Regular Expressions 101

Non-Capturing Group(?:^.*?\[|\G)

1st Alternative^.*?\[

^start of line

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

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

2nd Alternative\G

\Gstart of current search

Character Class[ \w+]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\wany word character

+the literal + (43₁₀ / 53₈ / 2B₁₆)

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

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Character Class[ \w+]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\wany word character

+the literal + (43₁₀ / 53₈ / 2B₁₆)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Positive Lookahead(?=[ \w+]*(?:\[[ \w+]*\][ \w+]*)*\])

Character Class[ \w+]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\wany word character

+the literal + (43₁₀ / 53₈ / 2B₁₆)

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

*repeats the group contents below any number of times:

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Character Class[ \w+]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\wany word character

+the literal + (43₁₀ / 53₈ / 2B₁₆)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

Character Class[ \w+]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\wany word character

+the literal + (43₁₀ / 53₈ / 2B₁₆)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?:^.*?\[|\G)[ \w+]*\K\[[ \w+]*\](?=[ \w+]*(?:\[[ \w+]*\][ \w+]*)*\])

New

Say [hello] or [[hello] hello [world] ] [world] [word] now
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