Use rustfmt.toml to skip problematic tests.

Author: Jarcho

clippy_dev/src/fmt.rs

@@ -270,17 +270,16 @@ fn run_rustfmt(update_mode: UpdateMode) {
 
     let args: Vec<_> = WalkDir::new(".")
         .into_iter()
-        .filter_entry(|e|
-        // Skip traversing some of the larger directories.
-        e.path()
-            .as_os_str()
-            .as_encoded_bytes()
-            .get(2..)
-            .is_none_or(|x| x != "target".as_bytes() && x != ".git".as_bytes())
-        && e.path().file_name().is_none_or(|x| x != "skip_rustfmt"))
-        // e.path().file_name().is_none_or(|x| x != "skip_rustfmt"))
+        .filter_entry(|e| {
+            // Skip traversing larger directories
+            e.path()
+                .as_os_str()
+                .as_encoded_bytes()
+                .get(2..)
+                .is_none_or(|x| x != "target".as_bytes() && x != ".git".as_bytes())
+        })
         .filter_map(|e| {
-            let e = e.expect("error reading `tests`");
+            let e = e.expect("error reading `.`");
             e.path()
                 .as_os_str()
                 .as_encoded_bytes()
@@ -299,12 +298,7 @@ fn run_rustfmt(update_mode: UpdateMode) {
             cmd.stdout(Stdio::null())
                 .stdin(Stdio::null())
                 .stderr(Stdio::piped())
-                .args([
-                    "--config",
-                    "show_parse_errors=false",
-                    "--unstable-features",
-                    "--skip-children",
-                ]);
+                .args(["--unstable-features", "--skip-children"]);
             cmd
         },
         args.iter(),

rustfmt.toml

@@ -6,4 +6,8 @@ edition = "2024"
 error_on_line_overflow = true
 imports_granularity = "Module"
 style_edition = "2024"
-ignore = ["tests/ui/crashes/ice-10912.rs"]
+ignore = [
+    "tests/ui/crashes/ice-9405.rs",
+    "tests/ui/crashes/ice-10912.rs",
+    "tests/ui/non_expressive_names_error_recovery.rs",
+]

tests/ui/skip_rustfmt/non_expressive_names_error_recovery.fixed renamed to tests/ui/non_expressive_names_error_recovery.fixed

@@ -1,5 +1,5 @@
 error: expected one of `!`, `(`, `+`, `,`, `::`, `<`, or `>`, found `)`
-  --> tests/ui/skip_rustfmt/non_expressive_names_error_recovery.rs:6:19
+  --> tests/ui/non_expressive_names_error_recovery.rs:6:19
    |
 LL | fn aa(a: Aa<String) {
    |                   ^ expected one of 7 possible tokens