Regular Expressions 101

Pro

1st Alternative(\d+)(?=(,|:).*?~.*?~.*?\1_(.))

Group 1(\d+)

\d+a digit, repeated at least once

Positive Lookahead(?=(,|:).*?~.*?~.*?\1_(.))

Group 2(,|:)

1st Alternative,

,the literal , (44₁₀ / 54₈ / 2C₁₆)

2nd Alternative:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

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

~the literal ~ (126₁₀ / 176₈ / 7E₁₆)

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

~the literal ~ (126₁₀ / 176₈ / 7E₁₆)

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

\1the text saved by group 1

_the literal _ (95₁₀ / 137₈ / 5F₁₆)

Group 3(.)

.any character (except for line terminators)

2nd Alternative#

#the literal # (35₁₀ / 43₈ / 23₁₆)

3rd Alternative,

,the literal , (44₁₀ / 54₈ / 2C₁₆)

4th Alternative:.*

:the literal : (58₁₀ / 72₈ / 3A₁₆)

.*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

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

(\d+)(?=(,|:).*?~.*?~.*?\1_(.))|#|,|:.*

New

#1,0110,0010:~;0101_1000;0110_1001;0111_1010;1000_1011;1001_1100;1010_1101;1011_1110;1100_1111,~0000_00001_10010_20011_30100_40101_50110_60111_71000_81001_9

Substitution

$3

#1,0110,0010:~;0101_1000;0110_1001;0111_1010;1000_1011;1001_1100;1010_1101;1011_1110;1100_1111,~0000_00001_10010_20011_30100_40101_50110_60111_71000_81001_9