support a version subcommand too, fix behavior on no args

pkg/commands/cli.go

@@ -6,24 +6,14 @@ import (
 	"github.com/alecthomas/kong"
 )
 
-// version string will be injected by automation
-var version string = "unknown"
-
 type CLI struct {
 	Ls            LsCmd            `cmd:"" aliases:"list" help:"List types, fields, or directives in a GraphQL SDL document."`
 	Json          JsonCmd          `cmd:"" help:"Return a JSON representation of a GraphQL SDL document."`
 	Introspection IntrospectionCmd `cmd:"" help:"Interact with a GraphQL introspection endpoint over HTTP."`
 	Viz           VizCmd           `cmd:"" help:"Visualize a GraphQL schema using GraphViz."`
 	Merge         MergeCmd         `cmd:"" help:"Merge multiple GraphQL SDL documents into a single one."`
-	Version       versionFlag      `help:"Print version and exit."`
-}
-
-type versionFlag bool
-
-func (f versionFlag) BeforeReset(ctx *kong.Context) error {
-	_, _ = ctx.Stdout.Write([]byte(version + "\n"))
-	ctx.Kong.Exit(0)
-	return nil
+	VersionFlag   versionFlag      `name:"version" help:"Print version and exit."`
+	Version       VersionCmd       `cmd:"" help:"Print the version of gquil and exit."`
 }
 
 func MakeParser(opts ...kong.Option) (*kong.Kong, error) {
@@ -47,7 +37,7 @@ func massageArgs(args []string) []string {
 	args = args[1:]
 
 	if len(args) == 0 {
-		return []string{args[0], "--help"}
+		return []string{"--help"}
 	}
 
 	if args[0] == "help" {