & _ "c. As you mark, each section is given its definitions: if its from the beginning or till the end of a word it will give the possible [b]Word (starting/ending/exactly) with markedword[b]." & @CRLF & _ "" & @CRLF & _ "d. When standing on a section, you can mark it as being a "formatted text" or other. (if the section has slashes, hyphens and periods etc, it will suggest this automatically)." & @CRLF & _ "" & @CRLF & _ "e. Famous formats can be chosen and automatically detected." & @CRLF & _ "" & @CRLF & _ "For example: Search for format of date: where day is: (any/between/less than) etc." & @CRLF & _ "" & @CRLF & _ "f. Didn't think out the REPLACE functionality yet." 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