Regular Expressions 101

Positive Lookbehind(?<=[a-zA-Z])

Character Class[a-zA-Z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

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

\s+any whitespace character, repeated at least once

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

+repeats the group contents below at least once:

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

\s+any whitespace character, repeated at least once

Positive Lookahead(?=[a-zA-Z])

Character Class[a-zA-Z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

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

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-zA-Z])\s+(?:;\s+)+(?=[a-zA-Z])

New

MM ZZ ; ; ; ; NN GGG ; ;  SSS. ;

ZZ ; ; ; ; NN. ;

MM ZZ ; ; ; ; NN GGG ; ;  SSS. ;