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. > All of the above would suggest to me that the `~S` is superfluous, and > that, for example, the following two commands would produce identical > results: > > % 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" -- Don Armstrong http://www.donarmstrong.com Cheop's Law: Nothing ever gets built on schedule or within budget. -- Robert Heinlein _Time Enough For Love_ p242 -- 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/20150213232142.gl6...@rzlab.ucr.edu
