Regular Expressions 101

^start of line

gallery-athe literal text gallery-a (case sensitive)

Negative Lookahead(?!.*clip-a)

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

clip-athe literal text clip-a (case sensitive)

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

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

Regular Expression

^gallery-a(?!.*clip-a).*

New

gallery-a
gallery-a kfjrgrgl elrgkelk
gallery-a clip-a