Regular Expressions 101

Group 1([\s\S].*?)

Character Class[\s\S]

\sany whitespace character

\Sany non-whitespace character

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

\ban ASCII word boundary

Group 2((?:\s*\d+\s+;?|\s*\d+;)PAGE\s+\d+|\s*PAGE.*[0-9])

1st Alternative(?:\s*\d+\s+;?|\s*\d+;)PAGE\s+\d+

Non-Capturing Group(?:\s*\d+\s+;?|\s*\d+;)

1st Alternative\s*\d+\s+;?

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

\d+a digit, repeated at least once

\s+any whitespace character, repeated at least once

;?optionally matches the literal ; (59₁₀ / 73₈ / 3B₁₆)

2nd Alternative\s*\d+;

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

\d+a digit, repeated at least once

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

PAGEthe literal text PAGE (case sensitive)

\s+any whitespace character, repeated at least once

\d+a digit, repeated at least once

2nd Alternative\s*PAGE.*[0-9]

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

PAGEthe literal text PAGE (case sensitive)

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

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

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.

Search reference

Regular Expression

([\s\S].*?)\b((?:\s*\d+\s+;?|\s*\d+;)PAGE\s+\d+|\s*PAGE.*[0-9])

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