org-agenda by tags using
org-agenda-filter-by-tag, tag groups specified in
org-tag-alist show up multiple times.
org-agenda-filter-by-tag uses the variable
org-tag-alist-for-agenda, which is set dynamically based on all available tags in all org buffers (I think). According to
org--tag-add-to-alist, which is used to set
org-tag-alist-for-agenda, duplicate tag groups are not removed, by design. However, this causes groups I have defined in
org-tag-alist to show up as many times as I have org buffers.
Are there any (known) easy ways around this issue, to avoid a very long list of tags when filtering the agenda?