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This is an alternative to ee6459d6521cf6a4c2e08b6e13ce3c6ce5d55ed0.
That is, it fixes the issue that affects the very long type names
in https://docs.rs/async-stripe/0.31.0/stripe/index.html#structs.
This is, necessarily, a pile of nasty heuristics.
We need to balance a few issues:
- Sometimes, there's no real word break.
For example, `BTreeMap` should be `BTree<wbr>Map`,
not `B<wbr>Tree<wbr>Map`.
- Sometimes, there's a legit word break,
but the name is tiny and the HTML overhead isn't worth it.
For example, if we're typesetting `TyCtx`,
writing `Ty<wbr>Ctx` would have an HTML overhead of 50%.
Line breaking inside it makes no sense.
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Escaping quote marks is only needed in attributes, not text.
```console
$ du -hs doc-old/ doc-new/
670M doc-old/
669M doc-new/
```
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* Reuse memory
* simplify `next_def_id`, avoid multiple hashing and unnecessary lookups
* remove `all_fake_def_ids`, use the global map instead (probably not a good step toward parallelization, though...)
* convert `add_deref_target` to iterative implementation
* use `ArrayVec` where we know the max number of elements
* minor touchups here and there
* avoid building temporary vectors that get appended to other vectors
At most places I may or may not be doing the compiler's job is this PR.
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This gives warnings about dead code.
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Automated conversion using the untry tool [1] and the following command:
```
$ find -name '*.rs' -type f | xargs untry
```
at the root of the Rust repo.
[1]: https://github.com/japaric/untry
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Conflicts:
src/libcore/ops.rs
src/librustc_typeck/astconv.rs
src/libstd/io/mem.rs
src/libsyntax/parse/lexer/mod.rs
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This commit is an implementation of [RFC 565][rfc] which is a stabilization of
the `std::fmt` module and the implementations of various formatting traits.
Specifically, the following changes were performed:
[rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0565-show-string-guidelines.md
* The `Show` trait is now deprecated, it was renamed to `Debug`
* The `String` trait is now deprecated, it was renamed to `Display`
* Many `Debug` and `Display` implementations were audited in accordance with the
RFC and audited implementations now have the `#[stable]` attribute
* Integers and floats no longer print a suffix
* Smart pointers no longer print details that they are a smart pointer
* Paths with `Debug` are now quoted and escape characters
* The `unwrap` methods on `Result` now require `Display` instead of `Debug`
* The `Error` trait no longer has a `detail` method and now requires that
`Display` must be implemented. With the loss of `String`, this has moved into
libcore.
* `impl<E: Error> FromError<E> for Box<Error>` now exists
* `derive(Show)` has been renamed to `derive(Debug)`. This is not currently
warned about due to warnings being emitted on stage1+
While backwards compatibility is attempted to be maintained with a blanket
implementation of `Display` for the old `String` trait (and the same for
`Show`/`Debug`) this is still a breaking change due to primitives no longer
implementing `String` as well as modifications such as `unwrap` and the `Error`
trait. Most code is fairly straightforward to update with a rename or tweaks of
method calls.
[breaking-change]
Closes #21436
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fmt::Show is for debugging, and can and should be implemented for
all public types. This trait is used with `{:?}` syntax. There still
exists #[derive(Show)].
fmt::String is for types that faithfully be represented as a String.
Because of this, there is no way to derive fmt::String, all
implementations must be purposeful. It is used by the default format
syntax, `{}`.
This will break most instances of `{}`, since that now requires the type
to impl fmt::String. In most cases, replacing `{}` with `{:?}` is the
correct fix. Types that were being printed specifically for users should
receive a fmt::String implementation to fix this.
Part of #20013
[breaking-change]
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This commit is an implementation of [RFC 526][rfc] which is a change to alter
the definition of the old `fmt::FormatWriter`. The new trait, renamed to
`Writer`, now only exposes one method `write_str` in order to guarantee that all
implementations of the formatting traits can only produce valid Unicode.
[rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0526-fmt-text-writer.md
One of the primary improvements of this patch is the performance of the
`.to_string()` method by avoiding an almost-always redundant UTF-8 check. This
is a breaking change due to the renaming of the trait as well as the loss of the
`write` method, but migration paths should be relatively easy:
* All usage of `write` should move to `write_str`. If truly binary data was
being written in an implementation of `Show`, then it will need to use a
different trait or an altogether different code path.
* All usage of `write!` should continue to work as-is with no modifications.
* All usage of `Show` where implementations just delegate to another should
continue to work as-is.
[breaking-change]
Closes #20352
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1. Wherever the `buf` field of a `Formatter` was used, the `Formatter` is used
instead.
2. The usage of `write_fmt` is minimized as much as possible, the `write!` macro
is preferred wherever possible.
3. Usage of `fmt::write` is minimized, favoring the `write!` macro instead.
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This commit deals with the fallout of the previous change by making tuples
structs have public fields where necessary (now that the fields are private by
default).
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This "bubble up an error" macro was originally named if_ok! in order to get it
landed, but after the fact it was discovered that this name is not exactly
desirable.
The name `if_ok!` isn't immediately clear that is has much to do with error
handling, and it doesn't look fantastic in all contexts (if if_ok!(...) {}). In
general, the agreed opinion about `if_ok!` is that is came in as subpar.
The name `try!` is more invocative of error handling, it's shorter by 2 letters,
and it looks fitting in almost all circumstances. One concern about the word
`try!` is that it's too invocative of exceptions, but the belief is that this
will be overcome with documentation and examples.
Close #12037
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Poly and String have polymorphic `impl`s and so require different method
names.
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This is a better name with which to have a #[deriving] mode.
Decision in:
https://github.com/mozilla/rust/wiki/Meeting-weekly-2014-01-28
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Also remove all instances of 'self within the codebase.
This fixes #10889.
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This addresses some of @huonw's in #9691 about the startling lack of
documentation guiding one throughout the innards of rustdoc::html
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All items have source links back to their actual code. Source files can be
omitted with the doc(html_no_source) attribute on the crate. Currently there is
no syntax highlighting, but that will come with syntax highlighting with all
other snippets.
Closes #2072
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