Fix invalid path generation in rustdoc search

Author: GuillaumeGomez

src/librustdoc/html/render.rs

@@ -1427,7 +1427,7 @@ impl<'a> Cache {
         }
         if let Some(ref item_name) = item.name {
             let path = self.paths.get(&item.def_id)
-                                 .map(|p| p.0.join("::").to_string())
+                                 .map(|p| p.0[..p.0.len() - 1].join("::"))
                                  .unwrap_or("std".to_owned());
             for alias in item.attrs.lists("doc")
                                    .filter(|a| a.check_name("alias"))

src/test/rustdoc-js/alias-2.js

@@ -8,11 +8,13 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// ignore-order
+
 const QUERY = '+';
 
 const EXPECTED = {
     'others': [
-        { 'path': 'std::ops::AddAssign', 'name': 'AddAssign' },
-        { 'path': 'std::ops::Add', 'name': 'Add' },
+        { 'path': 'std::ops', 'name': 'AddAssign' },
+        { 'path': 'std::ops', 'name': 'Add' },
     ],
 };

src/test/rustdoc-js/alias.js

@@ -13,7 +13,7 @@ const QUERY = '[';
 const EXPECTED = {
     'others': [
         { 'path': 'std', 'name': 'slice' },
-        { 'path': 'std::ops::IndexMut', 'name': 'IndexMut' },
-        { 'path': 'std::ops::Index', 'name': 'Index' },
+        { 'path': 'std::ops', 'name': 'IndexMut' },
+        { 'path': 'std::ops', 'name': 'Index' },
     ],
 };