else file

    private
    fun maybeRelativize(file: File): File =
        if (!file.isAbsolute) file else File(GFileUtils.relativePathOf(file, rootDirectory))

    private
    fun wildcardsToRegexPatternString(pathWithWildcards: String): String {
        fun String.runIfNotEmpty(action: String.() -> String): String =
            if (this.isEmpty()) this else action()