- whose name ends with .gz, -gz, .z, -z, _z or .Z and which begins with
- the correct magic number with an uncompressed file without the original
- extension. gunzip also recognizes the special extensions .tgz and .taz
- as shorthands for .tar.gz and .tar.Z respectively. When compressing,
- gzip uses the .tgz extension if necessary instead of truncating a file
- with a .tar extension.
+ whose name ends with .gz, -gz, .z, -z, or _z (ignoring case) and which
+ begins with the correct magic number with an uncompressed file without
+ the original extension. gunzip also recognizes the special extensions
+ .tgz and .taz as shorthands for .tar.gz and .tar.Z respectively. When
+ compressing, gzip uses the .tgz extension if necessary instead of trun-
+ cating a file with a .tar extension.