4.23. diffutils

Prior to this update, the "-E" option of the sdiff command was not accepted and returned the following error message:

sdiff: invalid option -- E sdiff: Try `sdiff --help' for more information.

This was because the "-E" option was accidentally omitted from the list of accepted options. This update fixes this bug, and the "-E" option works as expected.

When using the cmp command's "-s" option to compare files, incorrect results were returned for special files whose metadata is not accurate, for example files in the proc file system. This update fixes this bug by always reading the content of files whose length is reported as zero bytes.