Hi,
In my org-mode configuration, I bind globally "M-p" to "org-
agenda" (the default "C-a" is already used of something else). A
problem of that is, I often press "M-p" inside the agenda buffer,
trying to bring up the agenda command dispatch buffer, which
actually changes the priority of a task. I tried to rebind this key
to "org-agenda" by the following in org-agenda-mode-hook:
(define-key org-agenda-mode-map (kbd "M-p") 'org-agenda)
But the above key binding only works when the cursor is on a date
line, not a task line. On a task line, the old "priority-up"
binding is still effective.