Use reflect-compatible struct tags in examples

_examples/server/console.go

@@ -12,10 +12,10 @@ var _ = kong.Must(&grammar{})
 
 // Server interface.
 type grammar struct {
-	Help     helpCmd `cmd help:"Show help."`
-	Question helpCmd `cmd hidden name:"?" help:"Show help."`
+	Help     helpCmd `cmd:"" help:"Show help."`
+	Question helpCmd `cmd:"" hidden:"" name:"?" help:"Show help."`
 
-	Status statusCmd `cmd help:"Show server status."`
+	Status statusCmd `cmd:"" help:"Show server status."`
 }
 
 type statusCmd struct {
@@ -28,7 +28,7 @@ func (s *statusCmd) Run(ctx *kong.Context) error {
 }
 
 type helpCmd struct {
-	Command []string `arg optional help:"Show help on command."`
+	Command []string `arg:"" optional:"" help:"Show help on command."`
 }
 
 // Run shows help.

_examples/server/main.go

@@ -18,17 +18,12 @@ import (
 	"github.com/alecthomas/kong"
 )
 
-type context struct {
-	kong *kong.Context
-	rl   *readline.Instance
-}
-
 // Handle a single SSH interactive connection.
 func handle(log *log.Logger, s ssh.Session) error {
 	log.Printf("New SSH")
 	sshPty, _, isPty := s.Pty()
 	if !isPty {
-		return errors.New("No PTY requested")
+		return errors.New("no PTY requested")
 	}
 	log.Printf("Using TERM=%s width=%d height=%d", sshPty.Term, sshPty.Window.Width, sshPty.Window.Height)
 	cpty, tty, err := pty.Open()