Regular Expressions 101

^start of line

Character Class[A-Z]{3}

{3}matches exactly 3 characters from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Group 1(;\s*[A-Z]{3})*

*repeats the group contents below any number of times:

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

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

Character Class[A-Z]{3}

{3}matches exactly 3 characters from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

$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.

Search reference

Regular Expression

^[A-Z]{3}(;\s*[A-Z]{3})*$

New

AAA;BBB
AAA; BBB
AAA

;AAA
AAA;BBB;
123;AAA