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"
"
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)^\d+(?:\.\d+)* .*(?:\r?\n(?!\d+(?:\.\d+)* ).*)*" Local $sString = "I.S. EN 60601-1:2006&A1:2013&AC:2014&A12:2014" & @CRLF & _ "" & @CRLF & _ "60601-1 © IEC:2005 " & @CRLF & _ "60601-1 © IEC:2005" & @CRLF & _ "" & @CRLF & _ "– 337 – " & @CRLF & _ "– 169 –" & @CRLF & _ "" & @CRLF & _ "12.4.5.4 Other ME EQUIPMENT producing diagnostic or therapeutic radiation " & @CRLF & _ "When applicable, the MANUFACTURER shall address in the RISK MANAGEMENT PROCESS the " & @CRLF & _ "RISKS associated with ME EQUIPMENT producing diagnostic or therapeutic radiation other than " & @CRLF & _ "for diagnostic X-rays and radiotherapy (see 12.4.5.2 and 12.4.5.3). " & @CRLF & _ "" & @CRLF & _ "Compliance is checked by inspection of the RISK MANAGEMENT FILE." & @CRLF & _ "" & @CRLF & _ "12.4.6 Diagnostic or therapeutic acoustic pressure " & @CRLF & _ "When applicable, the MANUFACTURER shall address in the RISK MANAGEMENT PROCESS the " & @CRLF & _ "RISKS associated with diagnostic or therapeutic acoustic pressure. " & @CRLF & _ "" & @CRLF & _ "Compliance is checked by inspection of the RISK MANAGEMENT FILE." & @CRLF & _ "" & @CRLF & _ "13 * HAZARDOUS SITUATIONS and fault conditions" & @CRLF & _ "" & @CRLF & _ "13.1 Specific HAZARDOUS SITUATIONS" & @CRLF & _ "" & @CRLF & _ "* General " & @CRLF & _ "" & @CRLF & _ "13.1.1 " & @CRLF & _ "When applying the SINGLE FAULT CONDITIONS as described in 4.7 and listed in 13.2, one at a " & @CRLF & _ "time, none of the HAZARDOUS SITUATIONS in 13.1.2 to 13.1.4 (inclusive) shall occur in the " & @CRLF & _ "ME EQUIPMENT." & @CRLF & _ "" & @CRLF & _ "The failure of any one component at a time, which could result in a HAZARDOUS SITUATION, is " & @CRLF & _ "described in 4.7. " & @CRLF & _ "" & @CRLF & _ "* Emissions, deformation of ENCLOSURE or exceeding maximum temperature " & @CRLF & _ "" & @CRLF & _ "13.1.2 " & @CRLF & _ "The following HAZARDOUS SITUATIONS shall not occur: " & @CRLF & _ "– emission of flames, molten metal, poisonous or ignitable substance in hazardous " & @CRLF & _ "" & @CRLF & _ "quantities; " & @CRLF & _ "" & @CRLF & _ "– deformation of ENCLOSURES to such an extent that compliance with 15.3.1 is impaired; " & @CRLF & _ "– " & @CRLF & _ "" & @CRLF & _ "temperatures of APPLIED PARTS exceeding the allowed values identified in Table 24 when " & @CRLF & _ "measured as described in 11.1.3; " & @CRLF & _ "temperatures of ME EQUIPMENT parts that are not APPLIED PARTS but are likely to be " & @CRLF & _ "touched, exceeding the allowable values in Table 23 when measured and adjusted as " & @CRLF & _ "described in 11.1.3; " & @CRLF & _ "" & @CRLF & _ "– " & @CRLF & _ "" & @CRLF & _ "– exceeding the allowable values for “other components and materials” identified in Table 22 " & @CRLF & _ "times 1,5 minus 12,5 °C. Limits for windings are found in Table 26, Table 27 and Table 31. " & @CRLF & _ "In all other cases, the allowable values of Table 22 apply. " & @CRLF & _ "" & @CRLF & _ "Temperatures shall be measured using the method described in 11.1.3. " & @CRLF & _ "" & @CRLF & _ "The SINGLE FAULT CONDITIONS in 4.7, 8.1 b), 8.7.2 and 13.2.2, with regard to the emission of " & @CRLF & _ "flames, molten metal or ignitable substances, shall not be applied to parts and components " & @CRLF & _ "where: " & @CRLF & _ "– The construction or the supply circuit limits the power dissipation in SINGLE FAULT " & @CRLF & _ "" & @CRLF & _ "CONDITION to less than 15 W or the energy dissipation to less than 900 J. " 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