rustdoc: Treat decl macros like other items

tests/rustdoc/macro_rules-matchers.rs

@@ -3,29 +3,17 @@
 
 #![crate_name = "foo"]
 
-//@ has 'foo/macro.todo.html'
-//@ has - '//span[@class="macro"]' 'macro_rules!'
-//@ hasraw - ' todo {'
-
-//@ hasraw - '{ () => { ... }; ($('
-//@ has - '//span[@class="macro-nonterminal"]' '$'
-//@ has - '//span[@class="macro-nonterminal"]' 'arg'
-//@ hasraw - ':tt)+'
-//@ hasraw - ') => { ... }; }'
+//@ has 'foo/macro.todo.html' '//pre' 'macro_rules! todo { \
+//      () => { ... }; \
+//      ($($arg:tt)+) => { ... }; \
+// }'
 pub use std::todo;
 
 mod mod1 {
-    //@ has 'foo/macro.macro1.html'
-    //@ hasraw - 'macro_rules!'
-    //@ hasraw - 'macro1'
-    //@ hasraw - '{ () => { ... }; ($('
-    //@ has - '//span[@class="macro-nonterminal"]' '$'
-    //@ has - '//span[@class="macro-nonterminal"]' 'arg'
-    //@ hasraw - ':'
-    //@ hasraw - 'expr'
-    //@ hasraw - '),'
-    //@ hasraw - '+'
-    //@ hasraw - ') => { ... }; }'
+    //@ has 'foo/macro.macro1.html' '//pre' 'macro_rules! macro1 { \
+    //      () => { ... }; \
+    //      ($($arg:expr),+) => { ... }; \
+    // }'
     #[macro_export]
     macro_rules! macro1 {
         () => {};