Minor tweaks

command.go

@@ -163,7 +163,7 @@ func (cmd *Command) ParseAndRun(ctx context.Context, args []string, options ...O
 }
 
 // GetSelected returns the terminal command selected during the parse phase, or
-// nil if the command hasn't been parsed.
+// nil if the command hasn't been successfully parsed.
 func (cmd *Command) GetSelected() *Command {
 	if cmd.selected == nil {
 		return nil

errors.go

@@ -6,9 +6,8 @@ import (
 )
 
 var (
-	// ErrHelp should be returned by the parse method of flag sets, when the
-	// provided args indicate the user has requested help. Usually this means
-	// -h or --help was one of the args.
+	// ErrHelp should be returned by flag sets during parse, when the provided
+	// args indicate the user has requested help.
 	ErrHelp = flag.ErrHelp
 
 	// ErrDuplicateFlag should be returned by flag sets when the user tries to
@@ -24,10 +23,10 @@ var (
 	// again.
 	ErrAlreadyParsed = errors.New("already parsed")
 
-	// ErrNoExec is returned when a command without an exec function is run.
-	ErrNoExec = errors.New("no exec function")
-
 	// ErrUnknownFlag should be returned by flag sets methods to indicate that a
-	// specific or user-requested flag could not be found.
+	// specific or user-requested flag was provided but could not be found.
 	ErrUnknownFlag = errors.New("unknown flag")
+
+	// ErrNoExec is returned when a command without an exec function is run.
+	ErrNoExec = errors.New("no exec function")
 )