1 files changed, 26 insertions, 0 deletions
diff --git a/clippy_lints/src/methods/mod.rs b/clippy_lints/src/methods/mod.rs
index d7e9f65bfa3..b416d7d5814 100644
--- a/clippy_lints/src/methods/mod.rs
+++ b/clippy_lints/src/methods/mod.rs
@@ -58,6 +58,7 @@ mod manual_inspect;
 mod manual_is_variant_and;
 mod manual_next_back;
 mod manual_ok_or;
+mod manual_repeat_n;
 mod manual_saturating_arithmetic;
 mod manual_str_repeat;
 mod manual_try_fold;
@@ -4339,6 +4340,29 @@ declare_clippy_lint! {
     "using `NonZero::new_unchecked()` in a `const` context"
 }
 
+declare_clippy_lint! {
+    /// ### What it does
+    ///
+    /// Checks for `repeat().take()` that can be replaced with `repeat_n()`.
+    ///
+    /// ### Why is this bad?
+    ///
+    /// Using `repeat_n()` is more concise and clearer. Also, `repeat_n()` is sometimes faster than `repeat().take()` when the type of the element is non-trivial to clone because the original value can be reused for the last `.next()` call rather than always cloning.
+    ///
+    /// ### Example
+    /// ```no_run
+    /// let _ = std::iter::repeat(10).take(3);
+    /// ```
+    /// Use instead:
+    /// ```no_run
+    /// let _ = std::iter::repeat_n(10, 3);
+    /// ```
+    #[clippy::version = "1.86.0"]
+    pub MANUAL_REPEAT_N,
+    style,
+    "detect `repeat().take()` that can be replaced with `repeat_n()`"
+}
+
 pub struct Methods {
     avoid_breaking_exported_api: bool,
     msrv: Msrv,
@@ -4506,6 +4530,7 @@ impl_lint_pass!(Methods => [
     UNNECESSARY_MAP_OR,
     DOUBLE_ENDED_ITERATOR_LAST,
     USELESS_NONZERO_NEW_UNCHECKED,
+    MANUAL_REPEAT_N,
 ]);
 
 /// Extracts a method call name, args, and `Span` of the method name.
@@ -5176,6 +5201,7 @@ impl Methods {
                 ("step_by", [arg]) => iterator_step_by_zero::check(cx, expr, arg),
                 ("take", [arg]) => {
                     iter_out_of_bounds::check_take(cx, expr, recv, arg);
+                    manual_repeat_n::check(cx, expr, recv, arg, &self.msrv);
                     if let Some(("cloned", recv2, [], _span2, _)) = method_call(recv) {
                         iter_overeager_cloned::check(
                             cx,