Format characters in field "Description" are causing problems

[oliver006]

If I use a string in Item.Description that contains format strings like %s the output is broken, looks like something is trying to sprintf the description string

    &Item{
        Title:       "Limiting Concurrency in Go",
        Link:        &Link{Href: "http://jmoiron.net/blog/limiting-concurrency-in-go/"},

 -->    Description: "abcdee %s deeefffff",

        Author:      &Author{"Jason Moiron", "jmoiron@jmoiron.net"},
        Created:     now,
    },

in the RSS feed content is abcdee %!s(MISSING) deeefffff.
Real-world example for this would be urlencoded links.
Any suggestions as to what I can do to prevent the formatting to happen?

[kisielk]

I added a test for this case in the above-mentioned commit and couldn't reproduce. If you are still able to reproduce the problem, please provide a test case.