Rollup merge of #86852 - Amanieu:remove_doc_aliases, r=joshtriplett

Remove some doc aliases

As per the new doc alias policy in https://github.com/rust-lang/std-dev-guide/pull/25, this removes some controversial doc aliases:
- `malloc`, `alloc`, `realloc`, etc.
- `length` (alias for `len`)
- `delete` (alias for `remove` in collections and also file/directory deletion)

r? `@joshtriplett`

library/alloc/src/boxed.rs

@@ -187,8 +187,6 @@ impl<T> Box<T> {
     /// ```
     #[cfg(not(no_global_oom_handling))]
     #[inline(always)]
-    #[doc(alias = "alloc")]
-    #[doc(alias = "malloc")]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn new(x: T) -> Self {
         box x
@@ -239,7 +237,6 @@ pub fn new_uninit() -> Box<mem::MaybeUninit<T>> {
     /// [zeroed]: mem::MaybeUninit::zeroed
     #[cfg(not(no_global_oom_handling))]
     #[inline]
-    #[doc(alias = "calloc")]
     #[unstable(feature = "new_uninit", issue = "63291")]
     pub fn new_zeroed() -> Box<mem::MaybeUninit<T>> {
         Self::new_zeroed_in(Global)

library/alloc/src/collections/binary_heap.rs

@@ -1034,7 +1034,6 @@ pub fn into_vec(self) -> Vec<T> {
     ///
     /// assert_eq!(heap.len(), 2);
     /// ```
-    #[doc(alias = "length")]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn len(&self) -> usize {
         self.data.len()

library/alloc/src/collections/btree/map.rs

@@ -889,7 +889,6 @@ pub fn try_insert(&mut self, key: K, value: V) -> Result<&mut V, OccupiedError<'
     /// assert_eq!(map.remove(&1), Some("a"));
     /// assert_eq!(map.remove(&1), None);
     /// ```
-    #[doc(alias = "delete")]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn remove<Q: ?Sized>(&mut self, key: &Q) -> Option<V>
     where
@@ -2165,7 +2164,6 @@ pub fn values_mut(&mut self) -> ValuesMut<'_, K, V> {
     /// a.insert(1, "a");
     /// assert_eq!(a.len(), 1);
     /// ```
-    #[doc(alias = "length")]
     #[stable(feature = "rust1", since = "1.0.0")]
     #[rustc_const_unstable(feature = "const_btree_new", issue = "71835")]
     pub const fn len(&self) -> usize {

library/alloc/src/collections/btree/set.rs

@@ -810,7 +810,6 @@ pub fn replace(&mut self, value: T) -> Option<T>
     /// assert_eq!(set.remove(&2), true);
     /// assert_eq!(set.remove(&2), false);
     /// ```
-    #[doc(alias = "delete")]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn remove<Q: ?Sized>(&mut self, value: &Q) -> bool
     where
@@ -1021,7 +1020,6 @@ pub fn iter(&self) -> Iter<'_, T> {
     /// v.insert(1);
     /// assert_eq!(v.len(), 1);
     /// ```
-    #[doc(alias = "length")]
     #[stable(feature = "rust1", since = "1.0.0")]
     #[rustc_const_unstable(feature = "const_btree_new", issue = "71835")]
     pub const fn len(&self) -> usize {

library/alloc/src/collections/linked_list.rs

@@ -586,7 +586,6 @@ pub fn is_empty(&self) -> bool {
     /// dl.push_back(3);
     /// assert_eq!(dl.len(), 3);
     /// ```
-    #[doc(alias = "length")]
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn len(&self) -> usize {

library/alloc/src/collections/vec_deque/mod.rs

@@ -1036,7 +1036,6 @@ pub fn as_mut_slices(&mut self) -> (&mut [T], &mut [T]) {
     /// v.push_back(1);
     /// assert_eq!(v.len(), 1);
     /// ```
-    #[doc(alias = "length")]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn len(&self) -> usize {
         count(self.tail, self.head, self.cap())

library/alloc/src/macros.rs

@@ -35,8 +35,6 @@
 ///
 /// [`Vec`]: crate::vec::Vec
 #[cfg(not(test))]
-#[doc(alias = "alloc")]
-#[doc(alias = "malloc")]
 #[macro_export]
 #[stable(feature = "rust1", since = "1.0.0")]
 #[allow_internal_unstable(box_syntax, liballoc_internals)]

library/alloc/src/string.rs

@@ -419,8 +419,6 @@ pub const fn new() -> String {
     /// ```
     #[cfg(not(no_global_oom_handling))]
     #[inline]
-    #[doc(alias = "alloc")]
-    #[doc(alias = "malloc")]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn with_capacity(capacity: usize) -> String {
         String { vec: Vec::with_capacity(capacity) }
@@ -1534,7 +1532,6 @@ pub unsafe fn as_mut_vec(&mut self) -> &mut Vec<u8> {
     /// assert_eq!(fancy_f.len(), 4);
     /// assert_eq!(fancy_f.chars().count(), 3);
     /// ```
-    #[doc(alias = "length")]
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn len(&self) -> usize {

library/alloc/src/vec/mod.rs

@@ -459,7 +459,6 @@ pub const fn new() -> Self {
     /// ```
     #[cfg(not(no_global_oom_handling))]
     #[inline]
-    #[doc(alias = "malloc")]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn with_capacity(capacity: usize) -> Self {
         Self::with_capacity_in(capacity, Global)
@@ -799,7 +798,6 @@ pub fn capacity(&self) -> usize {
     /// assert!(vec.capacity() >= 11);
     /// ```
     #[cfg(not(no_global_oom_handling))]
-    #[doc(alias = "realloc")]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn reserve(&mut self, additional: usize) {
         self.buf.reserve(self.len, additional);
@@ -826,7 +824,6 @@ pub fn reserve(&mut self, additional: usize) {
     /// assert!(vec.capacity() >= 11);
     /// ```
     #[cfg(not(no_global_oom_handling))]
-    #[doc(alias = "realloc")]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn reserve_exact(&mut self, additional: usize) {
         self.buf.reserve_exact(self.len, additional);
@@ -864,7 +861,6 @@ pub fn reserve_exact(&mut self, additional: usize) {
     /// }
     /// # process_data(&[1, 2, 3]).expect("why is the test harness OOMing on 12 bytes?");
     /// ```
-    #[doc(alias = "realloc")]
     #[unstable(feature = "try_reserve", reason = "new API", issue = "48043")]
     pub fn try_reserve(&mut self, additional: usize) -> Result<(), TryReserveError> {
         self.buf.try_reserve(self.len, additional)
@@ -906,7 +902,6 @@ pub fn try_reserve(&mut self, additional: usize) -> Result<(), TryReserveError>
     /// }
     /// # process_data(&[1, 2, 3]).expect("why is the test harness OOMing on 12 bytes?");
     /// ```
-    #[doc(alias = "realloc")]
     #[unstable(feature = "try_reserve", reason = "new API", issue = "48043")]
     pub fn try_reserve_exact(&mut self, additional: usize) -> Result<(), TryReserveError> {
         self.buf.try_reserve_exact(self.len, additional)
@@ -927,7 +922,6 @@ pub fn try_reserve_exact(&mut self, additional: usize) -> Result<(), TryReserveE
     /// assert!(vec.capacity() >= 3);
     /// ```
     #[cfg(not(no_global_oom_handling))]
-    #[doc(alias = "realloc")]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn shrink_to_fit(&mut self) {
         // The capacity is never less than the length, and there's nothing to do when
@@ -958,7 +952,6 @@ pub fn shrink_to_fit(&mut self) {
     /// assert!(vec.capacity() >= 3);
     /// ```
     #[cfg(not(no_global_oom_handling))]
-    #[doc(alias = "realloc")]
     #[unstable(feature = "shrink_to", reason = "new API", issue = "56431")]
     pub fn shrink_to(&mut self, min_capacity: usize) {
         if self.capacity() > min_capacity {
@@ -1820,7 +1813,6 @@ pub fn clear(&mut self) {
     /// let a = vec![1, 2, 3];
     /// assert_eq!(a.len(), 3);
     /// ```
-    #[doc(alias = "length")]
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn len(&self) -> usize {

library/core/src/iter/traits/exact_size.rs

@@ -97,7 +97,6 @@ pub trait ExactSizeIterator: Iterator {
     ///
     /// assert_eq!(5, five.len());
     /// ```
-    #[doc(alias = "length")]
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
     fn len(&self) -> usize {

library/core/src/slice/mod.rs

@@ -95,7 +95,6 @@ impl<T> [T] {
     /// let a = [1, 2, 3];
     /// assert_eq!(a.len(), 3);
     /// ```
-    #[doc(alias = "length")]
     #[cfg_attr(not(bootstrap), lang = "slice_len_fn")]
     #[stable(feature = "rust1", since = "1.0.0")]
     #[rustc_const_stable(feature = "const_slice_len", since = "1.39.0")]

library/core/src/str/mod.rs

@@ -138,7 +138,6 @@ impl str {
     /// assert_eq!("ƒoo".len(), 4); // fancy f!
     /// assert_eq!("ƒoo".chars().count(), 3);
     /// ```
-    #[doc(alias = "length")]
     #[stable(feature = "rust1", since = "1.0.0")]
     #[rustc_const_stable(feature = "const_str_len", since = "1.39.0")]
     #[inline]

library/std/src/collections/hash/map.rs

@@ -454,7 +454,6 @@ pub fn iter_mut(&mut self) -> IterMut<'_, K, V> {
     /// a.insert(1, "a");
     /// assert_eq!(a.len(), 1);
     /// ```
-    #[doc(alias = "length")]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn len(&self) -> usize {
         self.base.len()
@@ -893,7 +892,6 @@ pub fn try_insert(&mut self, key: K, value: V) -> Result<&mut V, OccupiedError<'
     /// assert_eq!(map.remove(&1), Some("a"));
     /// assert_eq!(map.remove(&1), None);
     /// ```
-    #[doc(alias = "delete")]
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn remove<Q: ?Sized>(&mut self, k: &Q) -> Option<V>

library/std/src/collections/hash/set.rs

@@ -202,7 +202,6 @@ pub fn iter(&self) -> Iter<'_, T> {
     /// v.insert(1);
     /// assert_eq!(v.len(), 1);
     /// ```
-    #[doc(alias = "length")]
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn len(&self) -> usize {
@@ -875,7 +874,6 @@ pub fn replace(&mut self, value: T) -> Option<T> {
     /// assert_eq!(set.remove(&2), true);
     /// assert_eq!(set.remove(&2), false);
     /// ```
-    #[doc(alias = "delete")]
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn remove<Q: ?Sized>(&mut self, value: &Q) -> bool

library/std/src/ffi/os_str.rs

@@ -694,7 +694,6 @@ pub fn is_empty(&self) -> bool {
     /// let os_str = OsStr::new("foo");
     /// assert_eq!(os_str.len(), 3);
     /// ```
-    #[doc(alias = "length")]
     #[stable(feature = "osstring_simple_functions", since = "1.9.0")]
     #[inline]
     pub fn len(&self) -> usize {

library/std/src/fs.rs

@@ -1551,7 +1551,6 @@ fn as_inner(&self) -> &fs_imp::DirEntry {
 ///     Ok(())
 /// }
 /// ```
-#[doc(alias = "delete")]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub fn remove_file<P: AsRef<Path>>(path: P) -> io::Result<()> {
     fs_imp::unlink(path.as_ref())
@@ -1986,7 +1985,6 @@ pub fn create_dir_all<P: AsRef<Path>>(path: P) -> io::Result<()> {
 ///     Ok(())
 /// }
 /// ```
-#[doc(alias = "delete")]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub fn remove_dir<P: AsRef<Path>>(path: P) -> io::Result<()> {
     fs_imp::rmdir(path.as_ref())
@@ -2024,7 +2022,6 @@ pub fn remove_dir<P: AsRef<Path>>(path: P) -> io::Result<()> {
 ///     Ok(())
 /// }
 /// ```
-#[doc(alias = "delete")]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub fn remove_dir_all<P: AsRef<Path>>(path: P) -> io::Result<()> {
     fs_imp::remove_dir_all(path.as_ref())