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Conflicts:
src/librustc/diagnostics.rs
src/librustdoc/clean/mod.rs
src/librustdoc/html/format.rs
src/libsyntax/parse/parser.rs
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Collaboration with @rylev!
I didn't change `int` in the [quasi-quoter](https://github.com/pshc/rust/blob/99ae1a30f3ca28c0f7e431620560d30e44627124/src/libsyntax/ext/quote.rs#L328), because I'm not sure if there will be adverse effects.
Addresses #21095.
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Contribution from @look!
Addresses https://github.com/rust-lang/rust/issues/21329
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Contribution from @look!
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Conflicts:
src/libsyntax/parse/parser.rs
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Prevents breaking down `$name` tokens into separate `$` and `name`.
Reports unknown macro variables.
Fixes #18775
Fixes #18839
Fixes #15640
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Conflicts:
src/librbml/lib.rs
src/libserialize/json_stage0.rs
src/libserialize/serialize_stage0.rs
src/libsyntax/ast.rs
src/libsyntax/ext/deriving/generic/mod.rs
src/libsyntax/parse/token.rs
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Conflicts:
src/compiletest/runtest.rs
src/libcore/fmt/mod.rs
src/libfmt_macros/lib.rs
src/libregex/parse.rs
src/librustc/middle/cfg/construct.rs
src/librustc/middle/dataflow.rs
src/librustc/middle/infer/higher_ranked/mod.rs
src/librustc/middle/ty.rs
src/librustc_back/archive.rs
src/librustc_borrowck/borrowck/fragments.rs
src/librustc_borrowck/borrowck/gather_loans/mod.rs
src/librustc_resolve/lib.rs
src/librustc_trans/back/link.rs
src/librustc_trans/save/mod.rs
src/librustc_trans/trans/base.rs
src/librustc_trans/trans/callee.rs
src/librustc_trans/trans/common.rs
src/librustc_trans/trans/consts.rs
src/librustc_trans/trans/controlflow.rs
src/librustc_trans/trans/debuginfo.rs
src/librustc_trans/trans/expr.rs
src/librustc_trans/trans/monomorphize.rs
src/librustc_typeck/astconv.rs
src/librustc_typeck/check/method/mod.rs
src/librustc_typeck/check/mod.rs
src/librustc_typeck/check/regionck.rs
src/librustc_typeck/collect.rs
src/libsyntax/ext/format.rs
src/libsyntax/ext/source_util.rs
src/libsyntax/ext/tt/transcribe.rs
src/libsyntax/parse/mod.rs
src/libsyntax/parse/token.rs
src/test/run-pass/issue-8898.rs
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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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Instead of copy-pasting the whole macro_rules! item from the original .rs file,
we serialize a separate name, attributes list, and body, the latter as
pretty-printed TTs. The compilation of macro_rules! macros is decoupled
somewhat from the expansion of macros in item position.
This filters out comments, and facilitates selective imports.
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In the future we want to support
#[macro_use(foo, bar)]
mod macros;
but it's not an essential part of macro reform. Reserve the syntax for now.
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In preparation for the rename.
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First half of bootstrapping https://github.com/rust-lang/rfcs/pull/446
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appropriately.
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Futureproof Rust for fancier suffixed literals. The Rust compiler tokenises a literal followed immediately (no whitespace) by an identifier as a single token: (for example) the text sequences `"foo"bar`, `1baz` and `1u1024` are now a single token rather than the pairs `"foo"` `bar`, `1` `baz` and `1u` `1024` respectively.
The compiler rejects all such suffixes in the parser, except for the 12 numeric suffixes we have now.
I'm fairly sure this will affect very few programs, since it's not currently legal to have `<literal><identifier>` in a Rust program, except in a macro invocation. Any macro invocation relying on this behaviour can simply separate the two tokens with whitespace: `foo!("bar"baz)` becomes `foo!("bar" baz)`.
This implements [RFC 463](https://github.com/rust-lang/rfcs/blob/master/text/0463-future-proof-literal-suffixes.md), and so closes https://github.com/rust-lang/rust/issues/19088.
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This moves errors and all handling of numeric suffixes into the parser
rather than the lexer.
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[breaking-change]
This will break any uses of macros that assumed () being a valid literal.
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Num, NumCast, Unsigned, Float, Primitive and Int have been removed.
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These paths also bind anonymous regions (or will, once HRTB is fully working).
Fixes #18423.
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This common representation for delimeters should make pattern matching easier. Having a separate `token::DelimToken` enum also allows us to enforce the invariant that the opening and closing delimiters must be the same in `ast::TtDelimited`, removing the need to ensure matched delimiters when working with token trees.
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https://github.com/rust-lang/rfcs/pull/221
The current terminology of "task failure" often causes problems when
writing or speaking about code. You often want to talk about the
possibility of an operation that returns a Result "failing", but cannot
because of the ambiguity with task failure. Instead, you have to speak
of "the failing case" or "when the operation does not succeed" or other
circumlocutions.
Likewise, we use a "Failure" header in rustdoc to describe when
operations may fail the task, but it would often be helpful to separate
out a section describing the "Err-producing" case.
We have been steadily moving away from task failure and toward Result as
an error-handling mechanism, so we should optimize our terminology
accordingly: Result-producing functions should be easy to describe.
To update your code, rename any call to `fail!` to `panic!` instead.
Assuming you have not created your own macro named `panic!`, this
will work on UNIX based systems:
grep -lZR 'fail!' . | xargs -0 -l sed -i -e 's/fail!/panic!/g'
You can of course also do this by hand.
[breaking-change]
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