Include shortcut links in markdown_links

Author: Manishearth

src/librustdoc/html/markdown.rs

@@ -731,18 +731,30 @@ pub fn markdown_links(md: &str) -> Vec<String> {
     opts.insert(OPTION_ENABLE_TABLES);
     opts.insert(OPTION_ENABLE_FOOTNOTES);
 
-    let p = Parser::new_ext(md, opts);
-
-    let iter = Footnotes::new(HeadingLinks::new(p, None));
     let mut links = vec![];
+    let shortcut_links = RefCell::new(vec![]);
+
+    {
+        let push = |_: &str, s: &str| {
+            shortcut_links.borrow_mut().push(s.to_owned());
+            None
+        };
+        let p = Parser::new_with_broken_link_callback(md, opts,
+            Some(&push));
 
-    for ev in iter {
-        if let Event::Start(Tag::Link(dest, _)) = ev {
-            debug!("found link: {}", dest);
-            links.push(dest.into_owned());
+        let iter = Footnotes::new(HeadingLinks::new(p, None));
+
+        for ev in iter {
+            if let Event::Start(Tag::Link(dest, _)) = ev {
+                debug!("found link: {}", dest);
+                links.push(dest.into_owned());
+            }
         }
     }
 
+    let mut shortcut_links = shortcut_links.into_inner();
+    links.extend(shortcut_links.drain(..));
+
     links
 }