# File lib/rake/application.rb, line 180
180:     def have_rakefile
181:       @rakefiles.each do |fn|
182:         if File.exist?(fn)
183:           others = Dir.glob(fn, File::FNM_CASEFOLD)
184:           return others.size == 1 ? others.first : fn
185:         elsif fn == ''
186:           return fn
187:         end
188:       end
189:       return nil
190:     end