David Masterson <dsmaster...@gmail.com> writes:

>>> When you have '(:foo bar :baz eet), nothing inside is evaluated because
>>> of the quote. To evaluate expressions selectively, use backquote:
>>>
>>> `(:foo bar:baz ,(concat "foo" "bar"))
> ...
> I spoke too soon -- I'm still getting the same error about expecting a
> string.  You mentioned '`' above, but use ',' in your manual diff.  I
> tried both (along with rx-to-string).  

Check out 
https://www.gnu.org/software/emacs/manual/html_node/elisp/Backquote.html

-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>

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