Regular Expressions 101

^start of line

Group 1(\[\^)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

\^the literal ^ (94₁₀ / 136₈ / 5E₁₆)

Group 2([^\]\s\p{C}]+)

Negated Character Class[^\]\s\p{C}]+

+matches at least one character outside the set below:

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

\sany whitespace character

\p{C}a control, format, surrogate, private-use, or unassigned code point

Group 3(\])

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

\ the literal (32₁₀ / 40₈ / 20₁₆)

Group 4(\P{C}*(?:\n(?!\n[\[\n])\P{C}*)*)

\P{C}*characters not matched by \p{C}, repeated any number of times

Non-Capturing Group(?:\n(?!\n[\[\n])\P{C}*)*

*repeats the group contents below any number of times:

\na line-feed (newline) character (ASCII 10)

Negative Lookahead(?!\n[\[\n])

\na line-feed (newline) character (ASCII 10)

Character Class[\[\n]

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

\na line-feed (newline) character (ASCII 10)

\P{C}*characters not matched by \p{C}, repeated any number of times

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

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25 tokens

Regular Expression

^(\[\^)([^\]\s\p{C}]+)(\])\ (\P{C}*(?:\n(?!\n[\[\n])\P{C}*)*)

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