Regular Expressions 101

^start of string

Non-Capturing Group(?:(?!-{3,}(?:BEGIN|END) NEW CERTIFICATE REQUEST)[\s\S])*

*repeats the group contents below any number of times:

Negative Lookahead(?!-{3,}(?:BEGIN|END) NEW CERTIFICATE REQUEST)

-{3,}the literal - (45₁₀ / 55₈ / 2D₁₆) , repeated at least 3 times

Non-Capturing Group(?:BEGIN|END)

1st AlternativeBEGIN

BEGINthe literal text BEGIN (case sensitive)

2nd AlternativeEND

ENDthe literal text END (case sensitive)

NEW CERTIFICATE REQUESTthe literal text NEW CERTIFICATE REQUEST (case sensitive)

Character Class[\s\S]

\sany whitespace character

\Sany non-whitespace character

Group 1(-{3,}BEGIN NEW CERTIFICATE REQUEST(?:(?!-{3,}BEGIN NEW CERTIFICATE REQUEST)[\s\S])*?-{3,}END NEW CERTIFICATE REQUEST-{3,})

-{3,}the literal - (45₁₀ / 55₈ / 2D₁₆) , repeated at least 3 times

BEGIN NEW CERTIFICATE REQUESTthe literal text BEGIN NEW CERTIFICATE REQUEST (case sensitive)

Non-Capturing Group(?:(?!-{3,}BEGIN NEW CERTIFICATE REQUEST)[\s\S])*?

*?repeats the group contents below any number of times:

Negative Lookahead(?!-{3,}BEGIN NEW CERTIFICATE REQUEST)

-{3,}the literal - (45₁₀ / 55₈ / 2D₁₆) , repeated at least 3 times

BEGIN NEW CERTIFICATE REQUESTthe literal text BEGIN NEW CERTIFICATE REQUEST (case sensitive)

Character Class[\s\S]

\sany whitespace character

\Sany non-whitespace character

-{3,}the literal - (45₁₀ / 55₈ / 2D₁₆) , repeated at least 3 times

END NEW CERTIFICATE REQUESTthe literal text END NEW CERTIFICATE REQUEST (case sensitive)

-{3,}the literal - (45₁₀ / 55₈ / 2D₁₆) , repeated at least 3 times

\s*any whitespace character, repeated any number of times

$end of string

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

26 tokens

Regular Expression

^(?:(?!-{3,}(?:BEGIN|END) NEW CERTIFICATE REQUEST)[\s\S])*(-{3,}BEGIN NEW CERTIFICATE REQUEST(?:(?!-{3,}BEGIN NEW CERTIFICATE REQUEST)[\s\S])*?-{3,}END NEW CERTIFICATE REQUEST-{3,})\s*$

New

-----BEGIN NEW CERTIFICATE REQUEST----- 

and

-----END NEW CERTIFICATE REQUEST-----

Regular Expression

Substitution