back in tip top shape

src/bin/cargo/commands/fix.rs

@@ -78,14 +78,6 @@ pub fn cli() -> App {
                 .help("Get fix suggestions from clippy instead of rustc")
                 .hidden(true),
         )
-        .arg(
-            Arg::with_name("clippy-arg")
-                .long("clippy-arg")
-                .help("Args to pass through to clippy, implies --clippy")
-                .hidden(true)
-                .multiple(true)
-                .number_of_values(1),
-        )
         .after_help(
             "\
 This Cargo subcommand will automatically take rustc's suggestions from
@@ -139,7 +131,11 @@ pub fn exec(config: &mut Config, args: &ArgMatches<'_>) -> CliResult {
     // code as we can.
     let mut opts = args.compile_options(config, mode, Some(&ws))?;
 
-    let clippy_args = args.values_of_lossy("clippy-args");
+    let clippy_args = args
+        .value_of("clippy") // always yields None
+        .map(|s| s.split(' ').map(|s| s.to_string()).collect())
+        .or_else(|| Some(vec![]));
+
     let use_clippy = args.is_present("clippy") || clippy_args.is_some();
 
     if use_clippy && !config.cli_unstable().unstable_options {
@@ -171,7 +167,6 @@ pub fn exec(config: &mut Config, args: &ArgMatches<'_>) -> CliResult {
             allow_no_vcs: args.is_present("allow-no-vcs"),
             allow_staged: args.is_present("allow-staged"),
             broken_code: args.is_present("broken-code"),
-            use_clippy,
             clippy_args,
         },
     )?;

src/cargo/util/config.rs

@@ -1790,6 +1790,6 @@ impl Drop for PackageCacheLock<'_> {
 /// Allows override of the path via `CARGO_CLIPPY_DRIVER` env variable
 pub fn clippy_driver() -> PathBuf {
     env::var("CARGO_CLIPPY_DRIVER")
-        .unwrap_or_else(|_| "clippy_driver".into())
+        .unwrap_or_else(|_| "clippy-driver".into())
         .into()
 }

tests/testsuite/clippy.rs

@@ -1,4 +1,4 @@
-use crate::support::{clippy_is_available, is_nightly, process, project};
+use crate::support::{clippy_is_available, is_nightly, project};
 
 #[cargo_test]
 fn clippy() {

tests/testsuite/fix.rs

@@ -3,7 +3,7 @@ use std::fs::File;
 use git2;
 
 use crate::support::git;
-use crate::support::{basic_manifest, project};
+use crate::support::{basic_manifest, clippy_is_available, is_nightly, project};
 
 use std::io::Write;
 
@@ -1318,8 +1318,17 @@ fn fix_with_clippy() {
 
     p.cargo("fix -Zunstable-options --clippy --allow-no-vcs")
         .masquerade_as_nightly_cargo()
-        .diff_lines("", "", false)
         .with_stderr(stderr)
         .with_stdout("")
         .run();
+
+    assert_eq!(
+        p.read_file("src/lib.rs"),
+        "
+                pub fn foo() {
+                    let mut v = Vec::<String>::new();
+                    let _ = v.iter_mut().filter(|a| a.is_empty());
+                }
+    "
+    );
 }