track the application name used by bash autocomplete

bash.go

@@ -28,6 +28,7 @@ type BashAuto struct {
 	id      int  // should be unique
 	hidden  bool // don't update the toolkits when it's hidden
 	Auto    func([]string)
+	appName string // a good way to track the name of the binary ?
 }
 
 func dumpjunk() {
@@ -51,11 +52,17 @@ func Bash(argname string, autocomplete func([]string)) *BashAuto {
 	arg.Register(&argBash)
 
 	myBash = new(BashAuto)
+	myBash.appName = argname
 
 	// parse go.Arg here?
 	return myBash
 }
 
+// returns the name of the executable registered for shell autocomplete
+func AppName() string {
+	return myBash.appName
+}
+
 // makes a bash autocomplete file for your command
 func doBash(argname string) {
 	fmt.Println(makeBashCompletionText(argname))