Regular Expressions 101

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Group 1(\w{4},\w{4})

\w{4}a Unicode word character, repeated exactly 4 times

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\w{4}a Unicode word character, repeated exactly 4 times

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Non-Capturing Group(?:\w+|na)

1st Alternative\w+

\w+a Unicode word character, repeated at least once

2nd Alternativena

nathe literal text na (case sensitive)

the literal (32₁₀ / 40₈ / 20₁₆)

Non-Capturing Group(?:\[(.*?)\])?

?repeats the group contents below at most once:

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Group 2(.*?)

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

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

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

#the literal # (35₁₀ / 43₈ / 23₁₆)

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

the literal (32₁₀ / 40₈ / 20₁₆)

Group 3(\w+)

\w+a Unicode word character, repeated at least once

$end of string, or before its final line terminator

Global pattern flags

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

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25 tokens

Regular Expression

\((\w{4},\w{4})\) (?:\w+|na) (?:\[(.*?)\])?.*#.* (\w+)$

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