how to send multi msg in a cmd

[seth-shi]

this is my code

func requestApi() tea.cmd {
   return func() tea.msg {
       res, err := http.get()
       return tea.MsgBatch(err, msg)
   }
}

why this design, because i have a global error handler (show err msg), when api request fail, show error, meanwhile unblock api request

[seth-shi]

this is code

## github.com\charmbracelet\[email protected]\tea.go
case sequenceMsg:
	go func() {
		// Execute commands one at a time, in order.
		for _, cmd := range msg {
			if cmd == nil {
				continue
			}

			msg := cmd()
                        // 1. why msg is cmds ? i think return BatchMsg cause confusion, should for msg p.Send(msg), not p.Send(cmd())
			if batchMsg, ok := msg.(BatchMsg); ok {
				g, _ := errgroup.WithContext(p.ctx)
				for _, cmd := range batchMsg {
					cmd := cmd
					g.Go(func() error {
						p.Send(cmd())
						return nil
					})
				}

				//nolint:errcheck,gosec
				g.Wait() // wait for all commands from batch msg to finish
				continue
			}

                       // 2. this can add break msg, example: http middleware return
                       if _, ok := cmd.(BreakMsg); ok {
                              break
                        }

			p.Send(msg)
		}
	}()