Pretty print function definitions

src/pretty/expr.rs

@@ -31,7 +31,7 @@ impl<'a, D: DocAllocator<'a>> Pretty<'a, D> for Expr {
             Self::Var(var) => var.pretty(allocator),
             Self::TableConstr(constr) => constr.pretty(allocator),
             Self::TableDestr(destr) => destr.pretty(allocator),
-            Self::FuncDef(def) => allocator.text("<def>"),
+            Self::FuncDef(def) => def.pretty(allocator),
             Self::Paren {
                 s0,
                 inner,