regex101: Quote Macthing with escape

Group 1(["'])

Character Class["']

"the literal " (34₁₀ / 42₈ / 22₁₆)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Group 2((?:(?=(?:\\)*)\\.|.)*?)

Non-Capturing Group(?:(?=(?:\\)*)\\.|.)*?

*?repeats the group contents below any number of times:

1st Alternative(?=(?:\\)*)\\.

Positive Lookahead(?=(?:\\)*)

Non-Capturing Group(?:\\)*

*repeats the group contents below any number of times:

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

.any character (except for line terminators)

2nd Alternative.

.any character (except for line terminators)

\1the text saved by group 1

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Search reference

Regular Expression

(["'])((?:(?=(?:\\)*)\\.|.)*?)\1

Test String
New

" RegExp to match quotes "
' Supports escapin\' '
" This is selected \\" this is not
' Works with JS RegExp '
"You can also get the quote type used"

"How it works"
"------------"

' (["\']) Matches a " or a \' and stores it in \1'
' ( starts \2'
' (?: starts a non-capturing group'
' (?=(?:\\)*) Will check if there is an odd amount of \ '
' \\. will escape / ignore it '
' |.  will never mind it if there\'s an even amount  '
' )*? will close the non-capturing group and repeat it'
' \1  will make it close with the quote selected in \1'

"Flags:"
"------"

" g: global, selects multiple times "

Regular Expressions 101

Regular Expression

Test String
New

Extraction
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Regular Expression

Test StringNew

ExtractionProcessing...

Test String
New

Extraction
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