Change MSRV check for manual_pattern_char_comparison only for pattern arrays

Author: AurelienFT

clippy_lints/src/string_patterns.rs

@@ -134,7 +134,7 @@ fn get_char_span<'tcx>(cx: &'_ LateContext<'tcx>, expr: &'tcx Expr<'_>) -> Optio
     }
 }
 
-fn check_manual_pattern_char_comparison(cx: &LateContext<'_>, method_arg: &Expr<'_>) {
+fn check_manual_pattern_char_comparison(cx: &LateContext<'_>, method_arg: &Expr<'_>, msrv: &Msrv) {
     if let ExprKind::Closure(closure) = method_arg.kind
         && let body = cx.tcx.hir().body(closure.body)
         && let Some(PatKind::Binding(_, binding, ..)) = body.params.first().map(|p| p.pat.kind)
@@ -190,6 +190,9 @@ fn check_manual_pattern_char_comparison(cx: &LateContext<'_>, method_arg: &Expr<
         {
             return;
         }
+        if set_char_spans.len() > 1 && !msrv.meets(msrvs::PATTERN_TRAIT_CHAR_ARRAY) {
+            return;
+        }
         span_lint_and_then(
             cx,
             MANUAL_PATTERN_CHAR_COMPARISON,
@@ -232,10 +235,8 @@ impl<'tcx> LateLintPass<'tcx> for StringPatterns {
             && let Some(arg) = args.get(pos)
         {
             check_single_char_pattern_lint(cx, arg);
-            if !self.msrv.meets(msrvs::PATTERN_TRAIT_CHAR_ARRAY) {
-                return;
-            }
-            check_manual_pattern_char_comparison(cx, arg);
+
+            check_manual_pattern_char_comparison(cx, arg, &self.msrv);
         }
     }
 

tests/ui/manual_pattern_char_comparison.fixed

@@ -58,4 +58,4 @@ fn msrv_1_57() {
 fn msrv_1_58() {
     let sentence = "Hello, world!";
     sentence.trim_end_matches(['.', ',', '!', '?']);
-}
+}