^start of string
\[the literal [ (9110 / 1338 / 5B16)
examplethe literal text example (case sensitive) \.the literal . (4610 / 568 / 2E16)
comthe literal text com (case sensitive) \]the literal ] (9310 / 1358 / 5D16)
.*any character (except for line terminators), repeated any number of times
Group 1(\[(?:(?!example\.com).)*?\]) \[the literal [ (9110 / 1338 / 5B16)
Non-Capturing Group(?:(?!example\.com).)*? *?repeats the group contents below any number of times:
Negative Lookahead(?!example\.com) examplethe literal text example (case sensitive) \.the literal . (4610 / 568 / 2E16)
comthe literal text com (case sensitive) .any character (except for line terminators)
\]the literal ] (9310 / 1358 / 5D16)
g modifier: global. Finds all matches instead of stopping after the first