ox-koma-letter.el: Set LCO option before other KOMA variables
* ox-koma-letter.el (org-koma-letter-closing): More
business-like closing.
(org-koma-letter-from-address): Do not set default personal
information.
(org-koma-letter-opening): Gendered opening.
(org-koma-letter-phone-number): Do not set default personal
information.
(org-koma-letter-sender): Use `#+SENDER:' instead of
`#+AUTHOR:' because the latter is always set by the LaTeX
exporter.
(org-koma-letter-email): Duplicte `#+EMAIL:' in this exporter
because it is always set by the LaTeX exporter.
(koma-letter): Add additional `#+SENDER:' and `#+EMAIL:' to
exporter (see above).
(org-koma-letter-template): Set LCO before evaluating other
KOMA variables if they are set; add `#+SENDER:' and `#+EMAIL:'
to template (see above).
The LCO file is set loaded first and KOMA variables are only set if
their value is not `nil'.
Example:
#+LCO: Default
#+SIGNATURE: A friend
will result in the following LaTeX code:
#+BEGIN_SRC latex
\LoadLetterOption{Default} % LCO file, with default signature
\setkomavar{signature}{A friend} % Overwrite signature
#+END_SRC
Other KOMA variables defined in the LCO file, e.g., `fromaddress', will
not be overwritten.
Signed-off-by: Alan Schmitt <alan.schmitt@polytechnique.org>