Merge pull request #13261 from marckhouzam/feat/activeHelpNoComp

ActiveHelp for cmds that don't take any more args

cmd/helm/completion.go

@@ -102,7 +102,7 @@ func newCompletionCmd(out io.Writer) *cobra.Command {
 		Short:             "generate autocompletion script for bash",
 		Long:              bashCompDesc,
 		Args:              require.NoArgs,
-		ValidArgsFunction: noCompletions,
+		ValidArgsFunction: noMoreArgsCompFunc,
 		RunE: func(cmd *cobra.Command, _ []string) error {
 			return runCompletionBash(out, cmd)
 		},
@@ -114,7 +114,7 @@ func newCompletionCmd(out io.Writer) *cobra.Command {
 		Short:             "generate autocompletion script for zsh",
 		Long:              zshCompDesc,
 		Args:              require.NoArgs,
-		ValidArgsFunction: noCompletions,
+		ValidArgsFunction: noMoreArgsCompFunc,
 		RunE: func(cmd *cobra.Command, _ []string) error {
 			return runCompletionZsh(out, cmd)
 		},
@@ -126,7 +126,7 @@ func newCompletionCmd(out io.Writer) *cobra.Command {
 		Short:             "generate autocompletion script for fish",
 		Long:              fishCompDesc,
 		Args:              require.NoArgs,
-		ValidArgsFunction: noCompletions,
+		ValidArgsFunction: noMoreArgsCompFunc,
 		RunE: func(cmd *cobra.Command, _ []string) error {
 			return runCompletionFish(out, cmd)
 		},
@@ -138,7 +138,7 @@ func newCompletionCmd(out io.Writer) *cobra.Command {
 		Short:             "generate autocompletion script for powershell",
 		Long:              powershellCompDesc,
 		Args:              require.NoArgs,
-		ValidArgsFunction: noCompletions,
+		ValidArgsFunction: noMoreArgsCompFunc,
 		RunE: func(cmd *cobra.Command, _ []string) error {
 			return runCompletionPowershell(out, cmd)
 		},
@@ -209,7 +209,15 @@ func runCompletionPowershell(out io.Writer, cmd *cobra.Command) error {
 	return cmd.Root().GenPowerShellCompletionWithDesc(out)
 }
 
-// Function to disable file completion
+// noMoreArgsCompFunc deactivates file completion when doing argument shell completion.
-func noCompletions(_ *cobra.Command, _ []string, _ string) ([]string, cobra.ShellCompDirective) {
+// It also provides some ActiveHelp to indicate no more arguments are accepted.
-	return nil, cobra.ShellCompDirectiveNoFileComp
+func noMoreArgsCompFunc(_ *cobra.Command, _ []string, _ string) ([]string, cobra.ShellCompDirective) {
+	return noMoreArgsComp()
+}
+
+// noMoreArgsComp deactivates file completion when doing argument shell completion.
+// It also provides some ActiveHelp to indicate no more arguments are accepted.
+func noMoreArgsComp() ([]string, cobra.ShellCompDirective) {
+	activeHelpMsg := "This command does not take any more arguments (but may accept flags)."
+	return cobra.AppendActiveHelp(nil, activeHelpMsg), cobra.ShellCompDirectiveNoFileComp
 }

cmd/helm/create.go

@@ -71,7 +71,7 @@ func newCreateCmd(out io.Writer) *cobra.Command {
 				return nil, cobra.ShellCompDirectiveDefault
 			}
 			// No more completions, so disable file completion
-			return nil, cobra.ShellCompDirectiveNoFileComp
+			return noMoreArgsComp()
 		},
 		RunE: func(_ *cobra.Command, args []string) error {
 			o.name = args[0]

cmd/helm/docs.go

@@ -58,7 +58,7 @@ func newDocsCmd(out io.Writer) *cobra.Command {
 		Long:              docsDesc,
 		Hidden:            true,
 		Args:              require.NoArgs,
-		ValidArgsFunction: noCompletions,
+		ValidArgsFunction: noMoreArgsCompFunc,
 		RunE: func(cmd *cobra.Command, _ []string) error {
 			o.topCmd = cmd.Root()
 			return o.run(out)

cmd/helm/env.go

@@ -42,7 +42,7 @@ func newEnvCmd(out io.Writer) *cobra.Command {
 				return keys, cobra.ShellCompDirectiveNoFileComp
 			}
 
-			return nil, cobra.ShellCompDirectiveNoFileComp
+			return noMoreArgsComp()
 		},
 		Run: func(_ *cobra.Command, args []string) {
 			envVars := settings.EnvVars()

cmd/helm/get_all.go

@@ -43,7 +43,7 @@ func newGetAllCmd(cfg *action.Configuration, out io.Writer) *cobra.Command {
 		Args:  require.ExactArgs(1),
 		ValidArgsFunction: func(_ *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
 			if len(args) != 0 {
-				return nil, cobra.ShellCompDirectiveNoFileComp
+				return noMoreArgsComp()
 			}
 			return compListReleases(toComplete, args, cfg)
 		},

cmd/helm/get_hooks.go

@@ -43,7 +43,7 @@ func newGetHooksCmd(cfg *action.Configuration, out io.Writer) *cobra.Command {
 		Args:  require.ExactArgs(1),
 		ValidArgsFunction: func(_ *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
 			if len(args) != 0 {
-				return nil, cobra.ShellCompDirectiveNoFileComp
+				return noMoreArgsComp()
 			}
 			return compListReleases(toComplete, args, cfg)
 		},

cmd/helm/get_manifest.go

@@ -45,7 +45,7 @@ func newGetManifestCmd(cfg *action.Configuration, out io.Writer) *cobra.Command
 		Args:  require.ExactArgs(1),
 		ValidArgsFunction: func(_ *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
 			if len(args) != 0 {
-				return nil, cobra.ShellCompDirectiveNoFileComp
+				return noMoreArgsComp()
 			}
 			return compListReleases(toComplete, args, cfg)
 		},

cmd/helm/get_metadata.go

@@ -42,7 +42,7 @@ func newGetMetadataCmd(cfg *action.Configuration, out io.Writer) *cobra.Command
 		Args:  require.ExactArgs(1),
 		ValidArgsFunction: func(_ *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
 			if len(args) != 0 {
-				return nil, cobra.ShellCompDirectiveNoFileComp
+				return noMoreArgsComp()
 			}
 			return compListReleases(toComplete, args, cfg)
 		},

cmd/helm/get_notes.go

@@ -41,7 +41,7 @@ func newGetNotesCmd(cfg *action.Configuration, out io.Writer) *cobra.Command {
 		Args:  require.ExactArgs(1),
 		ValidArgsFunction: func(_ *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
 			if len(args) != 0 {
-				return nil, cobra.ShellCompDirectiveNoFileComp
+				return noMoreArgsComp()
 			}
 			return compListReleases(toComplete, args, cfg)
 		},

cmd/helm/get_values.go

@@ -48,7 +48,7 @@ func newGetValuesCmd(cfg *action.Configuration, out io.Writer) *cobra.Command {
 		Args:  require.ExactArgs(1),
 		ValidArgsFunction: func(_ *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
 			if len(args) != 0 {
-				return nil, cobra.ShellCompDirectiveNoFileComp
+				return noMoreArgsComp()
 			}
 			return compListReleases(toComplete, args, cfg)
 		},

cmd/helm/history.go

@@ -62,7 +62,7 @@ func newHistoryCmd(cfg *action.Configuration, out io.Writer) *cobra.Command {
 		Args:    require.ExactArgs(1),
 		ValidArgsFunction: func(_ *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
 			if len(args) != 0 {
-				return nil, cobra.ShellCompDirectiveNoFileComp
+				return noMoreArgsComp()
 			}
 			return compListReleases(toComplete, args, cfg)
 		},

cmd/helm/list.go

@@ -68,7 +68,7 @@ func newListCmd(cfg *action.Configuration, out io.Writer) *cobra.Command {
 		Long:              listHelp,
 		Aliases:           []string{"ls"},
 		Args:              require.NoArgs,
-		ValidArgsFunction: noCompletions,
+		ValidArgsFunction: noMoreArgsCompFunc,
 		RunE: func(cmd *cobra.Command, _ []string) error {
 			if client.AllNamespaces {
 				if err := cfg.Init(settings.RESTClientGetter(), "", os.Getenv("HELM_DRIVER"), debug); err != nil {

cmd/helm/plugin_install.go

@@ -50,7 +50,7 @@ func newPluginInstallCmd(out io.Writer) *cobra.Command {
 				return nil, cobra.ShellCompDirectiveDefault
 			}
 			// No more completion once the plugin path has been specified
-			return nil, cobra.ShellCompDirectiveNoFileComp
+			return noMoreArgsComp()
 		},
 		PreRunE: func(_ *cobra.Command, args []string) error {
 			return o.complete(args)

cmd/helm/plugin_list.go

@@ -30,7 +30,7 @@ func newPluginListCmd(out io.Writer) *cobra.Command {
 		Use:               "list",
 		Aliases:           []string{"ls"},
 		Short:             "list installed Helm plugins",
-		ValidArgsFunction: noCompletions,
+		ValidArgsFunction: noMoreArgsCompFunc,
 		RunE: func(_ *cobra.Command, _ []string) error {
 			debug("pluginDirs: %s", settings.PluginsDirectory)
 			plugins, err := plugin.FindPlugins(settings.PluginsDirectory)

cmd/helm/push.go

@@ -65,7 +65,7 @@ func newPushCmd(cfg *action.Configuration, out io.Writer) *cobra.Command {
 				}
 				return comps, cobra.ShellCompDirectiveNoFileComp | cobra.ShellCompDirectiveNoSpace
 			}
-			return nil, cobra.ShellCompDirectiveNoFileComp
+			return noMoreArgsComp()
 		},
 		RunE: func(_ *cobra.Command, args []string) error {
 			registryClient, err := newRegistryClient(o.certFile, o.keyFile, o.caFile, o.insecureSkipTLSverify, o.plainHTTP)

cmd/helm/registry_login.go

@@ -53,7 +53,7 @@ func newRegistryLoginCmd(cfg *action.Configuration, out io.Writer) *cobra.Comman
 		Short:             "login to a registry",
 		Long:              registryLoginDesc,
 		Args:              require.MinimumNArgs(1),
-		ValidArgsFunction: noCompletions,
+		ValidArgsFunction: cobra.NoFileCompletions,
 		RunE: func(_ *cobra.Command, args []string) error {
 			hostname := args[0]
 

cmd/helm/registry_logout.go

@@ -35,7 +35,7 @@ func newRegistryLogoutCmd(cfg *action.Configuration, out io.Writer) *cobra.Comma
 		Short:             "logout from a registry",
 		Long:              registryLogoutDesc,
 		Args:              require.MinimumNArgs(1),
-		ValidArgsFunction: noCompletions,
+		ValidArgsFunction: cobra.NoFileCompletions,
 		RunE: func(_ *cobra.Command, args []string) error {
 			hostname := args[0]
 			return action.NewRegistryLogout(cfg).Run(out, hostname)

cmd/helm/release_testing.go

@@ -50,7 +50,7 @@ func newReleaseTestCmd(cfg *action.Configuration, out io.Writer) *cobra.Command
 		Args:  require.ExactArgs(1),
 		ValidArgsFunction: func(_ *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
 			if len(args) != 0 {
-				return nil, cobra.ShellCompDirectiveNoFileComp
+				return noMoreArgsComp()
 			}
 			return compListReleases(toComplete, args, cfg)
 		},

cmd/helm/repo_add.go

@@ -68,10 +68,15 @@ func newRepoAddCmd(out io.Writer) *cobra.Command {
 	o := &repoAddOptions{}
 
 	cmd := &cobra.Command{
-		Use:               "add [NAME] [URL]",
+		Use:   "add [NAME] [URL]",
-		Short:             "add a chart repository",
+		Short: "add a chart repository",
-		Args:              require.ExactArgs(2),
+		Args:  require.ExactArgs(2),
-		ValidArgsFunction: noCompletions,
+		ValidArgsFunction: func(_ *cobra.Command, args []string, _ string) ([]string, cobra.ShellCompDirective) {
+			if len(args) > 1 {
+				return noMoreArgsComp()
+			}
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		},
 		RunE: func(_ *cobra.Command, args []string) error {
 			o.name = args[0]
 			o.url = args[1]

cmd/helm/repo_index.go

@@ -60,7 +60,7 @@ func newRepoIndexCmd(out io.Writer) *cobra.Command {
 				return nil, cobra.ShellCompDirectiveDefault
 			}
 			// No more completions, so disable file completion
-			return nil, cobra.ShellCompDirectiveNoFileComp
+			return noMoreArgsComp()
 		},
 		RunE: func(_ *cobra.Command, args []string) error {
 			o.dir = args[0]

cmd/helm/repo_list.go

@@ -36,7 +36,7 @@ func newRepoListCmd(out io.Writer) *cobra.Command {
 		Aliases:           []string{"ls"},
 		Short:             "list chart repositories",
 		Args:              require.NoArgs,
-		ValidArgsFunction: noCompletions,
+		ValidArgsFunction: noMoreArgsCompFunc,
 		RunE: func(_ *cobra.Command, _ []string) error {
 			f, _ := repo.LoadFile(settings.RepositoryConfig)
 			if len(f.Repositories) == 0 && !(outfmt == output.JSON || outfmt == output.YAML) {

cmd/helm/rollback.go

@@ -55,7 +55,7 @@ func newRollbackCmd(cfg *action.Configuration, out io.Writer) *cobra.Command {
 				return compListRevisions(toComplete, cfg, args[0])
 			}
 
-			return nil, cobra.ShellCompDirectiveNoFileComp
+			return noMoreArgsComp()
 		},
 		RunE: func(_ *cobra.Command, args []string) error {
 			if len(args) > 1 {

cmd/helm/show.go

@@ -60,18 +60,17 @@ func newShowCmd(cfg *action.Configuration, out io.Writer) *cobra.Command {
 	client := action.NewShowWithConfig(action.ShowAll, cfg)
 
 	showCommand := &cobra.Command{
-		Use:               "show",
+		Use:     "show",
-		Short:             "show information of a chart",
+		Short:   "show information of a chart",
-		Aliases:           []string{"inspect"},
+		Aliases: []string{"inspect"},
-		Long:              showDesc,
+		Long:    showDesc,
-		Args:              require.NoArgs,
+		Args:    require.NoArgs,
-		ValidArgsFunction: noCompletions, // Disable file completion
 	}
 
 	// Function providing dynamic auto-completion
 	validArgsFunc := func(_ *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
 		if len(args) != 0 {
-			return nil, cobra.ShellCompDirectiveNoFileComp
+			return noMoreArgsComp()
 		}
 		return compListCharts(toComplete, true)
 	}

cmd/helm/status.go

@@ -60,7 +60,7 @@ func newStatusCmd(cfg *action.Configuration, out io.Writer) *cobra.Command {
 		Args:  require.ExactArgs(1),
 		ValidArgsFunction: func(_ *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
 			if len(args) != 0 {
-				return nil, cobra.ShellCompDirectiveNoFileComp
+				return noMoreArgsComp()
 			}
 			return compListReleases(toComplete, args, cfg)
 		},

cmd/helm/testdata/output/empty_nofile_comp.txt

@@ -1,2 +1,3 @@
+_activeHelp_ This command does not take any more arguments (but may accept flags).
 :4
 Completion ended with directive: ShellCompDirectiveNoFileComp

cmd/helm/testdata/output/rollback-wrong-args-comp.txt

@@ -1,2 +1,3 @@
+_activeHelp_ This command does not take any more arguments (but may accept flags).
 :4
 Completion ended with directive: ShellCompDirectiveNoFileComp

cmd/helm/testdata/output/status-wrong-args-comp.txt

@@ -1,2 +1,3 @@
+_activeHelp_ This command does not take any more arguments (but may accept flags).
 :4
 Completion ended with directive: ShellCompDirectiveNoFileComp

cmd/helm/upgrade.go

@@ -97,7 +97,7 @@ func newUpgradeCmd(cfg *action.Configuration, out io.Writer) *cobra.Command {
 			if len(args) == 1 {
 				return compListCharts(toComplete, true)
 			}
-			return nil, cobra.ShellCompDirectiveNoFileComp
+			return noMoreArgsComp()
 		},
 		RunE: func(_ *cobra.Command, args []string) error {
 			client.Namespace = settings.Namespace()

cmd/helm/verify.go

@@ -50,7 +50,7 @@ func newVerifyCmd(out io.Writer) *cobra.Command {
 				return nil, cobra.ShellCompDirectiveDefault
 			}
 			// No more completions, so disable file completion
-			return nil, cobra.ShellCompDirectiveNoFileComp
+			return noMoreArgsComp()
 		},
 		RunE: func(_ *cobra.Command, args []string) error {
 			err := client.Run(args[0])

cmd/helm/version.go

@@ -65,7 +65,7 @@ func newVersionCmd(out io.Writer) *cobra.Command {
 		Short:             "print the client version information",
 		Long:              versionDesc,
 		Args:              require.NoArgs,
-		ValidArgsFunction: noCompletions,
+		ValidArgsFunction: noMoreArgsCompFunc,
 		RunE: func(_ *cobra.Command, _ []string) error {
 			return o.run(out)
 		},