Regular Expressions 101

Explanation

Pro

1st Alternative^(?!fruits).*$

^start of line

Negative Lookahead(?!fruits)

fruitsthe literal text fruits (case insensitive)

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

$end of line

2nd Alternative((?<count>\d{1,})\s(?<fruit>\w{1,}))

Group 1((?<count>\d{1,})\s(?<fruit>\w{1,}))

Group count(?<count>\d{1,})

\d{1,}a digit, repeated at least once

\sany whitespace character

Group fruit(?<fruit>\w{1,})

\w{1,}any word character, repeated at least once

Global pattern flags

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

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

^(?!fruits).*$|((?<count>\d{1,})\s(?<fruit>\w{1,}))

New

fruits 5 apples, 2 oranges, 3 bananas,
cars 3 toyota, 4 benz, 1 trabi
buses 3 toyota, 4 benz, 1 trabi
fruits 5 apples, 2 oranges, 3 bananas,