rustc: implement argsfiles for command line
Many tools, such as gcc and gnu-ld, support "args files" - that is, being able to specify @file on the command line. This causes `file` to be opened and parsed for command line options. They're separated with whitespace; whitespace can be quoted with double or single quotes, and everything can be \\-escaped. Args files may recursively include other args files via `@file2`.
See https://sourceware.org/binutils/docs/ld/Options.html#Options for the documentation of gnu-ld's @file parameters.
This is useful for very large command lines, or when command lines are being generated into files by other tooling.
Run Clippy without json-rendered flag
Removed in https://github.com/rust-lang/rust/pull/62766
Replacing it with `--json=diagnostic-rendered-ansi` fails:
```
error: using `--json` requires also using `--error-format=json`
```
Running `./x.py clippy src/libstd` locally works fine (with colors) on Linux so I don't know if there is something to fix.
Improve diagnostics: break/continue in wrong context
- Fix#63712
- Use `` `break` `` or `` `continue` `` instead of always `break` in `cannot _...`
- Show the enclosing closure or async block we're talking about
- `` `break` outside of loop `` -> `` `break` outside of a loop `` for consistency
r? @estebank
take into account the system theme
Fixes#61079.
The CSS can now take into account the system theme. I used it to generate some content on the document and from there, if no theme has already been selected, it'll look at the system level theme.
r? @QuietMisdreavus
cc @fenhl
Rollup of 7 pull requests
Successful merges:
- #63721 (Do not emit JSON dumps of diagnostic codes)
- #63753 (Bump toml dependency.)
- #63755 (Use dedicated type for spans in pre-expansion gating.)
- #63759 (Allow 'default async fn' to parse.)
- #63760 (Update books)
- #63762 (`async_await` was stabilized in 1.39.0, not 1.38.0.)
- #63766 (Remove some duplication when resolving constants)
Failed merges:
r? @ghost
Update books
## nomicon
25 commits in 8a7d05615e5bc0a7fb961b4919c44f5221ee54da..38b9a76bc8b59ac862663807fc51c9b757337fd6
2019-08-07 07:46:59 -0500 to 2019-08-19 10:04:32 -0400
- Fix transmute_copy link
- some edits
- drop parenthetical
- clarify dangling
- fix def.n of dangling
- fold uninit integer rule with reading uninit memory
- refactor null a bit
- resolve some nits
- raw ptrs must be initialized like integers
- Apply suggestions from code review
- explain when metadata is invalid
- mention !
- add more cases of UB
- avoid redundant UB
- stick to broader UB for raw ptr offsets/derefs for now
- be more precise about dangling
- subsume the NonNull things as library types
- handle recursion in the heading
- Define 'producing'
- NonNull, NonZero*
- list more ptr offset computations
- UB
- Fix typo in subtyping
- Add colon to `MySuperSliceable` too
- Fix typo `str::mem` to `std::mem`
## reference
2 commits in b4b3536839042a6743fc76f0d9ad2a812020aeaa..d191a0cdd3b92648e0f1e53b13140a14677cc65b
2019-08-07 02:29:50 +0200 to 2019-08-15 08:42:23 +0200
- Fix warning in stable-check (rust-lang-nursery/reference#653)
- our closure syntax comes from Ruby (rust-lang-nursery/reference#650)
## rust-by-example
5 commits in f2c15ba5ee89ae9469a2cf60494977749901d764..580839d90aacd537f0293697096fa8355bc4e673
2019-08-07 10:14:25 -0300 to 2019-08-17 23:17:50 -0300
- macros.md: Changing Sometime to more appropriate adverb form Sometimes (rust-lang/rust-by-example#1243)
- Add colon after "See Also" (rust-lang/rust-by-example#1242)
- Update enter_question_mark.md (rust-lang/rust-by-example#1208)
- Add destructuring bind examples (rust-lang/rust-by-example#1238)
- Change initial parameters in `fibonacci()` call. (rust-lang/rust-by-example#1241)
## embedded-book
1 commits in c5da1e11915d3f28266168baaf55822f7e3fe999..432ca26686c11d396eed6a59499f93ce1bf2433c
2019-08-05 23:02:10 +0000 to 2019-08-09 23:20:22 +0000
- semihosting: add comment adding feature flag to panic-semihosting (rust-embedded/book#203)
