next if ! -> Move to the next line if the line does NOT
/
^\s*?  -> begin with one or more space (? makes this lazy I guess)
([^=]+)-> Does not include the literal "equal to" sign & create capture group of whatever text is there.
\s* -> Some more space.
= -> Literal "equal to"
\s* -> Some more space.
(.*) -> Second capture group of the remaining stuff.
/