return nil
				}
			}
		}
	}

	var (
		name     string
		idx      = strings.IndexByte(str, ',')
		settings = ParseTagSetting(str, ",")
	)

	// optimize match english letters and midline
	// The following code is basically called in for.
	// In order to avoid the performance problems caused by repeated compilation of regular expressions,
	// it only needs to be done once outside, so optimization is done here.

				"application/x-berkeley-db",
				"application/x-bibtex-text-file",
				"application/x-bittorrent",
				"application/x-bplist",
				"application/x-bzip",
				"application/x-bzip2",
				"application/x-cdlink",
				"application/x-chat",
				"application/x-chess-pgn",
				"application/x-chrome-package",
				"application/x-compress",
				"application/x-corelpresentations",
				"application/x-cpio",

1CD3          ; valid                  ;      ; NV8    # 5.2  VEDIC SIGN NIHSHVASA
1CD4..1CF2    ; valid                                  # 5.2  VEDIC SIGN YAJURVEDIC MIDLINE SVARITA..VEDIC SIGN ARDHAVISARGA
1CF3..1CF6    ; valid                                  # 6.1  VEDIC SIGN ROTATED ARDHAVISARGA..VEDIC SIGN UPADHMANIYA
1CF7          ; valid                                  # 10.0 VEDIC SIGN ATIKRAMA