Regular Expressions 101

^start of line

Non-Capturing Group(?:\[?([\w$#]+)]?\.)?

?repeats the group contents below at most once:

\[?optionally matches the literal [ (91₁₀ / 133₈ / 5B₁₆)

Group 1([\w$#]+)

Character Class[\w$#]+

+matches at least one character from the set below:

\wa Unicode word character

$the literal $ (36₁₀ / 44₈ / 24₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

]?optionally matches the literal ] (93₁₀ / 135₈ / 5D₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\[?optionally matches the literal [ (91₁₀ / 133₈ / 5B₁₆)

Group 2([\w$#]+)

Character Class[\w$#]+

+matches at least one character from the set below:

\wa Unicode word character

$the literal $ (36₁₀ / 44₈ / 24₁₆)

#the literal # (35₁₀ / 43₈ / 23₁₆)

]?optionally matches the literal ] (93₁₀ / 135₈ / 5D₁₆)

$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

Ready to run

25 tokens

Regular Expression

^(?:\[?([\w$#]+)]?\.)?\[?([\w$#]+)]?$