···1313 FormatMarkdown: []string{".md", ".markdown", ".mdown", ".mkdn", ".mkd"},1414}15151616+// ReadmeFilenames contains the list of common README filenames to search for,1717+// in order of preference. Only includes well-supported formats.1818+var ReadmeFilenames = []string{1919+ "README.md", "readme.md",2020+ "README",2121+ "readme",2222+ "README.markdown",2323+ "readme.markdown",2424+ "README.txt",2525+ "readme.txt",2626+}2727+1628func GetFormat(filename string) Format {1729 for format, extensions := range FileTypes {1830 for _, extension := range extensions {