Regular Expressions 101

Atomic Group(?>([^(]*?)\s*([(]([^()]*|(?R))*[)])([^)]*?)\s*)

Group 1([^(]*?)

Negated Character Class[^(]*?

*?matches any number of characters outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

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

Group 2([(]([^()]*|(?R))*[)])

Character Class[(]

(the literal ( (40₁₀ / 50₈ / 28₁₆)

Group 3([^()]*|(?R))*

*repeats the group contents below any number of times:

1st Alternative[^()]*

Negated Character Class[^()]*

*matches any number of characters outside the set below:

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

2nd Alternative(?R)

(?R)recurses into the entire pattern

Character Class[)]

)the literal ) (41₁₀ / 51₈ / 29₁₆)

Group 4([^)]*?)

Negated Character Class[^)]*?

*?matches any number of characters outside the set below:

)the literal ) (41₁₀ / 51₈ / 29₁₆)

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

Global pattern flags

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

s modifier: single line. Allows a dot to match line terminators

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?>([^(]*?)\s*([(]([^()]*|(?R))*[)])([^)]*?)\s*)

New

SU 3180 and 
(CMG 3200 or SU 3210 or 
  (CMG 3200 or 
     (CMG 3200 or SU 3210 and 
        (CMG 3200 or SU 3210)
     )
  )
)