Merge pull request #11953 from markusthoemmes/help-default

Display help text on empty subcommand by default

cmd/podman/validate/args.go

@@ -27,7 +27,8 @@ func SubCommandExists(cmd *cobra.Command, args []string) error {
 		}
 		return errors.Errorf("unrecognized command `%[1]s %[2]s`\n\nDid you mean this?\n\t%[3]s\n\nTry '%[1]s --help' for more information.", cmd.CommandPath(), args[0], strings.Join(suggestions, "\n\t"))
 	}
-	return errors.Errorf("missing command '%[1]s COMMAND'\nTry '%[1]s --help' for more information.", cmd.CommandPath())
+	cmd.Help()
+	return errors.Errorf("missing command '%[1]s COMMAND'", cmd.CommandPath())
 }
 
 // IDOrLatestArgs used to validate a nameOrId was provided or the "--latest" flag

test/system/001-basic.bats

@@ -120,9 +120,7 @@ function setup() {
     fi
 
     run_podman 125 --remote
-    is "$output" "Error: missing command 'podman COMMAND'
-Try 'podman --help' for more information." \
-       "podman --remote show usage message without running endpoint"
+    is "$output" ".*Usage:" "podman --remote show usage message without running endpoint"
 }
 
 # This is for development only; it's intended to make sure our timeout

test/system/015-help.bats

@@ -149,12 +149,12 @@ function check_help() {
         count=$(expr $count + 1)
     done
 
-    # Any command that takes subcommands, must throw error if called
+    # Any command that takes subcommands, prints its help and errors if called
     # without one.
     dprint "podman $@"
     run_podman '?' "$@"
     is "$status" 125 "'podman $*' without any subcommand - exit status"
-    is "$output" "Error: missing command .*$@ COMMAND" \
+    is "$output" ".*Usage:.*Error: missing command '.*$@ COMMAND'" \
        "'podman $*' without any subcommand - expected error message"
 
     # Assume that 'NoSuchCommand' is not a command