Ensure auto_link does not ignore multiple trailing punctuations [#2504 state:resolved]

Signed-off-by: Pratik Naik <pratiknaik@gmail.com>

actionpack/lib/action_view/helpers/text_helper.rb

@@ -535,7 +535,7 @@ module ActionView
           link_attributes = html_options.stringify_keys
           text.gsub(AUTO_LINK_RE) do
             href = $&
-            punctuation = ''
+            punctuation = []
             left, right = $`, $'
             # detect already linked URLs and URLs in the middle of a tag
             if left =~ /<[^>]+$/ && right =~ /^[^>]*>/
@@ -543,17 +543,18 @@ module ActionView
               href
             else
               # don't include trailing punctuation character as part of the URL
-              if href.sub!(/[^\w\/-]$/, '') and punctuation = $& and opening = BRACKETS[punctuation]
-                if href.scan(opening).size > href.scan(punctuation).size
-                  href << punctuation
-                  punctuation = ''
+              while href.sub!(/[^\w\/-]$/, '')
+                punctuation.push $&
+                if opening = BRACKETS[punctuation.last] and href.scan(opening).size > href.scan(punctuation.last).size
+                  href << punctuation.pop
+                  break
                 end
               end
 
               link_text = block_given?? yield(href) : href
               href = 'http://' + href unless href.index('http') == 0
 
-              content_tag(:a, h(link_text), link_attributes.merge('href' => href)) + punctuation
+              content_tag(:a, h(link_text), link_attributes.merge('href' => href)) + punctuation.reverse.join('')
             end
           end
         end

actionpack/test/template/text_helper_test.rb

@@ -401,6 +401,13 @@ class TextHelperTest < ActionView::TestCase
       auto_link("Welcome to my new blog at http://www.myblog.com/. Please e-mail me at me@email.com.",
                 :link => :all, :html => { :class => "menu", :target => "_blank" })
   end
+  
+  def test_auto_link_with_multiple_trailing_punctuations
+    url = "http://youtube.com"
+    url_result = generate_result(url)
+    assert_equal url_result, auto_link(url)
+    assert_equal "(link: #{url_result}).", auto_link("(link: #{url}).")
+  end
 
   def test_cycle_class
     value = Cycle.new("one", 2, "3")