Regular Expressions 101

Negative Lookbehind(?<!\()

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Negative Lookbehind(?<!eq )

eq the literal text eq (case sensitive)

'the literal ' (39₁₀ / 47₈ / 27₁₆)

Negative Lookahead(?!\)|\Z)

1st Alternative\)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

2nd Alternative\Z

\Zend of string, or before its final line terminator

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.

Search reference

Regular Expression

(?<!\()(?<!eq )'(?!\)|\Z)

New

('hel'lo') eq 'some 'variable he're

''