Regular Expressions 101

Pro

1st Alternative(?<!\\)(?:\\{2})*(['"])(?:(?!(?:\1|\\)).|\\.)*+\1(*SKIP)(*FAIL)

Negative Lookbehind(?<!\\)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Non-Capturing Group(?:\\{2})*

*repeats the group contents below any number of times:

\\{2}the literal \ (92₁₀ / 134₈ / 5C₁₆) , repeated exactly 2 times

Group 1(['"])

Character Class['"]

'the literal ' (39₁₀ / 47₈ / 27₁₆)

"the literal " (34₁₀ / 42₈ / 22₁₆)

Non-Capturing Group(?:(?!(?:\1|\\)).|\\.)*+

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

1st Alternative(?!(?:\1|\\)).

Negative Lookahead(?!(?:\1|\\))

Non-Capturing Group(?:\1|\\)

1st Alternative\1

\1the text saved by group 1

2nd Alternative\\

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

.any character (except for line terminators)

2nd Alternative\\.

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

.any character (except for line terminators)

\1the text saved by group 1

(*SKIP)acts like (*PRUNE), but the next unanchored match attempt starts where (*SKIP) was reached instead of at the next subject character

(*FAIL)forces the current match attempt to fail at this position

2nd Alternative\h+

\h+any horizontal whitespace character, repeated at least once

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

Detailed match information will be displayed here automatically.

25 tokens

(?<!\\)(?:\\{2})*(['"])(?:(?!(?:\1|\\)).|\\.)*+\1(*SKIP)(*FAIL)|\h+

New

abc | xx ??   "1 x \' 3" d e f \' y " 5 \' x yz

abc | xx ??   '1 x \" 3' d e f \' y " 5 \' x yz

abc | xx ??   "1 x \' 3" d e f \' y " 5 \' x yz

abc | xx ??   '1 x \" 3' d e f \' y " 5 \' x yz