On Fri, Feb 13, 2015 at 6:21 PM, Don Armstrong <d...@debian.org> wrote: > On Fri, 13 Feb 2015, Kynn Jones wrote: >> The [documentation][1] for `~S` says: >> > ?narrow(filter, pattern), ~S filter pattern >> > >> > This term “narrows” the search to package versions matching >> > filter. In particular, it matches any package version which >> > matches both filter and pattern. The string value of the match is >> > the string value of pattern. >> >> I have not been able to find any definition in this documentation of >> what it means by the term "filter", and how this term differs from the >> term "pattern". Therefore, it looks like the paragraph above is, >> strictly speaking, meaningless. > > The critical bit that you're missing from this paragraph is "versions". > > See > http://algebraicthunk.net/~dburrows/projects/aptitude/doc/en/ch02s03s03.html > for details.
That was indeed illuminating. Thank you! (Unfortunately, it says nothing about "filters", let alone how they differ from "patterns".) >> % aptitude search '~i!~Astable' > > This means "installed packages which are not in stable at all". > >> % aptitude search '~S~i!~Astable' > > This means "installed package where the same version is not available in > stable" OK, that's crystal clear and extremely helpful. Thank you very much! kj -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/cafvqaj7-iwrsnqkurccwfzxdwsnz0jevmqr-yztkp+fvet9...@mail.gmail.com
