All, I'm interested to work on the uniq --group feature as described in the following thread: http://lists.gnu.org/archive/html/coreutils/2011-03/msg00000.html
$ printf "1 a\n2 a\n2 b\n3 a\n3 b\n4 a\n" | uniq -w1 --group 1 a 2 a 2 b 3 a 3 b 4 a With this new option, uniq becomes very useful to easily separate block of similar lines in a file. --group would be an addition to modify the default behavior : instead of suppress similar lines, separate block of similar lines. I do not agree with the proposition of using the --group option in conjunction with the -u option or with the -D option for the following reasons: 1. -D, --all-repeated already has the appropriate argument : "separate". 2. -u, --unique could be enhance with the same kind of arguments than --all-repeated. 3. Above all, IMHO, --group option would be an addition to provide a new behavior and not a new way to access an already existing behavior. Maybe, we could consider the --unique=[delimit-method] addition too although it seems less interesting and I do not see any use case. What do you think ? Cheers, Jérémy --- Sent from my Emacs
