fix: return cmdstr in alias resolve instead of nothing

this shouldnt be a problem.. but ... what

aliases.go

@@ -51,6 +51,11 @@ func (a *aliasModule) Resolve(cmdstr string) string {
 	arg, _ := regexp.Compile(`[\\]?%\d+`)
 
 	args, _ := splitInput(cmdstr)
+	if len(args) == 0 {
+		// this shouldnt reach but...????
+		return cmdstr
+	}
+
 	for a.aliases[args[0]] != "" {
 		alias := a.aliases[args[0]]
 		alias = arg.ReplaceAllStringFunc(alias, func(a string) string {