Regular Expressions 101

Pro

Group 1(\!\[.*?|(?<!^)\G)

1st Alternative\!\[.*?

\!the literal ! (33₁₀ / 41₈ / 21₁₆)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

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

2nd Alternative(?<!^)\G

Negative Lookbehind(?<!^)

^start of string

\Gstart of current search

Group 2((?>(?!\]\(http).)*?)

Atomic Group(?>(?!\]\(http).)*?

*?repeats the group contents below any number of times:

Negative Lookahead(?!\]\(http)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

httpthe literal text http (case insensitive)

.any character (except for line terminators)

{{the literal text {{

Group 3([^}]+?)

Negated Character Class[^}]+?

+?matches at least one character outside the set below:

}the literal } (125₁₀ / 175₈ / 7D₁₆)

}}the literal text }}

\[{2}the literal [ (91₁₀ / 133₈ / 5B₁₆) , repeated exactly 2 times

Negated Character Class[^]]+?

+?matches at least one character outside the set below:

]the literal ] (93₁₀ / 135₈ / 5D₁₆)

\]{2}the literal ] (93₁₀ / 135₈ / 5D₁₆) , repeated exactly 2 times

Positive Lookahead(?=.*?\]\(http[^)]*?\))

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

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

httpthe literal text http (case insensitive)

Negated Character Class[^)]*?

*?matches any number of characters outside the set below:

)the literal ) (41₁₀ / 51₈ / 29₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Global pattern flags

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

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25 tokens

(\!\[.*?|(?<!^)\G)((?>(?!\]\(http).)*?){{([^}]+?)}}\[{2}[^]]+?\]{2}(?=.*?\]\(http[^)]*?\))

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