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"
"
gim

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)^[\t  ]*host[\t  ]+(.+?)[\t  ]*\n(?:(?!(?:^[\t  ]*#.*\n)*[\t  ]*host\b)[\t  ]*(?:(\w+)\b(?:[\t  ]*=[\t  ]*|[\t  ]+)(.*)|#.*)?(?:\n|\Z))+" Local $sString = "Host test " & @CRLF & _ " Hostname test.domain.com" & @CRLF & _ " User james" & @CRLF & _ " Port 22" & @CRLF & _ " # Comment" & @CRLF & _ " IdentityFile ~/.ssh/key.pub" & @CRLF & _ "" & @CRLF & _ "# With 2 aliases" & @CRLF & _ "Host test2 test-2" & @CRLF & _ " Hostname test2.domain.com" & @CRLF & _ " User = james" & @CRLF & _ " Port=22" & @CRLF & _ " # Port 23" & @CRLF & _ " IdentityFile = ~/.ssh/key2.pub" & @CRLF & _ "" & @CRLF & _ "# For all hosts except test2, activate compression and set log level:" & @CRLF & _ "Host * !test2" & @CRLF & _ " Compression yes" & @CRLF & _ " LogLevel INFO" & @CRLF & _ "" & @CRLF & _ " IdentityFile ~/.ssh/id_rsa" & @CRLF & _ "" & @CRLF & _ "Host *.sweet.home" & @CRLF & _ " Hostname 192.168.2.17" & @CRLF & _ " User tom" & @CRLF & _ " IdentityFile "~/.ssh/id tom.pub" # If has spaces, then quote it." & @CRLF & _ "" & @CRLF & _ "# With a lot of spaces between lines" & @CRLF & _ "Host localhost" & @CRLF & _ "" & @CRLF & _ " Hostname 127.0.0.*" & @CRLF & _ "" & @CRLF & _ " IdentityFile ~/.ssh/id_rsa" & @CRLF & _ "" & @CRLF & _ "# Without empty lines between Host definitions:" & @CRLF & _ "Host dummy" & @CRLF & _ " Hostname ssh.dummy.com" & @CRLF & _ " User user" & @CRLF & _ "Host dummy2" & @CRLF & _ " Hostname ssh.dummy2.com" & @CRLF & _ " User user" 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