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"
"

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 = "\[weight][^\n]*(?:\n(?!$|\n)[^\n]*)*" Local $sString = "#########################" & @CRLF & _ "### MOSES CONFIG FILE ###" & @CRLF & _ "#########################" & @CRLF & _ "" & @CRLF & _ "# input factors " & @CRLF & _ "[input-factors]" & @CRLF & _ "0" & @CRLF & _ "" & @CRLF & _ "# mapping steps" & @CRLF & _ "[mapping]" & @CRLF & _ "0 T 0" & @CRLF & _ "" & @CRLF & _ "[distortion-limit]" & @CRLF & _ "6" & @CRLF & _ "" & @CRLF & _ "# feature functions" & @CRLF & _ "[feature]" & @CRLF & _ "UnknownWordPenalty" & @CRLF & _ "WordPenalty" & @CRLF & _ "PhrasePenalty" & @CRLF & _ "PhraseDictionaryMemory name=TranslationModel0 num-features=4 path=/home /gillin/jojomert/phrase-jojo/work.src-ref/training/model/phrase-table.gz input-factor=0 output-factor=0" & @CRLF & _ "LexicalReordering name=LexicalReordering0 num-features=6 type=wbe-msd-bidirectional-fe-allff input-factor=0 output-factor=0 path=/home/gillin/jojomert/phrase-jojo/work.src-ref/training/model/reordering-table.wbe-msd-bidirectional-fe.gz" & @CRLF & _ "Distortion" & @CRLF & _ "KENLM lazyken=0 name=LM0 factor=0 path=/home/gillin/jojomert/ru.kenlm order=5" & @CRLF & _ "" & @CRLF & _ "# dense weights for feature functions" & @CRLF & _ "[weight]" & @CRLF & _ "UnknownWordPenalty0= 1" & @CRLF & _ "WordPenalty0= -1" & @CRLF & _ "PhrasePenalty0= 0.2" & @CRLF & _ "TranslationModel0= 0.2 0.2 0.2 0.2" & @CRLF & _ "LexicalReordering0= 0.3 0.3 0.3 0.3 0.3 0.3" & @CRLF & _ "Distortion0= 0.3" & @CRLF & _ "LM0= 0.5" 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