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

/
/
gmui

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 = "(?mui)(?:[^\p{Script=Latin}\s\w;:.,\-[\](){}'"+\/=<>])\B|(?:(?:[\p{Script=Latin}]|[^\s\w;:.,\-[\](){}'"+\/=<>]){2,}(?:(?:[\p{Script=Latin}]|[^\s\w+.,–:;\/\\=<>])?(?:[\p{Script=Latin}]|[^\s\w;\-:.,\[\](){}'"+\/\\=<>]))*)|(?:(?:[0-9\p{Script=Latin}]|[^\s\w;:.,[\](){}\-'"+\/\\=<>])(?:(?:[0-9\p{Script=Latin}]|[^\s\w+\-:;\/\\=<>])?(?:[0-9\p{Script=Latin}]|[^\s\w;:.,\-[\](){}'"+\/\\=<>]))*)" Local $sString = "Bão Yagi (được Việt Nam định danh là bão số 3, được phía Philippines đặt tên bão Enteng - tiếng Anh: Severe Tropical Storm Enteng , nguyên văn 'Bão nhiệt đới dữ dội Enteng')" & @CRLF & _ "" & @CRLF & _ "Some legal "[d]ocuments" contain corrected spel[l]ing, gram(m)ar, or simple typos; and lots of references[1]. By Extension, I included curl{e}y brackets, but not tag brack<e>ts, which are not seenin modern legal documents." & @CRLF & _ "" & @CRLF & _ "These.are.properly.separated.even.U.S.A., and multiple punctuations are properly ignored." & @CRLF & _ "" & @CRLF & _ "A. Multiple" & @CRLF & _ "B. Choices" & @CRLF & _ "" & @CRLF & _ "-ABC-DEF-" & @CRLF & _ "-A-B-C-D-" & @CRLF & _ "-1-2-3-4-" & @CRLF & _ "-test-" & @CRLF & _ "" & @CRLF & _ ".ABC.DEF." & @CRLF & _ ".AB.CD.EF.D." & @CRLF & _ ".A.B.C.D.E." & @CRLF & _ ".123.456.789." & @CRLF & _ ".12.34.56.78." & @CRLF & _ ".1.2.3.4." & @CRLF & _ "" & @CRLF & _ "cod3 var1aBl3s" & @CRLF & _ "test.U.S.A.test" & @CRLF & _ "" & @CRLF & _ "We'd want hyphenated words in cases when large words are broken for wrapping in tight column news papers/megazines, while we can still properly separate numbers such as "30-35 pages"." & @CRLF & _ "" & @CRLF & _ "Non-Latin character are separated per character:" & @CRLF & _ "出典: フリー百科事典『ウィキペディア(Wikipedia)』" & @CRLF & _ "ウィキペディアには現在この名前の項目はありません。" & @CRLF & _ "" & @CRLF & _ "Acceptable failed cases:" & @CRLF & _ "" & @CRLF & _ "- [E]xpected: "[" is considered external "wrapper/enclosure", while the internal "wrappers" are included so that they can be further processed/removed in the future." & @CRLF & _ "" & @CRLF & _ "- test.U.S.A.test: this happens when no space trailing textContents of a block-level elemetn in HTML files." & @CRLF & _ "" & @CRLF & _ "- 『ウィキペディア(Wikipedia)』: mixed languages" & @CRLF & _ "" & @CRLF & _ "- CamelCasing s not separated, but can be easily separated in "post-processing step, even though _snake_casing_ works fine by happenstance." & @CRLF & _ "" & @CRLF & _ "-cod3 var1aBl3s: mixing letters and numbers. It's not intentional, but not a big deal when the side-effect is new word is always started with a number." 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