src/cli/command.rs: print_bash_completion - avoid crash

src/cli/command.rs

@@ -574,12 +574,13 @@ pub fn print_bash_completion(def: &CommandLineInterface) {
         Err(_) => return,
     };
 
-
     let mut args = match shellwords::split(&cmdline) {
         Ok(v) => v,
         Err(_) => return,
     };
 
+    if args.len() == 0 { return; }
+
     args.remove(0); //no need for program name
 
     if cmdline.ends_with(char::is_whitespace) {