lib/sup/mbox.rb in sup-1.1 vs lib/sup/mbox.rb in sup-1.2

@@ -28,10 +28,10 @@
         uri = URI(Source.encode_path_for_uri @expanded_uri)
         @path = uri.path
       end
 
       raise ArgumentError, "not an mbox uri" unless uri.scheme == "mbox"
-      raise ArgumentError, "mbox URI ('#{uri}') cannot have a host: #{uri.host}" if uri.host
+      raise ArgumentError, "mbox URI ('#{uri}') cannot have a host: #{uri.host}" unless uri.host.nil? || uri.host.empty?
       raise ArgumentError, "mbox URI must have a path component" unless uri.path
       @f = nil
     else
       @f = uri_or_fp
       @path = uri_or_fp.path