func pathPrefix(path []string) string {
	if p := mkPath(path); p != "" {
		return p + ": "
	}
	return ""
}
// pathPrefix returns an error message prefix holding
// the concatenation of the path elements. If path
// starts with a ".", the dot is omitted.
pathPrefix returns an error message prefix holding
the concatenation of the path elements. If path
starts with a ".", the dot is omitted.
// pathPrefix returns an error message prefix holding // the concatenation of the path elements . If path // starts with a " . " the dot is omitted .
func pathPrefix(path []string) string {
	if p := mkPath(path); p != "" {
		return p + ": "
	}
	return ""
}
func pathPrefix ( path [ ] string ) string { if p := mkPath ( path ) ; p != " " { return p + " " } return " " }
pathPrefix returns an error message prefix holding
the concatenation of the path elements.
pathPrefix returns an error message prefix holding the concatenation of the path elements .