\ban ASCII word boundary
mickythe literal text micky (case sensitive) \.the literal . (4610 / 568 / 2E16)
mcgurk@the literal text mcgurk@ (case sensitive) Negated Character Class[^|\s]+ +matches at least one character outside the set below:
|the literal | (12410 / 1748 / 7C16)
\sany whitespace character
\|the literal | (12410 / 1748 / 7C16)
\Kresets the starting point of the reported match. Any previously consumed characters are no longer included in the final match
.*any character (except for line terminators), repeated any number of times
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