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

~
~
gms

Test String

Substitution

Processing...

Code Generator

Generated Code

#include <MsgBoxConstants.au3> ; to declare the Constants of MsgBox Local $sRegex = "(?ms)<li>.*?<a href="([^"]+)".*?alt="On Contact: ([^"]+)".*?<p[^>]*>((?:(?!</p>).)+?)</p>.*?<p[^>]*>([^<]+)<" Local $sString = " <li><p style="margin-bottom: 0in"><a href="https://www.rt.com/shows/on-contact/550756-america-long-war-race/">On" & @CRLF & _ " Contact: Race and America's long war </a>" & @CRLF & _ " </p>" & @CRLF & _ " <p style="margin-bottom: 0in"><a href="https://www.rt.com/shows/on-contact/550756-america-long-war-race/">" & @CRLF & _ " <font color="#000080">" & @CRLF & _ " <img src="rt.com-on_contact-220405-no_blurb_html_1dff87941f1c724a.jpg" name="Image1" alt="On Contact: Race and America's long war" align="bottom" width="280" height="157" border="1"/>" & @CRLF & _ " </font>" & @CRLF & _ "</a>" & @CRLF & _ "</p>" & @CRLF & _ " <p style="margin-bottom: 0in">On the show, Chris Hedges discusses" & @CRLF & _ " America's inner and outer wars and its nexus with capitalism and" & @CRLF & _ " empire with Professor of Social and Cultural Analysis and History at" & @CRLF & _ " New York University Nikhil Pal Singh. The internal violence in the" & @CRLF & _ " United... " & @CRLF & _ " </p>" & @CRLF & _ " <p style="margin-bottom: 0in">Feb 27, 2022 10:36</p>" & @CRLF & _ " <li><p style="margin-bottom: 0in"><a href="https://www.rt.com/shows/on-contact/550319-george-washington-genocidal-colonist/">" & @CRLF & _ " <font color="#000080">" & @CRLF & _ " <img src="rt.com-on_contact-220405-no_blurb_html_198feb67032166ff.png" name="Image3" alt="On Contact: George Washington and the legacy of white supremacy" align="bottom" width="280" height="157" border="1"/>" & @CRLF & _ " </font>" & @CRLF & _ "</a>" & @CRLF & _ "</p>" & @CRLF & _ " <p style="margin-bottom: 0in"><strong><a href="https://www.rt.com/shows/on-contact/550319-george-washington-genocidal-colonist/">On" & @CRLF & _ " Contact: George Washington and the legacy of white supremacy </a></strong>" & @CRLF & _ " </p>" & @CRLF & _ " <p style="margin-bottom: 0in">On the show, Chris Hedges discusses" & @CRLF & _ " George Washington, the fallible human being and one of the principal" & @CRLF & _ " architects of the United States, with author Nathaniel Philbrick. As" & @CRLF & _ " America fractures into ideologically hostile camps, it colors how" & @CRLF & _ " we... " & @CRLF & _ " </p>" & @CRLF & _ " <p style="margin-bottom: 0in">Feb 25, 2022 09:09 " & @CRLF & _ " </p>" & @CRLF & _ " <li>[...]" Local $sSubst = "" Local $sResult = StringRegExpReplace($sString, $sRegex, $sSubst) MsgBox($MB_SYSTEMMODAL, "Result", $sResult)

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