Hi,

When I run (org-set-tags t t) to realign all tags in the buffer, it
doesn't work unless the point is currently on a headline, because
org-set-tags calls (org-get-tags-string) early on, and
org-get-tags-string raises an error if not on a headline. This can be
fixed by moving the binding of `current' to `(org-get-tags-string)'
into the else clause of the first if statment. I have attached a patch

-Ryan
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