Regular Expressions 101

^start of line

Group 1(.*)

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

Positive Lookahead(?=@gmail)

@gmailthe literal text @gmail (case sensitive)

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

^(.*)(?=@gmail)

New

test@gmail.com
hello@yahoo.com
mp34@gmail.com
test1@hotmail.com
my64@gmail.com

test@gmail.com
hello@yahoo.com
mp34@gmail.com
test1@hotmail.com
my64@gmail.com