I'm finding that when I call org-agenda-filter-by-tag, the string of character hints is long, with lots of duplicates. E.g.,
Filter by tag [hpcwhpcwhpcwhpcwhpcwhpcwhpcwhpcwhpcwhpcw ]:tag-char, [TAB]:tag, [/]:off, [+/-]:filter/exclude, [q]:quit [3 times] A git bisect reveals that this bug began with commit 2056b60aae528d0ba663d8b3804dc69e98993f1c. After a bit of investigating, I've found the cause: org--tag-add-to-alist no longer removes duplicate tags if they belong in a tag group. Let me provide a minimal example to illustrate. Take the following setting: (setq org-tag-alist '((:startgroup) ("home" . ?h) ("phone" . ?p) ("computer" . ?c) ("work" . ?w) (:endgroup))) If one has 10 agenda files (none of which has a local #+TAGS declaration), org-tag-alist-for-agenda will end up containing those tags multiple times: --8<---------------cut here---------------start------------->8--- org-tag-alist-for-agenda is a variable defined in ‘org.el’. Its value is (#1=(:startgroup) #2=("home" . 104) #3=("phone" . 112) #4=("computer" . 99) #5=("work" . 119) #6=(:endgroup) #1# #2# #3# #4# #5# #6# #1# #2# #3# #4# #5# #6# #1# #2# #3# #4# #5# #6# #1# #2# #3# #4# #5# #6# #1# #2# #3# #4# #5# #6# #1# #2# #3# #4# #5# #6# #1# #2# #3# #4# #5# #6# #1# #2# #3# #4# #5# #6# #1# #2# #3# #4# #5# #6#) --8<---------------cut here---------------end--------------->8--- As a result, the help prompt for org-filter-tags-for-agenda looks like this (notice the duplicate characters): Filter by tag [hpcwhpcwhpcwhpcwhpcwhpcwhpcwhpcwhpcwhpcw ]:tag-char, [TAB]:tag, [/]:off, [+/-]:filter/exclude, [q]:quit [3 times] Best, Matt