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Merge #4596 
4596: Strip leading underscores of argument names in function/method r=matklad a=kuy

Closes #4510 

### Goal

When I select a function/method from completions, I get a snippet that doesn't contain leading underscores of argument names.

### Solution

- Option 1: All signatures don't contain underscores
- Option 2: Keep same signature, but inserted snippet doesn't contain underscores

I choose Option 2 because I think that leading underscores is a part of "signature". Users should get correct signatures. On the other hand, trimming underscores is an assist by IDE.

### Other impls.

rls: Complete argument names with underscores (same as actual ra)
IntelliJ Rust: Doesn't complete argument names
VSCode (TypeScript): Doesn't complete argument names

### Working example

![Screen Shot 2020-05-25 at 0 03 21](https://user-images.githubusercontent.com/151614/82757771-a05e5b80-9e1d-11ea-9dbc-1263c960e2ae.png)


Co-authored-by: Yuki Kodama <endflow.net@gmail.com>
2020-05-27 12:41:38 +00:00
.cargo Alternative quite tests alias 2019-11-20 22:22:32 +03:00
.github Fix conflict between nightly branch and tag 2020-05-25 16:31:19 +02:00
.vscode vscode client side tests 2020-05-20 22:31:39 +03:00
crates Merge #4596 2020-05-27 12:41:38 +00:00
docs typo 2020-05-27 14:04:57 +03:00
editors/code Merge #4625 #4629 2020-05-27 12:34:03 +00:00
xtask New assist: add turbo fish 2020-05-20 00:27:10 +02:00
.gitattributes Set text to autodetect and use LF 2019-11-14 19:44:37 -05:00
.gitignore cargo xtask dist 2020-03-04 18:18:20 +01:00
bors.toml Fix bors config? 2020-05-24 16:07:46 +02:00
Cargo.lock Update lexer 2020-05-26 14:35:09 -04:00
Cargo.toml Extend analysis-stats a bit 2020-02-15 18:04:01 +01:00
LICENSE-APACHE Licenses 2018-01-10 22:47:04 +03:00
LICENSE-MIT Licenses 2018-01-10 22:47:04 +03:00
README.md Link proper docs from readme 2020-03-05 17:26:47 +01:00
rustfmt.toml Remove forcing \n via rustfmt 2019-11-02 22:19:59 +03:00

README.md

rust-analyzer logo

rust-analyzer is an experimental modular compiler frontend for the Rust language. It is a part of a larger rls-2.0 effort to create excellent IDE support for Rust. If you want to get involved, check the rls-2.0 working group:

https://rust-lang.zulipchat.com/#narrow/stream/185405-t-compiler.2Fwg-rls-2.2E0

Work on rust-analyzer is sponsored by

Ferrous Systems

Quick Start

https://rust-analyzer.github.io/manual.html#installation

Documentation

If you want to contribute to rust-analyzer or are just curious about how things work under the hood, check the ./docs/dev folder.

If you want to use rust-analyzer's language server with your editor of choice, check the manual folder. It also contains some tips & tricks to help you be more productive when using rust-analyzer.

Getting in touch

We are on the rust-lang Zulip!

https://rust-lang.zulipchat.com/#narrow/stream/185405-t-compiler.2Frls-2.2E0

Quick Links

License

Rust analyzer is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0).

See LICENSE-APACHE and LICENSE-MIT for details.