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Merge #4424

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4424: Use RA_LOG instead of RUST_LOG for logging r=matklad a=matklad

RUST_LOG might be set up for debugging the user's problem, slowing
down rust-analyzer considerably. That's the same reason why rustc uses
RUSTC_LOG.



bors r+
🤖

Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
This commit is contained in:
bors[bot] 2020-05-11 17:16:26 +00:00 committed by GitHub
commit 115347a9c6
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3 changed files with 3 additions and 3 deletions
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2
crates/rust-analyzer/src/bin/main.rs
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@ -60,7 +60,7 @@ fn main() -> Result<()> {
fn setup_logging() -> Result<()> {
std::env::set_var("RUST_BACKTRACE", "short");
env_logger::try_init()?;
env_logger::try_init_from_env("RA_LOG")?;
ra_prof::init();
Ok(())
}

2
docs/dev/README.md
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@ -134,7 +134,7 @@ To log all communication between the server and the client, there are two choice
* you can log on the server side, by running something like
```
env RUST_LOG=gen_lsp_server=trace code .
env RA_LOG=gen_lsp_server=trace code .
```
* you can log on the client side, by enabling `"rust-analyzer.trace.server":

2
docs/user/readme.adoc
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@ -108,7 +108,7 @@ Here are some useful self-diagnostic commands:
* **Rust Analyzer: Show RA Version** shows the version of `rust-analyzer` binary
* **Rust Analyzer: Status** prints some statistics about the server, like the few latest LSP requests
* To enable server-side logging, run with `env RUST_LOG=info` and see `Output > Rust Analyzer Language Server` in VS Code's panel.
* To enable server-side logging, run with `env RA_LOG=info` and see `Output > Rust Analyzer Language Server` in VS Code's panel.
* To log all LSP requests, add `"rust-analyzer.trace.server": "verbose"` to the settings and look for `Server Trace` in the panel.
* To enable client-side logging, add `"rust-analyzer.trace.extension": true` to the settings and open the `Console` tab of VS Code developer tools.