Emacs org mode: how can I filter on tags and todo status simultaneously?

Question

I am using org mode's agenda function (keyboard short cut: C-c a ) in order to make different sorted views of all my tasks. I do this by defining the variable org-agenda-custom-commands. If I have the following code in my init file:

(setq org-agenda-custom-commands'( ("p" "Projects" tags "PROJECT") ))

I can filter out tasks with the tag "PROJECT" by using the shortcut C-c a p. Likewise I can use the code:

(setq org-agenda-custom-commands'( ("t" "tasks to be done" tags-todo "TODO=\"TODO\" ") ))

to filter out task with todo status equal to TODO by using the shortcut C-c a t. My question is, how can I define org-aganda-custom-commands to filter out tasks with todo status equal to TODO AND with a tag equal to PROJECT ?

Thanks in advance : )

Answer 1

The tag search view is poorly named. It actually searches tags and properties. tag-todo adds an extra condition that only matches todo headlines. Use "+" to indicated that a condition is required (and "-" that it's forbidden). So +PROJECT+TODO=\"TODO\" will match headlines with the tag :PROJECT: and a todo keyword of TODO. Putting into a custom command looks like

(setq org-agenda-custom-commands
      '(("p" "List Non-done projects"
          tags "+PROJECT+TODO=\"TODO\"")))