^start of line
fieldthe literal text field (case sensitive) \s*any whitespace character, repeated any number of times
athe literal a (9710 / 1418 / 6116) (case sensitive)
\s*any whitespace character, repeated any number of times
\=the literal = (6110 / 758 / 3D16)
\s*any whitespace character, repeated any number of times
\'the literal ' (3910 / 478 / 2716)
\sany whitespace character
Group fielda(?<fielda>\w+) \w+any word character, repeated at least once
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