This is a deprecated attribute that is slated for removal, and it also affects
all implementors of the trait. This commit removes the attribute and fixes up
implementors accordingly. The primary implementation which was lost was the
ability to compare `&[T]` and `Vec<T>` (in that order).
This change also modifies the `assert_eq!` macro to not consider both directions
of equality, only the one given in the left/right forms to the macro. This
modification is motivated due to the fact that `&[T] == Vec<T>` no longer
compiles, causing hundreds of errors in unit tests in the standard library (and
likely throughout the community as well).
cc #19470
[breaking-change]
Here's my PR for the changes discussed in #19823. I decided to leave `_these_` types of italics the way there were because it differentiates the use of italics for emphasis from `*key term*` italics. Otherwise, bolded terms have been changed to italics, and single and double quotes have been changed appropriately, depending on their context (my judgement may not be the best, though).
r? @steveklabnik (congratulations on #19897 being finalized and merged, by the way!)
This commit is an attempt to standardize the use of punctuation and
formatting in "The Rust Programming Language" as discussed in #19823.
- Convert bold text to italicized textcwhen referring to terminology.
- Convert single-quoted text to italicized or double-quoted text,
depending on context.
- Use double quotes only in the case of scare quotes or quotations.
