The dangers of minimal testing setups is rearing its ugly head. I can confirm that your latest patch does fix the minimal example that I provided. It does not, sadly, fix a similar case where the org-tag-alist variable includes the :startgroup and :endgroup tokens. If you can my most recent steps to reproduce, step 1.3, and add those tokens, the error is "Wrong type argument: stringp, :endgroup"

Thank you for you patience :)

On Saturday, March 31, 2012, Bastien wrote:

Hi Mike,

Mike McLean <mike.mclean@pobox.com> writes:

> Bastien
>
> I can verify that this has fixed the problem with tag completion not
> prompting for all tags. I see that commit
> 647396464d563634b980127673cf61769663407e has added a wrapper
> (append that combines buffer-tags with (mapcar 'car table).
>
> This has, however, exposed a new bug and conflict
> with org-completion-use-ido that I can minimally reproduce below.

This is now fixed, thanks!

--
Bastien