rustdoc-search: search never type with `!`

This feature extends rustdoc to support the syntax that most users will
naturally attempt to use to search for diverging functions.
Part of #60485

It's already possible to do this search with `primitive:never`, but
that's not what the Rust language itself uses, so nobody will try it if
they aren't told or helped along.

1 files changed, 14 insertions, 6 deletions

diff --git a/tests/rustdoc-js-std/never.js b/tests/rustdoc-js-std/never.js
index ed3776b3c2a..27d415b5e48 100644
--- a/tests/rustdoc-js-std/never.js
+++ b/tests/rustdoc-js-std/never.js
@@ -1,6 +1,14 @@
-const EXPECTED = {
-    'query': '!',
-    'others': [
-        { 'path': 'std', 'name': 'never' },
-    ],
-};
+const EXPECTED = [
+    {
+        'query': '!',
+        'others': [
+            { 'path': 'std', 'name': 'never' },
+        ],
+    },
+    {
+        'query': '!::clone',
+        'others': [
+            { 'path': 'std::never', 'name': 'clone' },
+        ],
+    },
+];