From 0c495e4936b62e3599434bb9938cb5eb4e20ab53 Mon Sep 17 00:00:00 2001
From: Alec Thomas <alec@swapoff.org>
Date: Wed, 26 Feb 2025 14:37:56 +1100
Subject: [PATCH] feat: add IgnoreDefault optional interface

---
 context.go | 7 ++++++-
 help.go    | 6 ++++--
 kong.go    | 2 +-
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/context.go b/context.go
index 7b1d482..dcaf099 100644
--- a/context.go
+++ b/context.go
@@ -550,11 +550,16 @@ func (c *Context) trace(node *Node) (err error) { //nolint: gocyclo
 	return c.maybeSelectDefault(flags, node)
 }
 
+// IgnoreDefault can be implemented by flags that want to be applied before any default commands.
+type IgnoreDefault interface {
+	IgnoreDefault()
+}
+
 // End of the line, check for a default command, but only if we're not displaying help,
 // otherwise we'd only ever display the help for the default command.
 func (c *Context) maybeSelectDefault(flags []*Flag, node *Node) error {
 	for _, flag := range flags {
-		if flag.Name == "help" && flag.Set {
+		if _, ok := flag.Target.Interface().(IgnoreDefault); ok && flag.Set {
 			return nil
 		}
 	}
diff --git a/help.go b/help.go
index 28290f6..8da1555 100644
--- a/help.go
+++ b/help.go
@@ -14,9 +14,11 @@ const (
 )
 
 // Help flag.
-type helpValue bool
+type helpFlag bool
 
-func (h helpValue) BeforeReset(ctx *Context) error {
+func (h helpFlag) IgnoreDefault() {}
+
+func (h helpFlag) BeforeReset(ctx *Context) error {
 	options := ctx.Kong.helpOptions
 	options.Summary = false
 	err := ctx.Kong.help(options, ctx)
diff --git a/kong.go b/kong.go
index b85e145..a5e3d99 100644
--- a/kong.go
+++ b/kong.go
@@ -283,7 +283,7 @@ func (k *Kong) extraFlags() []*Flag {
 	if k.noDefaultHelp {
 		return nil
 	}
-	var helpTarget helpValue
+	var helpTarget helpFlag
 	value := reflect.ValueOf(&helpTarget).Elem()
 	helpFlag := &Flag{
 		Short: 'h',