regex101: PCRE (Legacy) Match Workspace

1st Alternative((?<=x)]|\[(?=x]))

Group 1((?<=x)]|\[(?=x]))

1st Alternative(?<=x)]

Positive Lookbehind(?<=x)

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

2nd Alternative\[(?=x])

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Positive Lookahead(?=x])

x]the literal text x] (case sensitive)

2nd Alternative((?<=\[)x(?=]))

Group 2((?<=\[)x(?=]))

Positive Lookbehind(?<=\[)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

Positive Lookahead(?=])

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

3rd Alternative((?<=\[x]\s)!(?=\s))

Group 3((?<=\[x]\s)!(?=\s))

Positive Lookbehind(?<=\[x]\s)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

x]the literal text x] (case sensitive)

\sany whitespace character

!the literal ! (33₁₀ / 41₈ / 21₁₆)

Positive Lookahead(?=\s)

\sany whitespace character

4th Alternative(?<=\[x]\s)(\?)(?=\s)

Positive Lookbehind(?<=\[x]\s)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

x]the literal text x] (case sensitive)

\sany whitespace character

Group 4(\?)

\?the literal ? (63₁₀ / 77₈ / 3F₁₆)

Positive Lookahead(?=\s)

\sany whitespace character

5th Alternative(?:\G(?!\A)\||(?<=\[x]\s[?!\s]\s\|))\K([^|\n]*)(?=\|)

Non-Capturing Group(?:\G(?!\A)\||(?<=\[x]\s[?!\s]\s\|))

1st Alternative\G(?!\A)\|

\Gstart of current search

Negative Lookahead(?!\A)

\Astart of string

\|the literal | (124₁₀ / 174₈ / 7C₁₆)

2nd Alternative(?<=\[x]\s[?!\s]\s\|)

Positive Lookbehind(?<=\[x]\s[?!\s]\s\|)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

x]the literal text x] (case sensitive)

\sany whitespace character

Character Class[?!\s]

?the literal ? (63₁₀ / 77₈ / 3F₁₆)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

\sany whitespace character

\|the literal | (124₁₀ / 174₈ / 7C₁₆)

\Kresets the starting point of the reported match. Any previously consumed characters are no longer included in the final match

Group 5([^|\n]*)

Positive Lookahead(?=\|)

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

Search reference

Regular Expression

((?<=x)]|\[(?=x]))|((?<=\[)x(?=]))|((?<=\[x]\s)!(?=\s))|(?<=\[x]\s)(\?)(?=\s)|(?:\G(?!\A)\||(?<=\[x]\s[?!\s]\s\|))\K([^|\n]*)(?=\|)

Unit Tests

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