Auto merge of #49757 - GuillaumeGomez:never-search, r=QuietMisdreavus

Add specific never search

Fixes #49529.

r? @QuietMisdreavus

src/libstd/primitive_docs.rs

@@ -9,6 +9,8 @@
 // except according to those terms.
 
 #[doc(primitive = "bool")]
+#[doc(alias = "true")]
+#[doc(alias = "false")]
 //
 /// The boolean type.
 ///
@@ -68,6 +70,7 @@
 mod prim_bool { }
 
 #[doc(primitive = "never")]
+#[doc(alias = "!")]
 //
 /// The `!` type, also called "never".
 ///
@@ -501,6 +504,9 @@ mod prim_pointer { }
 mod prim_array { }
 
 #[doc(primitive = "slice")]
+#[doc(alias = "[")]
+#[doc(alias = "]")]
+#[doc(alias = "[]")]
 //
 /// A dynamically-sized view into a contiguous sequence, `[T]`.
 ///
@@ -599,6 +605,9 @@ mod prim_slice { }
 mod prim_str { }
 
 #[doc(primitive = "tuple")]
+#[doc(alias = "(")]
+#[doc(alias = ")")]
+#[doc(alias = "()")]
 //
 /// A finite heterogeneous sequence, `(T, U, ..)`.
 ///
@@ -821,6 +830,7 @@ mod prim_isize { }
 mod prim_usize { }
 
 #[doc(primitive = "reference")]
+#[doc(alias = "&")]
 //
 /// References, both shared and mutable.
 ///