Alternate Links does not works properly

[diegodurante]

Hi everybody,
If we try to create links using alternate links feature as reported into official documentation, the xml file generated is broken.

Tryed to create a sitemap.rb with just the code reported into official documentation:
config/sitemap.rb

SitemapGenerator::Sitemap.default_host = "http://www.example.com"
  SitemapGenerator::Sitemap.create do
    add('/index.html', :alternate => {
      :href => 'http://www.example.de/index.html',
      :lang => 'de',
      :nofollow => true
    })
end

Run the command: rake sitemap:refresh and got a sitemap.xml file with this output:

That of course is not an XML format.

Instead having a simple sitemap.rb file like this:

SitemapGenerator::Sitemap.default_host = "http://www.example.com"
  SitemapGenerator::Sitemap.create do
    add '/index.html',  priority: 1,   changefreq: 'daily'
end

Will produce a correct XML file like this:

Tested with these versions:

• Ruby 2.1.3
• Rails 4.2.3
• sitemap_generator: 5.0.5

What is going on?
Thanks,
Diego.

[kjvarga]

I've run the same test with the same versions and it works as it should.

Are you viewing the xml file in a browser? Only the contents of the XML elements will be shown, and not the element tags themselves.