From 38e5c6198ed71153d8d3dc77d0ef7d75b19b679a Mon Sep 17 00:00:00 2001
From: Alex Broad <46813168+alex-broad@users.noreply.github.com>
Date: Mon, 27 May 2024 12:02:24 +0100
Subject: [PATCH] Update help example to use vars (#429)

---
 _examples/shell/help/main.go | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/_examples/shell/help/main.go b/_examples/shell/help/main.go
index 56b8ce6..4d1d154 100644
--- a/_examples/shell/help/main.go
+++ b/_examples/shell/help/main.go
@@ -7,14 +7,16 @@ import (
 )
 
 var cli struct {
-	Flag flagWithHelp    `help:"Regular flag help"`
+	Flag flagWithHelp    `help:"${flag_help}"`
 	Echo commandWithHelp `cmd:"" help:"Regular command help"`
 }
 
 type flagWithHelp bool
 
-func (f *flagWithHelp) Help() string {
-	return "🏁 additional flag help"
+// See https://github.com/alecthomas/kong?tab=readme-ov-file#variable-interpolation
+var vars = kong.Vars{
+	"flag_help": "Extended flag help that might be too long for directly " +
+		"including in the struct tag field",
 }
 
 type commandWithHelp struct {
@@ -41,7 +43,8 @@ func main() {
 		kong.ConfigureHelp(kong.HelpOptions{
 			Compact: true,
 			Summary: false,
-		}))
+		}),
+		vars)
 	switch ctx.Command() {
 	case "echo <msg>":
 		fmt.Println(cli.Echo.Msg)