(?m)applies the following effective flags to the remainder of the pattern: gm m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string
^start of line
\s*a Unicode whitespace character, repeated any number of times
\[the literal [ (9110 / 1338 / 5B16)
Negated Character Class[^][]* *matches any number of characters outside the set below:
]the literal ] (9310 / 1358 / 5D16)
[the literal [ (9110 / 1338 / 5B16)
]the literal ] (9310 / 1358 / 5D16)
\(the literal ( (4010 / 508 / 2816)
httpthe literal text http (case sensitive) s?optionally matches the literal s (11510 / 1638 / 7316) (case sensitive)
Negated Character Class[^\s()]* *matches any number of characters outside the set below:
\sa Unicode whitespace character
(the literal ( (4010 / 508 / 2816)
)the literal ) (4110 / 518 / 2916)
\)the literal ) (4110 / 518 / 2916)
\s*a Unicode whitespace character, repeated any number of times
g modifier: global. Finds all matches instead of stopping after the first