Consistently refer to the ? operator (#14687)

Matches the `rustc` terminology

changelog: none

clippy_lints/src/methods/mod.rs

@@ -4370,11 +4370,10 @@
 
 declare_clippy_lint! {
     /// ### What it does
-    ///
-    /// Detect functions that end with `Option::and_then` or `Result::and_then`, and suggest using a question mark (`?`) instead.
+    /// Detect functions that end with `Option::and_then` or `Result::and_then`, and suggest using
+    /// the `?` operator instead.
     ///
     /// ### Why is this bad?
-    ///
     /// The `and_then` method is used to chain a computation that returns an `Option` or a `Result`.
     /// This can be replaced with the `?` operator, which is more concise and idiomatic.
     ///

clippy_lints/src/methods/return_and_then.rs

@@ -55,7 +55,6 @@ pub(super) fn check<'tcx>(
         None => &body_snip,
     };
 
-    let msg = "use the question mark operator instead of an `and_then` call";
     let sugg = format!(
         "let {} = {}?;\n{}",
         arg_snip,
@@ -63,5 +62,13 @@ pub(super) fn check<'tcx>(
         reindent_multiline(inner, false, indent_of(cx, expr.span))
     );
 
-    span_lint_and_sugg(cx, RETURN_AND_THEN, expr.span, msg, "try", sugg, applicability);
+    span_lint_and_sugg(
+        cx,
+        RETURN_AND_THEN,
+        expr.span,
+        "use the `?` operator instead of an `and_then` call",
+        "try",
+        sugg,
+        applicability,
+    );
 }

clippy_lints/src/question_mark.rs

@@ -27,10 +27,10 @@
 
 declare_clippy_lint! {
     /// ### What it does
-    /// Checks for expressions that could be replaced by the question mark operator.
+    /// Checks for expressions that could be replaced by the `?` operator.
     ///
     /// ### Why is this bad?
-    /// Question mark usage is more idiomatic.
+    /// Using the `?` operator is shorter and more idiomatic.
     ///
     /// ### Example
     /// ```ignore
@@ -47,7 +47,7 @@
     #[clippy::version = "pre 1.29.0"]
     pub QUESTION_MARK,
     style,
-    "checks for expressions that could be replaced by the question mark operator"
+    "checks for expressions that could be replaced by the `?` operator"
 }
 
 pub struct QuestionMark {
@@ -280,7 +280,7 @@ fn expr_return_none_or_err(
 /// }
 /// ```
 ///
-/// If it matches, it will suggest to use the question mark operator instead
+/// If it matches, it will suggest to use the `?` operator instead
 fn check_is_none_or_err_and_early_return<'tcx>(cx: &LateContext<'tcx>, expr: &Expr<'tcx>) {
     if let Some(higher::If { cond, then, r#else }) = higher::If::hir(expr)
         && !is_else_clause(cx.tcx, expr)

clippy_lints/src/question_mark_used.rs

@@ -7,10 +7,10 @@
 
 declare_clippy_lint! {
     /// ### What it does
-    /// Checks for expressions that use the question mark operator and rejects them.
+    /// Checks for expressions that use the `?` operator and rejects them.
     ///
     /// ### Why restrict this?
-    /// Sometimes code wants to avoid the question mark operator because for instance a local
+    /// Sometimes code wants to avoid the `?` operator because for instance a local
     /// block requires a macro to re-throw errors to attach additional information to the
     /// error.
     ///
@@ -27,7 +27,7 @@
     #[clippy::version = "1.69.0"]
     pub QUESTION_MARK_USED,
     restriction,
-    "complains if the question mark operator is used"
+    "checks if the `?` operator is used"
 }
 
 declare_lint_pass!(QuestionMarkUsed => [QUESTION_MARK_USED]);
@@ -40,15 +40,9 @@ fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
             }
 
             #[expect(clippy::collapsible_span_lint_calls, reason = "rust-clippy#7797")]
-            span_lint_and_then(
-                cx,
-                QUESTION_MARK_USED,
-                expr.span,
-                "question mark operator was used",
-                |diag| {
-                    diag.help("consider using a custom macro or match expression");
-                },
-            );
+            span_lint_and_then(cx, QUESTION_MARK_USED, expr.span, "the `?` operator was used", |diag| {
+                diag.help("consider using a custom macro or match expression");
+            });
         }
     }
 }

clippy_utils/src/lib.rs

@@ -3101,7 +3101,7 @@ pub fn span_find_starting_semi(sm: &SourceMap, span: Span) -> Span {
     sm.span_take_while(span, |&ch| ch == ' ' || ch == ';')
 }
 
-/// Returns whether the given let pattern and else body can be turned into a question mark
+/// Returns whether the given let pattern and else body can be turned into the `?` operator
 ///
 /// For this example:
 /// ```ignore
@@ -3124,8 +3124,7 @@ pub fn span_find_starting_semi(sm: &SourceMap, span: Span) -> Span {
 /// ```
 ///
 /// We output `Some(a)` in the first instance, and `Some(FooBar { a, b })` in the second, because
-/// the question mark operator is applicable here. Callers have to check whether we are in a
-/// constant or not.
+/// the `?` operator is applicable here. Callers have to check whether we are in a constant or not.
 pub fn pat_and_expr_can_be_question_mark<'a, 'hir>(
     cx: &LateContext<'_>,
     pat: &'a Pat<'hir>,

tests/ui/question_mark_used.stderr

@@ -1,4 +1,4 @@
-error: question mark operator was used
+error: the `?` operator was used
   --> tests/ui/question_mark_used.rs:11:5
    |
 LL |     other_function()?;

tests/ui/return_and_then.stderr

@@ -1,4 +1,4 @@
-error: use the question mark operator instead of an `and_then` call
+error: use the `?` operator instead of an `and_then` call
   --> tests/ui/return_and_then.rs:5:9
    |
 LL | /         opt.and_then(|n| {
@@ -20,7 +20,7 @@ LL +         ret += n;
 LL +         if n > 1 { Some(ret) } else { None }
    |
 
-error: use the question mark operator instead of an `and_then` call
+error: use the `?` operator instead of an `and_then` call
   --> tests/ui/return_and_then.rs:14:9
    |
 LL |         opt.and_then(|n| test_opt_block(Some(n)))
@@ -32,7 +32,7 @@ LL ~         let n = opt?;
 LL +         test_opt_block(Some(n))
    |
 
-error: use the question mark operator instead of an `and_then` call
+error: use the `?` operator instead of an `and_then` call
   --> tests/ui/return_and_then.rs:19:9
    |
 LL |         gen_option(1).and_then(|n| test_opt_block(Some(n)))
@@ -44,7 +44,7 @@ LL ~         let n = gen_option(1)?;
 LL +         test_opt_block(Some(n))
    |
 
-error: use the question mark operator instead of an `and_then` call
+error: use the `?` operator instead of an `and_then` call
   --> tests/ui/return_and_then.rs:24:9
    |
 LL |         opt.and_then(|n| if n > 1 { Ok(n + 1) } else { Err(n) })
@@ -56,7 +56,7 @@ LL ~         let n = opt?;
 LL +         if n > 1 { Ok(n + 1) } else { Err(n) }
    |
 
-error: use the question mark operator instead of an `and_then` call
+error: use the `?` operator instead of an `and_then` call
   --> tests/ui/return_and_then.rs:29:9
    |
 LL |         opt.and_then(|n| test_res_block(Ok(n)))
@@ -68,7 +68,7 @@ LL ~         let n = opt?;
 LL +         test_res_block(Ok(n))
    |
 
-error: use the question mark operator instead of an `and_then` call
+error: use the `?` operator instead of an `and_then` call
   --> tests/ui/return_and_then.rs:35:9
    |
 LL |         Some("").and_then(|x| if x.len() > 2 { Some(3) } else { None })
@@ -80,7 +80,7 @@ LL ~         let x = Some("")?;
 LL +         if x.len() > 2 { Some(3) } else { None }
    |
 
-error: use the question mark operator instead of an `and_then` call
+error: use the `?` operator instead of an `and_then` call
   --> tests/ui/return_and_then.rs:41:9
    |
 LL | /         Some(match (vec![1, 2, 3], vec![1, 2, 4]) {