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"
"
xsm

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 $sRegex = "(?xsm)^Date:\ (?P<date>.+?$)" & @CRLF & _ ".+?" & @CRLF & _ "^From:\ (?P<sender>.+?$)" & @CRLF & _ ".+?" & @CRLF & _ "^To:\ (?P<to>.+?$)" & @CRLF & _ ".+?" & @CRLF & _ "^cc:\ (?P<cc>.+?$)" & @CRLF & _ ".+?" & @CRLF & _ "^Subject:\ (?P<subject>.+?$)" Local $sString = "Message-ID: <3490571.1075846143093.JavaMail.evans@thyme>" & @CRLF & _ "Date: Wed, 8 Sep 1999 08:50:00 -0700 (PDT)" & @CRLF & _ "From: steven.kean@enron.com" & @CRLF & _ "To: kelly.kimberly@enron.com" & @CRLF & _ "Subject: Re: India And The WTO Services Negotiation" & @CRLF & _ "Mime-Version: 1.0" & @CRLF & _ "Content-Type: text/plain; charset=us-ascii" & @CRLF & _ "Content-Transfer-Encoding: 7bit" & @CRLF & _ "X-From: Steven J Kean" & @CRLF & _ "X-To: Kelly Kimberly" & @CRLF & _ "X-cc: " & @CRLF & _ "X-bcc: " & @CRLF & _ "X-Folder: \Steven_Kean_Dec2000_1\Notes Folders\All documents" & @CRLF & _ "X-Origin: KEAN-S" & @CRLF & _ "X-FileName: skean.nsf" & @CRLF & _ "" & @CRLF & _ "fyi" & @CRLF & _ "---------------------- Forwarded by Steven J Kean/HOU/EES on 09/08/99 03:49 " & @CRLF & _ "PM ---------------------------" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "Joe Hillings@ENRON" & @CRLF & _ "09/08/99 02:52 PM" & @CRLF & _ "To: Joe Hillings/Corp/Enron@Enron" & @CRLF & _ "cc: Sanjay Bhatnagar/ENRON_DEVELOPMENT@ENRON_DEVELOPMENT, Terence H " & @CRLF & _ "Thorn/ENRON_DEVELOPMENT@ENRON_DEVELOPMENT, Ashok " & @CRLF & _ "Mehta/ENRON_DEVELOPMENT@ENRON_DEVELOPMENT, John " & @CRLF & _ "Ambler/ENRON_DEVELOPMENT@ENRON_DEVELOPMENT, Steven J Kean/HOU/EES@EES, " & @CRLF & _ "Jeffrey Sherrick/Corp/Enron@Enron " & @CRLF & _ "Subject: Re: India And The WTO Services Negotiation " & @CRLF & _ "" & @CRLF & _ "Sanjay: Some information of possible interest to you. I attended a meeting " & @CRLF & _ "this afternoon of the Coalition of Service Industries, one of the lead groups " & @CRLF & _ "promoting a wide range of services including energy services in the upcoming " & @CRLF & _ "WTO GATTS 2000 negotiations. CSI President Bob Vastine was in Delhi last week " & @CRLF & _ "and met with CII to discuss the upcoming WTO. CII apparently has a committee " & @CRLF & _ "looking into the WTO. Bob says that he told them that energy services was " & @CRLF & _ "among the CSI recommendations and he recalls that CII said that they too have " & @CRLF & _ "an interest." & @CRLF & _ "" & @CRLF & _ "Since returning from the meeting I spoke with Kiran Pastricha and told her " & @CRLF & _ "the above. She actually arranged the meeting in Delhi. She asked that I send " & @CRLF & _ "her the packet of materials we distributed last week in Brussels and London. " & @CRLF & _ "One of her associates is leaving for India tomorrow and will take one of " & @CRLF & _ "these items to Delhi. " & @CRLF & _ "" & @CRLF & _ "Joe" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "Joe Hillings" & @CRLF & _ "09/08/99 11:57 AM" & @CRLF & _ "To: Sanjay Bhatnagar/ENRON_DEVELOPMENT@ENRON_DEVELOPMENT" & @CRLF & _ "cc: Terence H Thorn/ENRON_DEVELOPMENT@ENRON_DEVELOPMENT, Ashok " & @CRLF & _ "Mehta/ENRON_DEVELOPMENT@ENRON_DEVELOPMENT, John " & @CRLF & _ "Ambler/ENRON_DEVELOPMENT@ENRON_DEVELOPMENT, Steven J Kean/HOU/EES@EES, " & @CRLF & _ "Jeffrey Sherrick/Corp/Enron@Enron (bcc: Joe Hillings/Corp/Enron)" & @CRLF & _ "Subject: India And The WTO Services Negotiation" & @CRLF & _ "" & @CRLF & _ "Sanjay: First some information and then a request for your advice and " & @CRLF & _ "involvment." Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYFULLMATCH) ; Present the entire match result _ArrayDisplay($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