Bastien writes: > I've seen problems with this new function when completing in agendas: > hitting '/' does not see what tags are available for completion in the > current buffer. > > I'm reverting e9b1b8fde5 from master for now. If you see what's wrong, > please resubmit a patch.
Stepping through both versions, it looks like the crucial thing is that org-agenda-get-represented-tags needs to be called _before_ the completion function. If it's not, org-agenda-filter-completion-function calls -get-represented-tags with an unset cache, and it returns nil because the (derived-mode-p 'org-agenda-mode) condition is nil. The same goes for org-agenda-get-represented-categories.
