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-rw-r--r--compiler/rustc_lint/src/unused.rs2
-rw-r--r--compiler/rustc_lint_defs/src/builtin.rs2
-rw-r--r--library/alloc/src/collections/btree/map.rs2
-rw-r--r--library/alloc/src/collections/vec_deque/mod.rs10
-rw-r--r--library/alloc/src/vec.rs4
-rw-r--r--library/core/src/mem/maybe_uninit.rs6
-rw-r--r--library/core/src/ops/index.rs2
-rw-r--r--library/core/src/slice/mod.rs8
8 files changed, 18 insertions, 18 deletions
diff --git a/compiler/rustc_lint/src/unused.rs b/compiler/rustc_lint/src/unused.rs
index 4bbc180b226..2a5ad5e6c98 100644
--- a/compiler/rustc_lint/src/unused.rs
+++ b/compiler/rustc_lint/src/unused.rs
@@ -1152,7 +1152,7 @@ declare_lint! {
     /// ```rust
     /// #![feature(box_syntax)]
     /// fn main() {
-    ///     let a = (box [1,2,3]).len();
+    ///     let a = (box [1, 2, 3]).len();
     /// }
     /// ```
     ///
diff --git a/compiler/rustc_lint_defs/src/builtin.rs b/compiler/rustc_lint_defs/src/builtin.rs
index 1d0d6980b7a..fa82dce0ae2 100644
--- a/compiler/rustc_lint_defs/src/builtin.rs
+++ b/compiler/rustc_lint_defs/src/builtin.rs
@@ -1719,7 +1719,7 @@ declare_lint! {
     ///
     /// impl<T: ?Sized> MyIterator for T where T: Iterator { }
     ///
-    /// let x = vec![1,2,3];
+    /// let x = vec![1, 2, 3];
     /// let _ = x.iter().is_sorted();
     /// ```
     ///
diff --git a/library/alloc/src/collections/btree/map.rs b/library/alloc/src/collections/btree/map.rs
index 6641ad33f92..a9e41687590 100644
--- a/library/alloc/src/collections/btree/map.rs
+++ b/library/alloc/src/collections/btree/map.rs
@@ -1037,7 +1037,7 @@ impl<K: Ord, V> BTreeMap<K, V> {
     /// let mut count: BTreeMap<&str, usize> = BTreeMap::new();
     ///
     /// // count the number of occurrences of letters in the vec
-    /// for x in vec!["a","b","a","c","a","b"] {
+    /// for x in vec!["a", "b", "a", "c", "a", "b"] {
     ///     *count.entry(x).or_insert(0) += 1;
     /// }
     ///
diff --git a/library/alloc/src/collections/vec_deque/mod.rs b/library/alloc/src/collections/vec_deque/mod.rs
index 1c183858e7a..85c809e0d18 100644
--- a/library/alloc/src/collections/vec_deque/mod.rs
+++ b/library/alloc/src/collections/vec_deque/mod.rs
@@ -1962,7 +1962,7 @@ impl<T> VecDeque<T> {
     /// ```
     /// use std::collections::VecDeque;
     ///
-    /// let mut buf: VecDeque<_> = vec![1,2,3].into_iter().collect();
+    /// let mut buf: VecDeque<_> = vec![1, 2, 3].into_iter().collect();
     /// let buf2 = buf.split_off(1);
     /// assert_eq!(buf, [1]);
     /// assert_eq!(buf2, [2, 3]);
@@ -2514,10 +2514,10 @@ impl<T> VecDeque<T> {
     ///          (3, 1), (1, 2), (2, 3), (4, 5), (5, 8), (3, 13),
     ///          (1, 21), (2, 34), (4, 55)].into();
     ///
-    /// assert_eq!(deque.binary_search_by_key(&13, |&(a,b)| b),  Ok(9));
-    /// assert_eq!(deque.binary_search_by_key(&4, |&(a,b)| b),   Err(7));
-    /// assert_eq!(deque.binary_search_by_key(&100, |&(a,b)| b), Err(13));
-    /// let r = deque.binary_search_by_key(&1, |&(a,b)| b);
+    /// assert_eq!(deque.binary_search_by_key(&13, |&(a, b)| b),  Ok(9));
+    /// assert_eq!(deque.binary_search_by_key(&4, |&(a, b)| b),   Err(7));
+    /// assert_eq!(deque.binary_search_by_key(&100, |&(a, b)| b), Err(13));
+    /// let r = deque.binary_search_by_key(&1, |&(a, b)| b);
     /// assert!(matches!(r, Ok(1..=4)));
     /// ```
     #[unstable(feature = "vecdeque_binary_search", issue = "78021")]
diff --git a/library/alloc/src/vec.rs b/library/alloc/src/vec.rs
index 2c8bc3d53ef..82132ef833c 100644
--- a/library/alloc/src/vec.rs
+++ b/library/alloc/src/vec.rs
@@ -849,7 +849,7 @@ impl<T> Vec<T> {
     ///     }
     ///     x.set_len(size);
     /// }
-    /// assert_eq!(&*x, &[0,1,2,3]);
+    /// assert_eq!(&*x, &[0, 1, 2, 3]);
     /// ```
     #[stable(feature = "vec_as_ptr", since = "1.37.0")]
     #[inline]
@@ -1395,7 +1395,7 @@ impl<T> Vec<T> {
     /// # Examples
     ///
     /// ```
-    /// let mut vec = vec![1,2,3];
+    /// let mut vec = vec![1, 2, 3];
     /// let vec2 = vec.split_off(1);
     /// assert_eq!(vec, [1]);
     /// assert_eq!(vec2, [2, 3]);
diff --git a/library/core/src/mem/maybe_uninit.rs b/library/core/src/mem/maybe_uninit.rs
index 660b7db70be..94ac16954a7 100644
--- a/library/core/src/mem/maybe_uninit.rs
+++ b/library/core/src/mem/maybe_uninit.rs
@@ -392,7 +392,7 @@ impl<T> MaybeUninit<T> {
     /// use std::mem::MaybeUninit;
     ///
     /// let mut x = MaybeUninit::<Vec<u32>>::uninit();
-    /// unsafe { x.as_mut_ptr().write(vec![0,1,2]); }
+    /// unsafe { x.as_mut_ptr().write(vec![0, 1, 2]); }
     /// // Create a reference into the `MaybeUninit<T>`. This is okay because we initialized it.
     /// let x_vec = unsafe { &*x.as_ptr() };
     /// assert_eq!(x_vec.len(), 3);
@@ -429,7 +429,7 @@ impl<T> MaybeUninit<T> {
     /// use std::mem::MaybeUninit;
     ///
     /// let mut x = MaybeUninit::<Vec<u32>>::uninit();
-    /// unsafe { x.as_mut_ptr().write(vec![0,1,2]); }
+    /// unsafe { x.as_mut_ptr().write(vec![0, 1, 2]); }
     /// // Create a reference into the `MaybeUninit<Vec<u32>>`.
     /// // This is okay because we initialized it.
     /// let x_vec = unsafe { &mut *x.as_mut_ptr() };
@@ -565,7 +565,7 @@ impl<T> MaybeUninit<T> {
     /// use std::mem::MaybeUninit;
     ///
     /// let mut x = MaybeUninit::<Option<Vec<u32>>>::uninit();
-    /// x.write(Some(vec![0,1,2]));
+    /// x.write(Some(vec![0, 1, 2]));
     /// let x1 = unsafe { x.assume_init_read() };
     /// let x2 = unsafe { x.assume_init_read() };
     /// // We now created two copies of the same vector, leading to a double-free ⚠️ when
diff --git a/library/core/src/ops/index.rs b/library/core/src/ops/index.rs
index 3c2ada57612..a8dea4e9b4e 100644
--- a/library/core/src/ops/index.rs
+++ b/library/core/src/ops/index.rs
@@ -79,7 +79,7 @@ pub trait Index<Idx: ?Sized> {
 /// each can be indexed mutably and immutably.
 ///
 /// ```
-/// use std::ops::{Index,IndexMut};
+/// use std::ops::{Index, IndexMut};
 ///
 /// #[derive(Debug)]
 /// enum Side {
diff --git a/library/core/src/slice/mod.rs b/library/core/src/slice/mod.rs
index 83f22895237..b572aa87f99 100644
--- a/library/core/src/slice/mod.rs
+++ b/library/core/src/slice/mod.rs
@@ -1958,10 +1958,10 @@ impl<T> [T] {
     ///          (1, 2), (2, 3), (4, 5), (5, 8), (3, 13),
     ///          (1, 21), (2, 34), (4, 55)];
     ///
-    /// assert_eq!(s.binary_search_by_key(&13, |&(a,b)| b),  Ok(9));
-    /// assert_eq!(s.binary_search_by_key(&4, |&(a,b)| b),   Err(7));
-    /// assert_eq!(s.binary_search_by_key(&100, |&(a,b)| b), Err(13));
-    /// let r = s.binary_search_by_key(&1, |&(a,b)| b);
+    /// assert_eq!(s.binary_search_by_key(&13, |&(a, b)| b),  Ok(9));
+    /// assert_eq!(s.binary_search_by_key(&4, |&(a, b)| b),   Err(7));
+    /// assert_eq!(s.binary_search_by_key(&100, |&(a, b)| b), Err(13));
+    /// let r = s.binary_search_by_key(&1, |&(a, b)| b);
     /// assert!(match r { Ok(1..=4) => true, _ => false, });
     /// ```
     #[stable(feature = "slice_binary_search_by_key", since = "1.10.0")]