bors 154f1f544d Auto merge of #77029 - ehuss:command-access, r=dtolnay ... Add accessors to Command. This adds some accessor methods to `Command` to provide a way to access the values set when building the `Command`. An example where this can be useful is to display the command to be executed. This is roughly based on the [`ProcessBuilder`](13b73cdaf7/src/cargo/util/process_builder.rs (L105-L134)) in Cargo. Possible concerns about the API: - Values with NULs on Unix will be returned as `"<string-with-nul>"`. I don't think it is practical to avoid this, since otherwise a whole separate copy of all the values would need to be kept in `Command`. - Does not handle `arg0` on Unix. This can be awkward to support in `get_args` and is rarely used. I figure if someone really wants it, it can be added to `CommandExt` as a separate method. - Does not offer a way to detect `env_clear`. I'm uncertain if it would be useful for anyone. - Does not offer a way to get an environment variable by name (`get_env`). I figure this can be added later if anyone really wants it. I think the motivation for this is weak, though. Also, the API could be a little awkward (return a `Option<Option<&OsStr>>`?). - `get_envs` could skip "cleared" entries and just return `&OsStr` values instead of `Option<&OsStr>`. I'm on the fence here. My use case is to display a shell command, and I only intend it to be roughly equivalent to the actual execution, and I probably won't display `None` entries. I erred on the side of providing extra information, but I suspect many situations will just filter out the `None`s. - Could implement more iterator stuff (like `DoubleEndedIterator`). I have not implemented new std items before, so I'm uncertain if the existing issue should be reused, or if a new tracking issue is needed. cc #44434		2020-10-02 07:51:24 +00:00
..
alloc	BTreeMap: use Unique::from to avoid a cast where type information exists	2020-10-01 15:03:51 +02:00
backtrace@4083a90168	std: Switch from libbacktrace to gimli	2020-07-28 16:34:01 -07:00
core	Rollup merge of #77385 - scottmcm:fix-77220, r=jyn514	2020-10-02 08:25:22 +09:00
panic_abort	Rollup merge of #76866 - est31:master, r=lcnr	2020-09-20 15:51:50 +02:00
panic_unwind	library/{panic_,}unwind: Add definitions for sparc-unknow-linux-gnu	2020-09-28 00:39:57 +02:00
proc_macro	Add a feature gate for basic function pointer use in const fn	2020-09-27 10:46:41 -07:00
profiler_builtins	Fix warning whe building profiler_builtins crate	2020-09-04 15:10:29 +02:00
rtstartup	mv std libs to library/	2020-07-27 19:51:13 -05:00
rustc-std-workspace-alloc	mv std libs to library/	2020-07-27 19:51:13 -05:00
rustc-std-workspace-core	mv std libs to library/	2020-07-27 19:51:13 -05:00
rustc-std-workspace-std	mv std libs to library/	2020-07-27 19:51:13 -05:00
std	Auto merge of #77029 - ehuss:command-access, r=dtolnay	2020-10-02 07:51:24 +00:00
stdarch@b422b0180f	fix redundant delarations of const_fn_transmute	2020-09-27 15:13:32 +08:00
term	mv std libs to library/	2020-07-27 19:51:13 -05:00
test	Rollup merge of #77389 - jyn514:THE-PAPERCLIP-COMETH, r=Mark-Simulacrum	2020-10-02 08:25:24 +09:00
unwind	library/{panic_,}unwind: Add definitions for sparc-unknow-linux-gnu	2020-09-28 00:39:57 +02:00