From 12dc24f46007f82b93ed85614347a42d47580afa Mon Sep 17 00:00:00 2001
From: Michael Howell <michael@notriddle.com>
Date: Tue, 24 Sep 2024 18:18:01 -0700
Subject: rustdoc-search: simplify rules for generics and type params

This commit is a response to feedback on the displayed type
signatures results, by making generics act stricter.

Generics are tightened by making order significant. This means
`Vec<Allocator>` now matches only with a true vector of allocators,
instead of matching the second type param. It also makes unboxing
within generics stricter, so `Result<A, B>` only matches if `B`
is in the error type and `A` is in the success type. The top level
of the function search is unaffected.

Find the discussion on:

* <https://rust-lang.zulipchat.com/#narrow/stream/393423-t-rustdoc.2Fmeetings/topic/meeting.202024-07-08/near/449965149>
* <https://github.com/rust-lang/rust/pull/124544#issuecomment-2204272265>
* <https://rust-lang.zulipchat.com/#narrow/channel/266220-t-rustdoc/topic/deciding.20on.20semantics.20of.20generics.20in.20rustdoc.20search/near/476841363>
---
 tests/rustdoc-js/generics-unbox.js | 4 ----
 1 file changed, 4 deletions(-)

(limited to 'tests/rustdoc-js/generics-unbox.js')

diff --git a/tests/rustdoc-js/generics-unbox.js b/tests/rustdoc-js/generics-unbox.js
index 9cdfc7ac8b6..6baf00c814b 100644
--- a/tests/rustdoc-js/generics-unbox.js
+++ b/tests/rustdoc-js/generics-unbox.js
@@ -11,20 +11,17 @@ const EXPECTED = [
         'query': 'Inside<T> -> Out3<T>',
         'others': [
             { 'path': 'generics_unbox', 'name': 'beta' },
-            { 'path': 'generics_unbox', 'name': 'gamma' },
         ],
     },
     {
         'query': 'Inside<T> -> Out4<T>',
         'others': [
-            { 'path': 'generics_unbox', 'name': 'beta' },
             { 'path': 'generics_unbox', 'name': 'gamma' },
         ],
     },
     {
         'query': 'Inside<T> -> Out3<U, T>',
         'others': [
-            { 'path': 'generics_unbox', 'name': 'beta' },
             { 'path': 'generics_unbox', 'name': 'gamma' },
         ],
     },
@@ -32,7 +29,6 @@ const EXPECTED = [
         'query': 'Inside<T> -> Out4<U, T>',
         'others': [
             { 'path': 'generics_unbox', 'name': 'beta' },
-            { 'path': 'generics_unbox', 'name': 'gamma' },
         ],
     },
 ];
-- 
cgit 1.4.1-3-g733a5