Then, I suggest adding after -c :    -c, --check, --check=diagnose-first  check for sorted input; do not sort >> Note that, when selecting fields with -k while using the -c switch, user should probably also disable the last-resort comparison with -s to obtain the expected result. after -k :    -k, --key=POS1[,POS2]     start a key at POS1 (origin 1), end it at POS2 (default end of line)  >> By default, if two lines are considered equivalent regarding the key specification, sort will try to resolve the equivalence by comparing the whole lines. This is called the "last-resort comparison" (and may be disabled with -s) and after -s :   -s, --stable              stabilize sort by disabling last-resort comparison >> (See -k) ________________________________ De : Eric Blake À : Camion SPAM Cc : "14226-done@debbugs.gnu.org" <14226-done@debbugs.gnu.org> Envoyé le : Samedi 20 avril 2013 17h54 Objet : Re: bug#14226: Sort -c takes in account fields that were outside sorting scope On 04/19/2013 06:56 PM, Camion SPAM wrote: > Well, I'm satisfied with your suggestion of adding -s. > I would just add that this might be something that should be added to the man page. The man page is generated from 'sort --help', and there, we are trying to favor brevity.  But it might indeed be worth adding to the 'info sort' page.  I read that page, and notice that while '-c' and '-C' are mentioned first, details about '-k' and '-s' are several screenfuls away, so it is not obvious that those two options can affect the behavior of -c.  You could help by reading that page, and finding the spot(s) where adding a sentence would have helped you; if you could propose the location and wording to add, then we can work with that to turn it into a formal patch. -- Eric Blake  eblake redhat com    +1-919-301-3266 Libvirt virtualization library http://libvirt.org