jka-compr-compression-info-list--internal

jka-compr-compression-info-list--internal is a variable defined in `jka-cmpr-hook.el'.
Its value is shown below.

Documentation:
Stored value of `jka-compr-compression-info-list'.
If Auto Compression mode is enabled, this is the value of
`jka-compr-compression-info-list' when `jka-compr-install' was last called.
Otherwise, it is nil.

Value:

(["\\.Z\\'" "compressing" "compress"
  ("-c")
  "uncompressing" "gzip"
  ("-c" "-q" "-d")
  nil t "\235"]
 ["\\.bz2\\'" "bzip2ing" "bzip2" nil "bunzip2ing" "bzip2"
  ("-d")
  nil t "BZh"]
 ["\\.tbz2?\\'" "bzip2ing" "bzip2" nil "bunzip2ing" "bzip2"
  ("-d")
  nil nil "BZh"]
 ["\\.\\(?:tgz\\|svgz\\|sifz\\)\\'" "compressing" "gzip"
  ("-c" "-q")
  "uncompressing" "gzip"
  ("-c" "-q" "-d")
  t nil "\213"]
 ["\\.g?z\\'" "compressing" "gzip"
  ("-c" "-q")
  "uncompressing" "gzip"
  ("-c" "-q" "-d")
  t t "\213"]
 ["\\.lz\\'" "Lzip compressing" "lzip"
  ("-c" "-q")
  "Lzip uncompressing" "lzip"
  ("-c" "-q" "-d")
  t t "LZIP"]
 ["\\.lzma\\'" "LZMA compressing" "lzma"
  ("-c" "-q" "-z")
  "LZMA uncompressing" "lzma"
  ("-c" "-q" "-d")
  t t ""]
 ["\\.xz\\'" "XZ compressing" "xz"
  ("-c" "-q")
  "XZ uncompressing" "xz"
  ("-c" "-q" "-d")
  t t "\3757zXZ"]
 ["\\.txz\\'" "XZ compressing" "xz"
  ("-c" "-q")
  "XZ uncompressing" "xz"
  ("-c" "-q" "-d")
  t nil "\3757zXZ"]
 ["\\.dz\\'" nil nil nil "uncompressing" "gzip"
  ("-c" "-q" "-d")
  nil t "\213"])