Rollup merge of rust-lang#57314 - wiktorkuchta:master, r=Centril

Fix repeated word typos

Inspired by rust-lang#57295 (I skipped 'be be' because of it) and my [PR in another repo
](cp-algorithms/cp-algorithms#389)
Not a stupid `sed`, I actually tried to fix case by case.

Author: kennytm

src/doc/rustc/src/lints/listing/warn-by-default.md

@@ -24,7 +24,7 @@ warning: attempt to add with overflow
 
 ## dead-code
 
-This lint detects detect unused, unexported items. Some
+This lint detects unused, unexported items. Some
 example code that triggers this lint:
 
 ```rust
@@ -44,7 +44,7 @@ warning: function is never used: `foo`
 
 ## deprecated
 
-This lint detects detects use of deprecated items. Some
+This lint detects use of deprecated items. Some
 example code that triggers this lint:
 
 ```rust
@@ -119,7 +119,7 @@ warning: found struct without foreign-function-safe representation annotation in
 
 ## late-bound-lifetime-arguments
 
-This lint detects detects generic lifetime arguments in path segments with
+This lint detects generic lifetime arguments in path segments with
 late bound lifetime parameters. Some example code that triggers this lint:
 
 ```rust
@@ -381,7 +381,7 @@ extern crate macro_crate_test;
 
 ## private-in-public
 
-This lint detects detect private items in public interfaces not caught by the old implementation. Some
+This lint detects private items in public interfaces not caught by the old implementation. Some
 example code that triggers this lint:
 
 ```rust,ignore
@@ -659,7 +659,7 @@ warning: unknown lint: `not_a_real_lint`
 
 ## unreachable-code
 
-This lint detects detects unreachable code paths. Some example code that
+This lint detects unreachable code paths. Some example code that
 triggers this lint:
 
 ```rust,no_run
@@ -681,7 +681,7 @@ warning: unreachable statement
 
 ## unreachable-patterns
 
-This lint detects detects unreachable patterns. Some
+This lint detects unreachable patterns. Some
 example code that triggers this lint:
 
 ```rust
@@ -716,11 +716,11 @@ annotations now.
 
 ## unused-allocation
 
-This lint detects detects unnecessary allocations that can be eliminated.
+This lint detects unnecessary allocations that can be eliminated.
 
 ## unused-assignments
 
-This lint detects detect assignments that will never be read. Some
+This lint detects assignments that will never be read. Some
 example code that triggers this lint:
 
 ```rust
@@ -741,7 +741,7 @@ warning: value assigned to `x` is never read
 
 ## unused-attributes
 
-This lint detects detects attributes that were not used by the compiler. Some
+This lint detects attributes that were not used by the compiler. Some
 example code that triggers this lint:
 
 ```rust
@@ -785,7 +785,7 @@ warning: comparison is useless due to type limits
 
 ## unused-doc-comment
 
-This lint detects detects doc comments that aren't used by rustdoc. Some
+This lint detects doc comments that aren't used by rustdoc. Some
 example code that triggers this lint:
 
 ```rust
@@ -831,7 +831,7 @@ warning: unused import: `std::collections::HashMap`
 
 ## unused-macros
 
-This lint detects detects macros that were not used. Some example code that
+This lint detects macros that were not used. Some example code that
 triggers this lint:
 
 ```rust
@@ -884,7 +884,7 @@ warning: unused `std::result::Result` that must be used
 
 ## unused-mut
 
-This lint detects detect mut variables which don't need to be mutable. Some
+This lint detects mut variables which don't need to be mutable. Some
 example code that triggers this lint:
 
 ```rust
@@ -946,7 +946,7 @@ warning: unnecessary `unsafe` block
 
 ## unused-variables
 
-This lint detects detect variables which are not used in any way. Some
+This lint detects variables which are not used in any way. Some
 example code that triggers this lint:
 
 ```rust

src/doc/rustdoc/src/documentation-tests.md

@@ -171,7 +171,7 @@ compiles, while only showing the parts that are relevant to that part of your
 explanation.
 
 The `#`-hiding of lines can be prevented by using two consecutive hashes
-`##`. This only needs to be done with with the first `#` which would've
+`##`. This only needs to be done with the first `#` which would've
 otherwise caused hiding. If we have a string literal like the following,
 which has a line that starts with a `#`:
 

src/librustc/infer/opaque_types/mod.rs

@@ -19,7 +19,7 @@ pub type OpaqueTypeMap<'tcx> = DefIdMap<OpaqueTypeDecl<'tcx>>;
 /// appear in the return type).
 #[derive(Copy, Clone, Debug)]
 pub struct OpaqueTypeDecl<'tcx> {
-    /// The substitutions that we apply to the abstract that that this
+    /// The substitutions that we apply to the abstract that this
     /// `impl Trait` desugars to. e.g., if:
     ///
     ///     fn foo<'a, 'b, T>() -> impl Trait<'a>

src/librustc/mir/interpret/value.rs

@@ -79,7 +79,7 @@ pub enum Scalar<Tag=(), Id=AllocId> {
     /// The raw bytes of a simple value.
     Bits {
         /// The first `size` bytes are the value.
-        /// Do not try to read less or more bytes that that. The remaining bytes must be 0.
+        /// Do not try to read less or more bytes than that. The remaining bytes must be 0.
         size: u8,
         bits: u128,
     },

src/librustc/ty/fold.rs

@@ -109,7 +109,7 @@ pub trait TypeFoldable<'tcx>: fmt::Debug + Clone {
         self.has_type_flags(TypeFlags::HAS_FREE_REGIONS)
     }
 
-    /// True if there any any un-erased free regions.
+    /// True if there are any un-erased free regions.
     fn has_erasable_regions(&self) -> bool {
         self.has_type_flags(TypeFlags::HAS_FREE_REGIONS)
     }

src/librustc_apfloat/ieee.rs

@@ -2341,7 +2341,7 @@ mod sig {
             // Our exponent should not underflow.
             *exp = exp.checked_sub(bits as ExpInt).unwrap();
 
-            // Jump is the inter-limb jump; shift is is intra-limb shift.
+            // Jump is the inter-limb jump; shift is the intra-limb shift.
             let jump = bits / LIMB_BITS;
             let shift = bits % LIMB_BITS;
 
@@ -2375,7 +2375,7 @@ mod sig {
             // Our exponent should not overflow.
             *exp = exp.checked_add(bits as ExpInt).unwrap();
 
-            // Jump is the inter-limb jump; shift is is intra-limb shift.
+            // Jump is the inter-limb jump; shift is the intra-limb shift.
             let jump = bits / LIMB_BITS;
             let shift = bits % LIMB_BITS;
 

src/librustc_lint/builtin.rs

@@ -673,7 +673,7 @@ impl EarlyLintPass for AnonymousParameters {
     }
 }
 
-/// Checks for incorrect use use of `repr` attributes.
+/// Checks for incorrect use of `repr` attributes.
 #[derive(Clone)]
 pub struct BadRepr;
 

src/librustc_resolve/diagnostics.rs

@@ -192,7 +192,7 @@ use foo::core;  // error: an extern crate named `core` has already
 fn main() {}
 ```
 
-To fix issue issue, you have to rename at least one of the two imports.
+To fix this issue, you have to rename at least one of the two imports.
 Example:
 
 ```

src/librustc_typeck/astconv.rs

@@ -1,6 +1,6 @@
 //! Conversion from AST representation of types to the `ty.rs` representation.
-//! The main routine here is `ast_ty_to_ty()`; each use is is parameterized by
-//! an instance of `AstConv`.
+//! The main routine here is `ast_ty_to_ty()`; each use is parameterized by an
+//! instance of `AstConv`.
 
 use errors::{Applicability, FatalError, DiagnosticId};
 use hir::{self, GenericArg, GenericArgs};

src/librustc_typeck/check/demand.rs

@@ -335,7 +335,7 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
                 // we may want to suggest adding a `*`, or removing
                 // a `&`.
                 //
-                // (But, also check check the `expn_info()` to see if this is
+                // (But, also check the `expn_info()` to see if this is
                 // a macro; if so, it's hard to extract the text and make a good
                 // suggestion, so don't bother.)
                 if self.infcx.can_sub(self.param_env, checked, &expected).is_ok() &&