Add support for image, rules and footnotes

src/test/rustdoc/check-rule-image-footnote.rs

@@ -0,0 +1,35 @@
+// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![crate_name = "foo"]
+
+// @has foo/fn.f.html
+// @has - '<p>hard break: after hard break</p><hr>'
+// @has - '<img src="https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png" alt="Rust">'
+// @has - '<li id="ref1">'
+// @has - '<sup id="supref1"><a href="#ref1">1</a></sup>'
+/// markdown test
+///
+/// this is a [link].
+///
+/// [link]: https://example.com "this is a title"
+///
+/// hard break:
+/// after hard break
+///
+/// -----------
+///
+/// a footnote[^footnote].
+///
+/// [^footnote]: Thing
+///
+/// ![Rust](https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png)
+#[deprecated(note = "Struct<T>")]
+pub fn f() {}