Hi,

It would be very helpful to be able to search not only for tasks with a specific tag, but also for tasks without a specific tag. The reason is that it is very difficult to discover a task that lacks a tag it should have had. Say, for example, that I tag all my tasks with an area of responsibility (work, private, school, sports club). In a view with very many tasks (e.g. Next), I may want to filter on one of these tags. However, if I have forgotten to tag a task with its appropriate are of responsibility, I will not see it in the appropriate filtered view. However, it will not necessarily show up in the "Untagged" view because it may have other tags (e.g. the name of a client).

If I could search for all tasks without a given tag (e.g. work), I could quickly look through the results to see if any work tasks were include and re-tag those tasks.

In addition it would be possible to create filters such as "all @computer tasks that are not &work".

For the latter purpose it might be useful to be able to do the same for (at least) projects, contexts and priorities as well.

Best regards,
Tom