Regular Expressions 101

Pro

^start of line

Group 1(.+)

.+any character (except for line terminators), repeated at least once

Group 2(\n.+\n.+)

\na line-feed (newline) character (ASCII 10)

.+any character (except for line terminators), repeated at least once

\na line-feed (newline) character (ASCII 10)

.+any character (except for line terminators), repeated at least once

Group 3([\s\S]*?)

Character Class[\s\S]*?

*?matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

Group 4(.+)

.+any character (except for line terminators), repeated at least once

\2the text saved by group 2

$end of line

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.

26 tokens

Regular Expression

^(.+)(\n.+\n.+)([\s\S]*?)(.+)\2$

New

Cucumber Overwatch
Facebook Inc
New York, Ny.

John Stave
Amazon Inc
Michigan, Mi.

EAAlon MasBBk
Facebook Inc
New York, Ny.

Elon Mask
Amazon Inc
Michigan, Mi.

Substitution

$1, $4$2$3

Cucumber Overwatch
Facebook Inc
New York, Ny.

John Stave
Amazon Inc
Michigan, Mi.

EAAlon MasBBk
Facebook Inc
New York, Ny.

Elon Mask
Amazon Inc
Michigan, Mi.