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
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  • Quantifiers
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  • 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

/
/
gmi

Test String

Substitution

Processing...

Code Generator

Generated Code

#include <MsgBoxConstants.au3> ; to declare the Constants of MsgBox Local $sRegex = "(?mi)(^## assemble\/assemble-boilerplate-markdown starts)([\s\S]*?)(^## assemble\/assemble-boilerplate-markdown ends)" Local $sString = "## assemble/assemble-boilerplate-markdown starts" & @CRLF & _ "" & @CRLF & _ "## assemble/assemble-boilerplate-markdown ends" & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ "## assemble/assemble-boilerplate-markdown starts " & @CRLF & _ "" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/TOC" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/auto-links" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/autolink-lines" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/backslash-escapes" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/blockquote-list-item" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/blockquotes-with-code-blocks" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/case-insensitive-refs" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/code-blocks" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/code-spans" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/def-blocks" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/double-link" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/escaped-angles" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/gfm-break" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/gfm-code-hr-list" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/gfm-code" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/gfm-del" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/gfm-em" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/gfm-links" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/gfm-tables" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/hard-wrapped-paragraphs-with-list-like-lines" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/horizontal-rules" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/hr-list-break" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/inline-html-advanced" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/inline-html-comments" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/inline-html-simple" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/lazy-blockquotes" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/links-inline-style" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/links-reference-style" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/links-shortcut-references" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/list-item-text" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/literal-quotes-in-titles" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/loose-lists" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/main" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/markdown-documentation-basics" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/markdown-documentation-syntax" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/nested-blockquotes" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/nested-code" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/nested-em" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/nested-square-link" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/not-a-link" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/ordered-and-unordered-lists" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/same-bullet" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/markdown/strong-and-em-together" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/data-context" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/data-types" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/data-yaml-front-matter" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/data-yaml" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/data" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/options-assets" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/options-collections" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/options-data" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/options-engine" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/options-ext" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/options-helpers" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/options-layout" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/options-layoutdir" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/options-partials" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/options" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/templates-helpers" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/templates-layouts" & @CRLF & _ "/assemble-boilerplate-markdown/src/content/wiki/templates-partials" & @CRLF & _ "" & @CRLF & _ "## assemble/assemble-boilerplate-markdown ends" Local $sSubst = "xxx" 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