Regular Expressions 101

Pro

Negative Lookbehind(?<!^.*;(?=").*|^)

1st Alternative^.*;(?=").*

^start of line

.*any character (except for line terminators), repeated any number of times

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

Positive Lookahead(?=")

"the literal " (34₁₀ / 42₈ / 22₁₆)

.*any character (except for line terminators), repeated any number of times

2nd Alternative^

^start of line

"the literal " (34₁₀ / 42₈ / 22₁₆)

Negative Lookahead(?!;|.*;")

1st Alternative;

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

2nd Alternative.*;"

.*any character (except for line terminators), repeated any number of times

;"the literal text ;"

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

26 tokens

(?<!^.*;(?=").*|^)"(?!;|.*;")

New

"Best Before - NO MATCH

Best Before"; - NO MATCH

;"Best "Before - NO MATCH

Best "Before - MATCH

"Best Before - NO MATCH

Best Before"; - NO MATCH

;"Best "Before - NO MATCH

Best "Before - MATCH