I found the description as it stands a bit confusing. I've added a bit more explanation to make it clear that a trailing line ending does not produce a final empty line.

Added fixes to documentation of `BitAnd`, `BitOr`, `BitXor` and
`BitAndAssign`, where the documentation for implementation on
`Vector<bool>` was using logical operators in place of the bitwise
operators.

r? @steveklabnik
cc rust-lang#78619

Partial comparison and total_cmp are not equal. This helps
preventing the mistake of creating float wrappers that
base their Ord impl on total_cmp and their PartialOrd impl on
the PartialOrd impl of the float type. PartialOrd and Ord
are required to agree with each other.

These methods were stabilized for the integer atomics in rust-lang#71843, but the methods
were not added for the non-integer atomics `AtomicBool` and `AtomicPtr`.

Clarify handling of final line ending in str::lines()

I found the description as it stands a bit confusing. I've added a bit more explanation to make it clear that a trailing line ending does not produce a final empty line.

Do not remove tokens before AST json serialization

`TokenStripper` is error-prone and introduces one more use of `MutVisitor`.
It's much simpler to treat serialization as just one more place that wants lazy token stream to turn into a real token stream.
Also, no code is better than more code, in general.
r? @Aaron1011

(I also merged tests for `TokenStripper` ICEs into one.)

Trivial fixes to bitwise operator documentation

Added fixes to documentation of `BitAnd`, `BitOr`, `BitXor` and
`BitAndAssign`, where the documentation for implementation on
`Vector<bool>` was using logical operators in place of the bitwise
operators.

r? @steveklabnik
Closes rust-lang#78619

Point out that total_cmp is no strict superset of partial comparison

Partial comparison and total_cmp are not equal. This helps
preventing the mistake of creating float wrappers that
base their Ord impl on total_cmp and their PartialOrd impl on
the PartialOrd impl of the float type. PartialOrd and Ord
[are required to agree with each other](https://doc.rust-lang.org/std/cmp/trait.Ord.html#how-can-i-implement-ord).

Add fetch_update methods to AtomicBool and AtomicPtr

These methods were stabilized for the integer atomics in rust-lang#71843, but the methods were not added for the non-integer atomics `AtomicBool` and `AtomicPtr`.