add more tests

src/librustdoc/passes/collect_intra_doc_links.rs

@@ -1421,7 +1421,7 @@ fn check_redundant_explicit_link(
                 // For reference-style links we want to report only one error so unsuccessful
                 // resolutions are cached, for other links we want to report an error every
                 // time so they are not cached.
-                matches!(ori_link.kind, LinkType::Reference | LinkType::Shortcut),
+                matches!(ori_link.kind, LinkType::Reference),
             ) else {
                 return;
             };

tests/rustdoc-ui/lints/redundant_explicit_links.rs

@@ -4,16 +4,24 @@ pub fn dummy_target() {}
 
 /// [dummy_target](dummy_target)
 /// [`dummy_target`](dummy_target)
+/// 
 /// [Vec](Vec)
 /// [`Vec`](Vec)
 /// [Vec](std::vec::Vec)
 /// [`Vec`](std::vec::Vec)
+/// [std::vec::Vec](Vec)
+/// [`std::vec::Vec`](Vec)
 /// [std::vec::Vec](std::vec::Vec)
 /// [`std::vec::Vec`](std::vec::Vec)
+/// 
 /// [usize](usize)
 /// [`usize`](usize)
+/// [usize](std::primitive::usize)
+/// [`usize`](std::primitive::usize)
 /// [std::primitive::usize](usize)
 /// [`std::primitive::usize`](usize)
+/// [std::primitive::usize](std::primitive::usize)
+/// [`std::primitive::usize`](std::primitive::usize)
 pub fn should_warn() {}
 
 /// [`Vec<T>`](Vec)