I have updated jade to latest version, and started seeing this message in console
You should not have jade tags with multiple attributes
0.33.0 / 2013-07-12
Hugely more powerful error reporting (especially with compileDebug set explicitly to true)
Add a warning for tags with multiple attributes
mixin link(href, name)
a(class=attributes.class, href=href)= name
a(href=href, attributes)= name
Multiple "attributes" doesn't mean what you probably think it means. It's not an HTML attribute as we know it, but a token of type "attribute".
Note how I have two attribute sections, each with one attribute.
Better put them in one attribute section: