^start of line
Group Date(?P<Date>[^\|]+) Negated Character Class[^\|]+ +matches at least one character outside the set below:
\|the literal | (12410 / 1748 / 7C16)
\|the literal | (12410 / 1748 / 7C16)
\[the literal [ (9110 / 1338 / 5B16)
.*any character (except for line terminators), repeated any number of times
\]the literal ] (9310 / 1358 / 5D16)
\|the literal | (12410 / 1748 / 7C16)
\w+any word character, repeated at least once
\|the literal | (12410 / 1748 / 7C16)
Negated Character Class[^|]+ +matches at least one character outside the set below:
|the literal | (12410 / 1748 / 7C16)
\|the literal | (12410 / 1748 / 7C16)
.*any character (except for line terminators), repeated any number of times
\-the literal - (4510 / 558 / 2D16)
\w+any word character, repeated at least once
\|the literal | (12410 / 1748 / 7C16)
Group 3((null%40null\|)|) 1st Alternative(null%40null\|) null%40nullthe literal text null%40null (case sensitive) \|the literal | (12410 / 1748 / 7C16)
2nd Alternative — matches an empty string
Group USERID(?P<USERID>[^\|]+) Negated Character Class[^\|]+ +matches at least one character outside the set below:
\|the literal | (12410 / 1748 / 7C16)
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