1 files changed, 60 insertions, 0 deletions
diff --git a/src/tools/rustfmt/tests/target/configs/single_line_let_else_max_width/100.rs b/src/tools/rustfmt/tests/target/configs/single_line_let_else_max_width/100.rs
new file mode 100644
index 000000000..0409124a5
--- /dev/null
+++ b/src/tools/rustfmt/tests/target/configs/single_line_let_else_max_width/100.rs
@@ -0,0 +1,60 @@
+// rustfmt-single_line_let_else_max_width: 100
+
+fn main() {
+    let Some(a) = opt else {};
+
+    let Some(b) = opt else { return };
+
+    let Some(c) = opt else { return };
+
+    let Some(c) = opt else {
+        // a comment should always force the block to be multi-lined
+        return;
+    };
+
+    let Some(c) = opt else {
+        /* a comment should always force the block to be multi-lined */
+        return;
+    };
+
+    let Some(d) = some_very_very_very_very_long_name else { return };
+
+    let Expr::Slice(ast::ExprSlice {
+        lower,
+        upper,
+        step,
+        range: _,
+    }) = slice.as_ref()
+    else {
+        return;
+    };
+
+    let Some((base_place, current)) = self.lower_expr_as_place(current, *base, true)? else {
+        return Ok(None);
+    };
+
+    let Some(doc_attr) = variant
+        .attrs
+        .iter()
+        .find(|attr| attr.path().is_ident("doc"))
+    else {
+        return Err(Error::new(variant.span(), r#"expected a doc comment"#));
+    };
+
+    let Some((base_place, current)) = self.lower_expr_as_place(current, *base, true) else {
+        return Ok(None);
+    };
+
+    let Stmt::Expr(
+        Expr::Call(ExprCall {
+            args: some_args, ..
+        }),
+        _,
+    ) = last_stmt
+    else {
+        return Err(Error::new(
+            last_stmt.span(),
+            "expected last expression to be `Some(match (..) { .. })`",
+        ));
+    };
+}