cliedit

var RootCmd = &cobra.Command{
	Use:    "edit [file]",
	Short:  "Terminal text editor (femto)",
	Long:   "Embedded terminal text editor with syntax highlighting (Ctrl+S save, Ctrl+Q quit)",
	Hidden: true,
	Args:   cobra.MaximumNArgs(1),
	Run: func(_ *cobra.Command, args []string) {
		var filename string
		var content string

		if len(args) == 1 {
			filename = args[0]
			data, err := os.ReadFile(filename)
			if err != nil {
				if !os.IsNotExist(err) {
					fmt.Fprintf(os.Stderr, "edit: %v\n", err)
					os.Exit(1)
				}

				content = ""
			} else {
				content = string(data)
			}
		} else {
			filename = "untitled"
			content = ""
		}

		buffer := femto.NewBufferFromString(content, filename)
		view := femto.NewView(buffer)

		if cs := loadColorscheme(); cs != nil {
			view.SetColorscheme(cs)
		}

		app := tview.NewApplication()
		view.SetInputCapture(func(event *tcell.EventKey) *tcell.EventKey {
			switch {
			case event.Key() == tcell.KeyCtrlQ:
				app.Stop()
				return nil
			case event.Key() == tcell.KeyCtrlS:
				if err := saveFile(filename, view); err != nil {
					fmt.Fprintf(os.Stderr, "\nedit: save error: %v\n", err)
				}
				return nil
			}
			return event
		})

		app.SetRoot(view, true)
		if err := app.Run(); err != nil {
			fmt.Fprintf(os.Stderr, "edit: %v\n", err)
			os.Exit(1)
		}
	},
}