I found that I needed to wrap it in (eval-after-load "tex" '(progn
And that it still didn't seem to detect the correct engine.
I came up with:
(eval-after-load "tex"
'(progn
(add-to-list 'TeX-expand-list
'("%(-PDF)"
(lambda ()
(if (string-match "TeX-engine: luatex" (buffer-string))
"-pdflatex=lualatex -pdf" "-pdf"))))
(add-to-list 'TeX-command-list
'("Latexmk" "latexmk %(-PDF) -synctex=1 %s"
TeX-run-TeX nil t
:help "Run Latexmk on file to build everything."))
(setq TeX-command-default "Latexmk")
))
Which works for my purposes (correctly uses the lualatex engine when I
have %%% TeX-engine: luatex in my headers, and otherwise uses the
pdflatex engine --- though it should probably be
expanded to handle xetex and "plain" dvi generation.
> Date: Wed, 24 Oct 2012 22:07:28 +0200
> From: Ivan Andrus <[email protected]>
> To: Benjamin Slade <[email protected]>
> Cc: [email protected]
> Subject: Re: [AUCTeX] auctex Digest, Vol 92, Issue 16
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset=us-ascii
>
> Oops. Sorry, that's from my .emacs:
>
> (defun alist-set (alist-symbol key value &optional search-cdr)
> "e.g. (alist-set 'interpreter-mode-alist 'perl-mode 'cperl-mode t)"
> (let ((cons-cell (if search-cdr
> (rassoc key (symbol-value alist-symbol))
> (assoc key (symbol-value alist-symbol)))))
> (if cons-cell
> (if search-cdr
> (setcar cons-cell key)
> (setcdr cons-cell value))
> (set alist-symbol (cons (cons key value)
> (symbol-value alist-symbol))))))
>
> However, it's probably just easier to use add-to-list if you
> don't need to overwrite values. Namely:
>
> (add-to-list 'TeX-expand-list
> '("%(-PDF)"
> (lambda ()
> (if (and (not TeX-Omega-mode)
> (or TeX-PDF-mode TeX-DVI-via-PDFTeX))
> "-pdf" "-dvi"))))
>
> (add-to-list 'TeX-command-list
> '("Latexmk" "latexmk %(-PDF) %s"
> TeX-run-TeX nil t
> :help "Run Latexmk on file to build everything."))
>
> -Ivan
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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