use std::path::PathBuf;
use std::process::{self, Command};
+mod docs;
+
const CARGO_CLIPPY_HELP: &str = r#"Checks a package to catch common mistakes and improve your Rust code.
Usage:
--fix Automatically apply lint suggestions. This flag implies `--no-deps`
-h, --help Print this message
-V, --version Print version info and exit
+ --explain LINT Print the documentation for a given lint
Other options are the same as `cargo check`.
return;
}
+ if let Some(pos) = env::args().position(|a| a == "--explain") {
+ if let Some(mut lint) = env::args().nth(pos + 1) {
+ lint.make_ascii_lowercase();
+ docs::explain(&lint.strip_prefix("clippy::").unwrap_or(&lint).replace('-', "_"));
+ } else {
+ show_help();
+ }
+ return;
+ }
+
if let Err(code) = process(env::args().skip(2)) {
process::exit(code);
}
.map(|arg| format!("{}__CLIPPY_HACKERY__", arg))
.collect();
+ // Currently, `CLIPPY_TERMINAL_WIDTH` is used only to format "unknown field" error messages.
+ let terminal_width = termize::dimensions().map_or(0, |(w, _)| w);
+
cmd.env("RUSTC_WORKSPACE_WRAPPER", Self::path())
.env("CLIPPY_ARGS", clippy_args)
+ .env("CLIPPY_TERMINAL_WIDTH", terminal_width.to_string())
.arg(self.cargo_subcommand)
.args(&self.args);