add test with multiple levels of indents

Author: lqd

tests/source/doc-attrib.rs

@@ -8,4 +8,18 @@ struct A { #[doc = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 
 
 #[doc = "The `nodes` and `edges` method each return instantiations of `Cow<[T]>` to leave implementers the freedom to create entirely new vectors or to pass back slices into internally owned vectors."]
-struct B { b: i32 }
+struct B { b: i32 }
+
+
+#[doc = "Level 1 comment"]
+mod tests {
+    #[doc = "Level 2 comment"]
+    impl A {
+        #[doc = "Level 3 comment"]
+        fn f() {
+            #[doc = "Level 4 comment"]
+            fn g() {                
+            }
+        }
+    }
+}

tests/target/doc-attrib.rs

@@ -15,3 +15,15 @@ struct A {
 struct B {
     b: i32,
 }
+
+/// Level 1 comment
+mod tests {
+    /// Level 2 comment
+    impl A {
+        /// Level 3 comment
+        fn f() {
+            /// Level 4 comment
+            fn g() {}
+        }
+    }
+}