Fix UseLine

Signed-off-by: Daniel Nephin <dnephin@docker.com>

cli/cobra.go

@@ -17,6 +17,7 @@ func SetupRootCommand(rootCmd *cobra.Command) {
 	cobra.AddTemplateFunc("operationSubCommands", operationSubCommands)
 	cobra.AddTemplateFunc("managementSubCommands", managementSubCommands)
 	cobra.AddTemplateFunc("wrappedFlagUsages", wrappedFlagUsages)
+	cobra.AddTemplateFunc("useLine", UseLine)
 
 	rootCmd.SetUsageTemplate(usageTemplate)
 	rootCmd.SetHelpTemplate(helpTemplate)
@@ -97,9 +98,19 @@ func managementSubCommands(cmd *cobra.Command) []*cobra.Command {
 	return cmds
 }
 
+// UseLine returns the usage line for a command. This implementation is different
+// from the default Command.UseLine in that it does not add a `[flags]` to the
+// of the line.
+func UseLine(cmd *cobra.Command) string {
+	if cmd.HasParent() {
+		return cmd.Parent().CommandPath() + " " + cmd.Use
+	}
+	return cmd.Use
+}
+
 var usageTemplate = `Usage:
 
-{{- if not .HasSubCommands}}	{{.UseLine}}{{end}}
+{{- if not .HasSubCommands}}	{{ useLine . }}{{end}}
 {{- if .HasSubCommands}}	{{ .CommandPath}} COMMAND{{end}}
 
 {{ .Short | trim }}

docs/yaml/yaml.go

@@ -8,6 +8,7 @@ import (
 	"sort"
 	"strings"
 
+	"github.com/docker/cli/cli"
 	"github.com/spf13/cobra"
 	"github.com/spf13/pflag"
 	yaml "gopkg.in/yaml.v2"
@@ -92,7 +93,7 @@ func GenYamlCustom(cmd *cobra.Command, w io.Writer) error {
 	}
 
 	if cmd.Runnable() {
-		cliDoc.Usage = cmd.UseLine()
+		cliDoc.Usage = cli.UseLine(cmd)
 	}
 
 	if len(cmd.Example) > 0 {