Upstream update: * Noteworthy changes in release 2.9 (2010-02-11) [stable] ** New features New diff option --suppress-blank-empty. Bring back support for `diff -NUM', where NUM is a number, even when conforming to POSIX 1003.1-2001. This change reverts to the behavior of GNU diff 2.7 and earlier. This is a change only when conforming to POSIX 1003.1-2001; there is no effect when conforming to older POSIX versions. This change is in response to decisions taken in the January 2005 Austin Group standardization meeting. For more details, please see "Utility Syntax Guidelines" in the Minutes of the January 2005 Meeting <http://www.opengroup.org/austin/docs/austin_239.html>. sdiff now understands '1' and '2' as synonyms for 'l' and 'r'. ** Changes in behavior sdiff and diff3 now invoke diff, not $(bindir)/diff ** Administrivia New discussion and bug-reporting address: bug-diffutils@gnu.org updated gnulib support Signoff both, Allan