Could not add rust-analysis by full name

[sophiajt]

rustup component list shows a full name of components (like rust-analysis-i686-pc-windows-msvc, rust-std-aarch64-apple-ios and so on).

But rustup component add rust-analysis-i686-pc-windows-msvc itself does not work:

error: toolchain 'nightly-i686-pc-windows-msvc' does not contain component 'rust-analysis-i686-pc-windows-msvc' for target 'i686-pc-windows-msvc'

However it works with the short name: rustup component add rust-analysis.

Full log:

> rustup show
...
active toolchain
----------------

nightly-i686-pc-windows-msvc (default)
rustc 1.18.0-nightly (7627e3d31 2017-04-16)

> rustup component list
cargo-i686-pc-windows-msvc (default)
rls-i686-pc-windows-msvc
rust-analysis-i686-pc-windows-msvc
rust-docs-i686-pc-windows-msvc (default)
rust-src
rust-std-aarch64-apple-ios
...

> rustup component add rust-analysis-i686-pc-windows-msvc
error: toolchain 'nightly-i686-pc-windows-msvc' does not contain component 'rust-analysis-i686-pc-windows-msvc' for target 'i686-pc-windows-msvc'

(from: rust-lang/rls#262)

[Diggsey]

Yeah, this is poor UX, it affects docs too, and possibly libstds. It should be possible to install alternate targets by passing --target xyz to rustup component add rust-analysis

[brson]

Yeah since this affects several commands and lists, needs a bit of a think before deciding what to do.

[pravic]

error: toolchain 'stable-i686-pc-windows-msvc' does not contain component 'rust-analysis-i686-pc-windows-msvc' for target 'i686-pc-windows-msvc'

Since the target is already known, why not just split the component name? Or if it is combined (full), do not make full name for such commands and leave it as rust-analysis, rust-src and so on.

[kinnison]

I believe this was resolved by #2088