On Tue, Nov 27, 2012 at 6:17 AM, Trejkaz <trej...@trypticon.org> wrote:
> > Ah, yeah... I should have been clearer on what I meant there. > > If you want to make a filter which relies on data that isn't in the > index, there is no mechanism for invalidation. One example of it is if > you have a filter which essentially constructs a query based on the > contents of a text file (like a word list.) Another example is with > tagging, with the tags stored in an external database. > I don't understand how a filter could become invalid even though the reader has not changed. If this is the case in your design, then you have much bigger problems.