From cf8e1fc319cf5af51bdfacbcf26ad4f026c08bb7 Mon Sep 17 00:00:00 2001
From: Ed Page <eopage@gmail.com>
Date: Thu, 28 Jul 2022 12:35:49 -0500
Subject: [PATCH] fix(derive): Make `Option<Option<T>>` work per occurrence

---
 clap_derive/src/derives/args.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/clap_derive/src/derives/args.rs b/clap_derive/src/derives/args.rs
index 8942678b..73d56f6e 100644
--- a/clap_derive/src/derives/args.rs
+++ b/clap_derive/src/derives/args.rs
@@ -258,8 +258,7 @@ pub fn gen_augment(
 
                     Ty::OptionOption => quote_spanned! { ty.span()=>
                         .value_name(#value_name)
-                        .min_values(0)
-                        .max_values(1)
+                        .number_of_values(0..=1)
                         #value_parser
                         #action
                     },