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]
  • Character class intersection
    [\w&&[^\d]]
  • 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
Processing...

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 = "(?im)((?:(\w{1}|\d).+([\.?\!\)\s]|\b)?)+)|\s?([\w ]+[\.\?!] )" Local $sString = "What about... this sentence?" & @CRLF & _ "" & @CRLF & _ "Here's a list of things:" & @CRLF & _ "" & @CRLF & _ "* one," & @CRLF & _ " continued" & @CRLF & _ " - two." & @CRLF & _ "* three," & @CRLF & _ " - four" & @CRLF & _ " - five" & @CRLF & _ "" & @CRLF & _ "1. Numbered one," & @CRLF & _ " continued" & @CRLF & _ "2. numbered two." & @CRLF & _ "3. numbered three." & @CRLF & _ "" & @CRLF & _ "every sentence starts with a capital. let's have that rule. but" & @CRLF & _ "what is a sentence?" & @CRLF & _ "" & @CRLF & _ "42 is the answer." & @CRLF & _ "" & @CRLF & _ "I got a memory leak of the whole client-chat direcrive. sdf" & @CRLF & _ "" & @CRLF & _ "this is a sentence" & @CRLF & _ "that continues down here. while this is a different sentence. (can we find sentences in brackets?)" & @CRLF & _ "" & @CRLF & _ "Sentences sometimes (but not always), contain bracketed sections, e.g. as in this sentence; ok?" & @CRLF & _ "" & @CRLF & _ "a sentence with no final punctuation should end if double-spaced" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ " authorize.net Node.js filename-ish words & such don't terminate a sentence" & @CRLF & _ "" & @CRLF & _ "I want to move my website from example.net to example.com blah blah blah." & @CRLF & _ "" & @CRLF & _ "I want to move my website from example.net to example.com blah blah blah" & @CRLF & _ "" & @CRLF & _ "I want to move my website from example.net to _xCodexBlockxPlacexHolderx_" & @CRLF & _ " example.com blah blah blah." & @CRLF & _ "" & @CRLF & _ "_xCodexBlockxPlacexHolderx_" & @CRLF & _ "" & @CRLF & _ "More than a 10% with 1.5 to 2 global load, etc.) to 1st level Flume collectors." & @CRLF & _ "" & @CRLF & _ "I am using AngularJS 1.3.0, but even after upgrade to 1.4.9 it still happens. (That should be just ONE sentence.)" & @CRLF & _ "" & @CRLF & _ "A simple sentence, ending with punctuation." & @CRLF & _ "A sentence without end punctuatione, ending with double-space" & @CRLF & _ "" & @CRLF & _ ""A sentence in quotes." "Ok with that?" "punctuation after the close quote"!" & @CRLF & _ "###This is a heading" & @CRLF & _ "" & @CRLF & _ "Text in a link [is part of the sentence][1]." & @CRLF & _ "" & @CRLF & _ "Another sentence. And another sentence? End of file!" 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