Making more messes with parser config

argh/cmd/argh-example/main.go

@@ -0,0 +1,46 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"os"
+
+	"git.meatballhat.com/x/box-o-sand/argh"
+	"github.com/davecgh/go-spew/spew"
+)
+
+func main() {
+	asJSON := os.Getenv("ARGH_OUTPUT_JSON") == "enabled"
+
+	log.SetFlags(0)
+
+	pt, err := argh.ParseArgs(os.Args, argh.NewParserConfig(
+		&argh.CommandConfig{
+			NValue:     argh.OneOrMoreValue,
+			ValueNames: []string{"topping"},
+			Flags: &argh.Flags{
+				Automatic: true,
+			},
+		},
+		nil,
+	))
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	ast := argh.NewQuerier(pt.Nodes).AST()
+
+	if asJSON {
+		b, err := json.MarshalIndent(ast, "", "  ")
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		fmt.Println(string(b))
+
+		return
+	}
+
+	spew.Dump(ast)
+}