rpm generators only run when either a magic or path rule is set

[dcermak]

static int matches from rpmfc.c implies that rpm provides & requires generators only run when either __NAME_magic or __NAME_path is set:

rpm/build/rpmfc.c

Line 794 in 3ad9818

return (regMatch(mreg, mtype) || regMatch(rule->path, path));

Yet, the documentation https://rpm-software-management.github.io/rpm/manual/dependency_generators.html#file-attributes only mentions that "While technically all of them are optional, typically two or more of them are present to form a meaningul attribute". Which of these is correct, the source or the documentation?