Null pointer exception with `:class` attribute containing vector nil

[kwrooijen]

The following fails with a null pointer exception

(hiccup/html [:div.foo {:class [nil]}])

I'll check this out (hopefully) tomorrow

[weavejester]

(map name classes) probably needs to be changed to (map to-str classes).

[kwrooijen]

to-str causes the nils to become empty string. Then when we join them we get extra spaces. Not sure if this is desirable? Maybe it's better to filter the nils instead. If the extra spaces (which technically don't matter) are fine the we can make this simple change

[weavejester]

Joining to get multiple spaces is fine. The output from Hiccup is not prettified.