\Gstart of current search
\[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)
\h+any horizontal whitespace character, repeated at least once
?repeats the group contents below at most once:
Negated Character Class[^][]+ +matches at least one character outside the set below:
]the literal ] (9310 / 1358 / 5D16)
[the literal [ (9110 / 1338 / 5B16)
$end of line
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