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Result: Matches Does not match starting at the black triangle slider

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Expected Matches (hover over highlights for details)	Actual Matches	Edit	Passing
Enter a string to be tested. If all highlighted matches and subgroups look correct, click "This is right". Suggest Cancel Delete
Enter a string to be tested. If all highlighted matches and subgroups look correct, click "This is right". Suggest Cancel

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{{flavors[reModel.flavor].external}} regex quick reference (hide):

[abx-z]	One character of: a, b, or the range x-z
[^abx-z]	One character except: a, b, or the range x-z
a\|b	a or b
a?	Zero or one a's (greedy)
a??	Zero or one a's (lazy)
a*	Zero or more a's (greedy)
a*?	Zero or more a's (lazy)
a+	One or more a's (greedy)
a+?	One or more a's (lazy)
a{4}	Exactly 4 a's
a{4,8}	Between (inclusive) 4 and 8 a's
a{9,}	9 or more a's
(?>...)	An atomic group
(?=...)	A positive lookahead
(?!...)	A negative lookahead
(?<=...)	A positive lookbehind
(?<!...)	A negative lookbehind
(?:...)	A non-capturing group
(...)	A capturing group
(?P<n>...)	A capturing group named n

^	Beginning of the string
$	End of the string
\d	A digit (same as [0-9])
\D	A non-digit (same as [^0-9])
\w	A word character (same as [_a-zA-Z0-9])
\W	A non-word character (same as [^_a-zA-Z0-9])
\s	A whitespace character
\S	A non-whitespace character
\b	A word boundary
\B	A non-word boundary
\n	A newline
\t	A tab
\cY	The control character with the hex code Y
\xYY	The character with the hex code YY
\uYYYY	The character with the hex code YYYY
.	Any character
\Y	The Y'th captured group
(?1)	Recurse into numbered group 1
(?&x)	Recurse into named group x
(?P=n)	The captured group named 'n'
(?#...)	A comment

Full {{flavors[reModel.flavor].external}} regex cheatsheet