Merge #1773

1773: style: fix comma placement for valid values when using arg_enum r=pksunkara a=mmatyas



Co-authored-by: Mátyás Mustoha <matyas.mustoha@gmail.com>

src/macros.rs

@@ -332,7 +332,7 @@ macro_rules! arg_enum {
                             $(stringify!($v),)+
                         ];
                         format!("valid values: {}",
-                            v.join(" ,"))
+                            v.join(", "))
                     }),
                 }
             }