fix: Keep metavar order when making choices_str

pallets · Oct 3, 2022 · 8b9ae77 · 8b9ae77
1 parent 7feb163
commit 8b9ae77
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/src/click/types.py b/src/click/types.py
@@ -253,9 +253,10 @@ def to_info_dict(self) -> t.Dict[str, t.Any]:
 
     def get_metavar(self, param: "Parameter") -> str:
         if param.param_type_name == "option" and not param.show_choices:
-            choices_str = "|".join(
-                {convert_type(type(choice)).name.upper() for choice in self.choices}
-            )
+            choice_metavars = [
+                convert_type(type(choice)).name.upper() for choice in self.choices
+            ]
+            choices_str = "|".join([*dict.fromkeys(choice_metavars)])
         else:
             choices_str = "|".join([str(i) for i in self.choices])