From: Marc-Andre Lafortune <ruby-core-mailing-list@...>
Date: 2010-07-01T05:18:25+09:00
Subject: [ruby-core:30980] Re: [Bug #3505] URI.join and Kernel::URI should 	accept URI objects

Hi!

On Tue, Jun 29, 2010 at 10:44 PM, Yui NARUSE <redmine@ruby-lang.org> wrote:
> I agree with this idea, but the patch has a problem; it breaks objects which have to_str.

Ah, indeed!

The following patch works better, then:


diff --git a/lib/uri/common.rb b/lib/uri/common.rb
index 58fd422..1ec4d0e 100644
--- a/lib/uri/common.rb
+++ b/lib/uri/common.rb
@@ -184,12 +184,15 @@ module URI
       end
     end

-    def join(*str)
-      u = self.parse(str[0])
-      str[1 .. -1].each do |x|
-       u = u.merge(x)
+    def join(*uris)
+      if uris[0].is_a?(URI::Generic)
+      elsif uri = String.try_convert(uri[0])
+        uris[0] = self.parse(uri)
+      else
+        raise ArgumentError,
+          "bad argument(expected URI object or URI string)"
       end
-      u
+      uris.inject :merge
     end

     def extract(str, schemes = nil, &block)
@@ -837,11 +840,19 @@ module URI
 end

 module Kernel
-  # alias for URI.parse.
+
   #
-  # This method is introduced at 1.8.2.
-  def URI(uri_str) # :doc:
-    URI.parse(uri_str)
+  # Returns +uri+ converted to a URI object.
+  #
+  def URI(uri)
+    if uri.is_a?(URI::Generic)
+      uri
+    elsif uri = String.try_convert(uri)
+      URI.parse(uri)
+    else
+      raise ArgumentError,
+        "bad argument (expected URI object or URI string)"
+    end
   end
   module_function :URI
 end