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

/
/
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)(### EXAMPLE ([0-9|[0-9]+))\n(```\n(```|```ps|```posh|```powershell)\n```\n)\n([\s\S]*?)\\`\\`\\`(\n\n|\n)([\s\S]*|\n)" Local $sString = "### EXAMPLE 123" & @CRLF & _ "```" & @CRLF & _ "```powershell" & @CRLF & _ "```" & @CRLF & _ "" & @CRLF & _ "$powershellVersion = '6 and lower'" & @CRLF & _ "$description = 'custom code fencing example WITH markdown description'" & @CRLF & _ "$names | Foreach-Object {} {" & @CRLF & _ " write-host 'indentation is respected'" & @CRLF & _ " Write-Host 'enormously long lines should not get cut off by our PlatyPS friends, ftw'" & @CRLF & _ "}" & @CRLF & _ "" & @CRLF & _ "$emptyNewlinesInCode = $True" & @CRLF & _ "\`\`\`" & @CRLF & _ "" & @CRLF & _ "The description would continue after first closing code fence." & @CRLF & _ "" & @CRLF & _ "This solution:" & @CRLF & _ "" & @CRLF & _ "- respects indentation" & @CRLF & _ "- will treat description as markdown" & @CRLF & _ "- seems close to what comes natural" & @CRLF & _ "" & @CRLF & _ "With this solution, the description itself could even contain code blocks:" & @CRLF & _ "" & @CRLF & _ "\`\`\`js" & @CRLF & _ "$var = docusaurus.New($config);" & @CRLF & _ "\`\`\`" & @CRLF & _ "" & @CRLF & _ "Pretty cool and the console becomes more readable too IMO, at least" & @CRLF & _ "you now see where the code ends and the explanation begins" & @CRLF & _ "" & @CRLF & _ "\`\`\`" & @CRLF & _ "$unMonicked = "should stay unmonicked, in other words powershell should not be added"" & @CRLF & _ " $indentationRespected = $True" & @CRLF & _ "$theBadNews - "that PlatyPS seems to cut off this line if a ." & @CRLF & _ "is detected, wtf"" & @CRLF & _ "\`\`\`" 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