Regular Expressions 101

Pro

\Ra newline sequence

Negative Lookahead(?!\d+\t|\Z)

1st Alternative\d+\t

\d+a digit, repeated at least once

\ta tab character (ASCII 9)

2nd Alternative\Z

\Zend of string, or before its final line terminator

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

\R(?!\d+\t|\Z)

New

345	"cuad"	"dfr"
23	"test3"	"dfec2
"v1"
33 v2
v3"
32	"key3"	"fer"
12	"rte"	"ef"

345	"cuad"	"dfr"
23	"test3"	"dfec2
"v1"
33 v2
v3"
32	"key3"	"fer"
12	"rte"	"ef"