Release Notes: A new option "--ignore-trailing-space" ("-Z") was added to diff and sdiff. The options "--new-file" ("-N") and "--unidirectional-new-file" now allow comparisons to "-". The option "--ignore-file-name-case" now applies at the top level as well. File names with special characters are now encoded as double-quoted C string literals in the diff header.
Release Notes: "diff" no longer reports spurious differences merely because two entries in the same directory have names that compare equal in the current locale, or compare equal because "--ignore-file-name-case" was given.
Release Notes: Lack of a newline at the end of file reporting was fixed. When printing preceding "function" lines for a hunk, lines are trimmed in order to avoid truncating the function name. Binary file differences are once again denoted with the word "binary" for clarity.
Release Notes: A new --suppress-blank-empty diff option was added. Support for `diff -NUM' was reintroduced. The sdiff now understands '1' and '2' as synonyms for 'l' and 'r'. There is a change in behavior: sdiff and diff3 now invoke diff, not $(bindir)/diff. gnulib support was updated.
Release Notes: Problems in the build system and some other bugs were fixed.
Release Notes: The programs now support behavior conformant to POSIX 1003.1-2001. Options to diff that accepted regular expressions now conform to the grep syntax rather than the GNU Emacs syntax for regexps. An option to diff3 and sdiff allows you to use other diff utilities than the one that comes with diffutils. cmp supports BSD-style options to specify the bytes to skip at the start of the files. Support was improved for locales other than the `C' (POSIX) locale and for MS-DOS. Support for large files (>2 GB) was added. Man pages are now provided. Some of the diagnostics were reworded so that they are more consistent.