commands: Add --printZero to the config command

Will include zero config values (e.g. "", 0, false) in the output and will be more verbose, but useful if you cant to discover all available config options.

commands/config.go

@@ -43,8 +43,9 @@ func newConfigCommand() *configCommand {
 type configCommand struct {
 	r *rootCommand
 
-	format string
-	lang   string
+	format    string
+	lang      string
+	printZero bool
 
 	commands []simplecobra.Commander
 }
@@ -78,7 +79,7 @@ func (c *configCommand) Run(ctx context.Context, cd *simplecobra.Commandeer, arg
 	dec.SetIndent("", "  ")
 	dec.SetEscapeHTML(false)
 
-	if err := dec.Encode(parser.ReplacingJSONMarshaller{Value: config, KeysToLower: true, OmitEmpty: true}); err != nil {
+	if err := dec.Encode(parser.ReplacingJSONMarshaller{Value: config, KeysToLower: true, OmitEmpty: !c.printZero}); err != nil {
 		return err
 	}
 
@@ -115,6 +116,7 @@ func (c *configCommand) Init(cd *simplecobra.Commandeer) error {
 	cmd.Flags().StringVar(&c.format, "format", "toml", "preferred file format (toml, yaml or json)")
 	_ = cmd.RegisterFlagCompletionFunc("format", cobra.FixedCompletions([]string{"toml", "yaml", "json"}, cobra.ShellCompDirectiveNoFileComp))
 	cmd.Flags().StringVar(&c.lang, "lang", "", "the language to display config for. Defaults to the first language defined.")
+	cmd.Flags().BoolVar(&c.printZero, "printZero", false, `include config options with zero values (e.g. false, 0, "") in the output`)
 	_ = cmd.RegisterFlagCompletionFunc("lang", cobra.NoFileCompletions)
 	applyLocalFlagsBuildConfig(cmd, c.r)