Regular Expressions 101

^start of line

Positive Lookahead(?=.*\bfoo\b)

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

\ban ASCII word boundary

foothe literal text foo (case sensitive)

\ban ASCII word boundary

Positive Lookahead(?=.*\bbar\b)

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

\ban ASCII word boundary

barthe literal text bar (case sensitive)

\ban ASCII word boundary

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

^(?=.*\bfoo\b)(?=.*\bbar\b)

foo
bar
foo ba
foo bar
smthing entirely else foo more other stuff, bar
in other sequence too: bar foo