clicking on a link with blank href should go to the current url

lib/capybara/rack_test/browser.rb

@@ -45,10 +45,13 @@ class Capybara::RackTest::Browser
   def process(method, path, attributes = {}, env = {})
     new_uri = URI.parse(path)
     method.downcase! unless method.is_a? Symbol
-
-    new_uri.path = request_path if path.start_with?("?")
-    new_uri.path = "/" if new_uri.path.empty?
-    new_uri.path = request_path.sub(%r(/[^/]*$), '/') + new_uri.path unless new_uri.path.start_with?('/')
+    if path.empty?
+      new_uri.path = request_path
+    else
+      new_uri.path = request_path if path.start_with?("?")
+      new_uri.path = "/" if new_uri.path.empty?
+      new_uri.path = request_path.sub(%r(/[^/]*$), '/') + new_uri.path unless new_uri.path.start_with?('/')
+    end
     new_uri.scheme ||= @current_scheme
     new_uri.host ||= @current_host
     new_uri.port ||= @current_port unless new_uri.default_port == @current_port

lib/capybara/spec/session/node_spec.rb

@@ -314,6 +314,12 @@ Capybara::SpecHelper.spec "node" do
       expect(@session.current_url).to match(%r{/with_html$})
     end
 
+    it "should go to the same page if href is blank" do
+      @session.find(:css, '#link_blank_href').click
+      sleep 1
+      expect(@session).to have_current_path('/with_html')
+    end
+
     it "should be able to check a checkbox" do
       @session.visit('form')
       cbox = @session.find(:checkbox, 'form_terms_of_use')

lib/capybara/spec/views/with_html.erb

@@ -119,4 +119,5 @@ banana</textarea>
 
 <div>
   <a id="link_placeholder">No href</a>
+  <a id="link_blank_href" href="">Blank href</a>
 </div>