Regular Expressions 101

Explanation

Pro

^start of line

Group 1(<<(?>[^<>\n]+|(?1))>>)

<<the literal text <<

Atomic Group(?>[^<>\n]+|(?1))

1st Alternative[^<>\n]+

Negated Character Class[^<>\n]+

+matches at least one character outside the set below:

<the literal < (60₁₀ / 74₈ / 3C₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

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

2nd Alternative(?1)

(?1)calls group 1 as a subroutine

>>the literal text >>

$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.

25 tokens

^(<<(?>[^<>\n]+|(?1))>>)$

<<totAmt>>
<<accNum>>
<<agentName>>
<<payLink>>

<<cName>
<<agentName>>>>>>>>
<cName>
<<<<<payLink>>
<<cName<<>>

<<totAmt>>
<<accNum>>
<<agentName>>
<<payLink>>

<<cName>
<<agentName>>>>>>>>
<cName>
<<<<<payLink>>
<<cName<<>>