# File lib/rake.rb, line 2092
2092:     def have_rakefile
2093:       @rakefiles.each do |fn|
2094:         if File.exist?(fn)
2095:           others = Dir.glob(fn, File::FNM_CASEFOLD)
2096:           return others.size == 1 ? others.first : fn
2097:         elsif fn == ''
2098:           return fn
2099:         end
2100:       end
2101:       return nil
2102:     end