makes protocols regex case insensitive

Author: xuanxu

lib/rails_autolink/helpers.rb

@@ -73,7 +73,7 @@ def auto_link(text, *args, &block) #link = :all, html = {}, &block)
           AUTO_LINK_RE = %r{
               (?: ((?:ed2k|ftp|http|https|irc|mailto|news|gopher|nntp|telnet|webcal|xmpp|callto|feed|svn|urn|aim|rsync|tag|ssh|sftp|rtsp|afs|file):)// | www\. )
               [^\s<\u00A0]+
-            }x
+            }ix
 
           # regexps for determining context, used high-volume
           AUTO_LINK_CRE = [/<[^>]+$/, /^[^>]*>/, /<a\b.*?>/i, /<\/a>/i]

test/test_rails_autolink.rb

@@ -138,7 +138,6 @@ def test_auto_link_already_linked
     assert_equal linked_email, auto_link(linked_email)
   end
 
-
   def test_auto_link_at_eol
     url1 = "http://api.rubyonrails.com/Foo.html"
     url2 = "http://www.ruby-doc.org/core/Bar.html"
@@ -278,6 +277,9 @@ def test_auto_link
     link12_raw    = 'http://tools.ietf.org/html/rfc3986'
     link12_result = generate_result(link12_raw)
     assert_equal %(<p>#{link12_result} text-after-nonbreaking-space</p>), auto_link("<p>#{link12_raw} text-after-nonbreaking-space</p>")
+
+    link13_raw    = 'HTtP://www.rubyonrails.com'
+    assert_equal generate_result(link13_raw), auto_link(link13_raw)
   end
 
   def test_auto_link_parsing