# File lib/mkmf.rb, line 940
def find_type(type, opt, *headers, &b)
opt ||= ""
fmt = "not found"
def fmt.%(x)
x ? x.respond_to?(:join) ? x.join(",") : x : self
end
checking_for checking_message(type, nil, opt), fmt do
headers.find do |h|
try_type(type, h, opt, &b)
end
end
end