Escapes double quotes in img tag

plugins/image_tag.rb

@@ -26,11 +26,11 @@ module Jekyll
 
       if markup =~ /(?<class>\S.*\s+)?(?<src>(?:https?:\/\/|\/|\S+\/)\S+)(?:\s+(?<width>\d+))?(?:\s+(?<height>\d+))?(?<title>\s+.+)?/i
         @img = attributes.reduce({}) { |img, attr| img[attr] = $~[attr].strip if $~[attr]; img }
-        if @img['title'] =~ /(?:"|')([^"']+)?(?:"|')\s+(?:"|')([^"']+)?(?:"|')/
-          @img['title']  = $1
-          @img['alt']    = $2
+        if /(?:"|')(?<title>[^"']+)?(?:"|')\s+(?:"|')(?<alt>[^"']+)?(?:"|')/ =~ @img['title']
+          @img['title']  = title
+          @img['alt']    = alt
         else
-          @img['alt']    = @img['title'].gsub!(/"/, '')
+          @img['alt']    = @img['title'].gsub!(/"/, '&#34;')
         end
         @img['class'].gsub!(/"/, '')
       end