rustdoc: Highlight function names

Closes #9460

src/librustdoc/html/render.rs

@@ -889,8 +889,8 @@ fn render_method(w: &mut io::Writer, meth: &clean::Item, withlink: bool) {
            g: &clean::Generics, selfty: &clean::SelfTy, d: &clean::FnDecl,
            withlink: bool) {
         write!(w, "{}fn {withlink, select,
-                            true{<a href='\\#fn.{name}'>{name}</a>}
-                            other{{name}}
+                            true{<a href='\\#fn.{name}' class='fnname'>{name}</a>}
+                            other{<span class='fnname'>{name}</span>}
                         }{generics}{decl}",
                match purity {
                    ast::unsafe_fn => "unsafe ",

src/librustdoc/html/static/main.css

@@ -221,6 +221,7 @@ a {
 .content a.enum, .block a.current.enum { color: #5e9766; }
 .content a.struct, .block a.current.struct { color: #e53700; }
 .content a.fn, .block a.current.fn { color: #8c6067; }
+.content .fnname { color: #8c6067; }
 
 .search-input {
     border: 2px solid #f2f2f2;