complete

type Completion struct {
	// Advance reports whether the file name prefix can be extended
	// without changing the set of files that match.
	Advance bool

	// Complete reports whether the extended file name uniquely
	// identifies a file (i.e. NMatch == 1).
	Complete bool

	// String holds the extension of the file name prefix.
	//
	// If Advance is false, String is an empty string. Otherwise,
	// String will be set to the extension; that is, the value of
	// String may be appended to the file name prefix by the caller
	// to extend the embryonic file name unambiguously.
	//
	// If Complete is true, String will be suffixed with a blank,
	// or a path separator, depending on whether the resulting file
	// name identifies a plain file or a directory.
	String string

	// NMatch specifies the number of files that matched.
	NMatch int

	// Filename holds the matching filenames. If there is no match
	// (NMatch == 0), it holds the full set of files in the directory.
	// If the file named is a directory, a slash character will be
	// appended to it.
	Filename []string
}