go test ?

Makefile

@@ -0,0 +1,21 @@
+all:
+	@echo
+	@echo
+
+clean:
+	rm -f go.*
+
+redomod:
+	rm -f go.*
+	GO111MODULE= go mod init
+	GO111MODULE= go mod tidy
+
+test:
+	go test
+
+vet:
+	@GO111MODULE=off go vet
+	@echo this go binary package builds okay
+
+goimports:
+	goimports -w *.go

go.mod

@@ -1,4 +1,4 @@
-module github.com/alexflint/go-arg
+module go.wit.com/dev/alexflint/arg
 
 require (
 	github.com/alexflint/go-scalar v1.2.0

parse.go

@@ -80,9 +80,26 @@ var ErrVersion = errors.New("version requested by user")
 var mustParseExit = os.Exit
 var mustParseOut io.Writer = os.Stdout
 
+/*
+	This allows you to have common arg values defined in a GO package
+
+	package 'foo'
+	function init() {
+		args.Register(&argsFoo)
+	}
+*/
+
+// This stores the args sent from the GO packages
+var register []interface{}
+
+func Register(dest ...interface{}) {
+	register = append(register, dest...)
+}
+
 // MustParse processes command line arguments and exits upon failure
 func MustParse(dest ...interface{}) *Parser {
-	return mustParse(Config{Exit: mustParseExit, Out: mustParseOut}, dest...)
+	register = append(register, dest...)
+	return mustParse(Config{Exit: mustParseExit, Out: mustParseOut}, register...)
 }
 
 // mustParse is a helper that facilitates testing