Differentiate between omitted and empty default.

Fixes #250.
2021-12-13 19:03:23 +11:00
parent 9c9b8ab50b
commit 7533b11d06
6 changed files with 19 additions and 8 deletions
@@ -319,7 +319,7 @@ func (k *Kong) applyHookToDefaultFlags(ctx *Context, node *Node, name string) er
 		}
 		binds := k.bindings.clone().add(ctx).add(node.Vars().CloneWith(k.vars))
 		for _, flag := range node.Flags {
-			if flag.Default == "" || ctx.values[flag.Value].IsValid() || !flag.Target.IsValid() {
+			if !flag.HasDefault || ctx.values[flag.Value].IsValid() || !flag.Target.IsValid() {
 				continue
 			}
 			method := getMethod(flag.Target, name)