take the OR'ed keywords into the \@keywords

for example, this is my search:

\@keywords apple | orange | banana

would fa search posts that have any of the list(apple, orange, banana) in the keywords?


also, with quoted words between or next to the OR pipe

\@keywords apple | orange | "banana split" | "yellow bell pepper"

i read that fa would find posts that have "banana" and "split" together when you search "banana split" in quotes. but with the OR pipe symbol |, does fa search only thru the keywords or search for "apple" in the keywords, and the rest (orange, "banana split", "yellow bell pepper") is searched in all fields (title, keywords, description, etc.)?