1

What is the easiest way to detect if one has used an \includegraphics{*.eps} in a tex document?

(motivation: When I have used this I would like to not use pdflatex and instead use the combination of latex and dvipdfm (I will take care of these).)

2

I think nowadays one should drop the extension for image files completely and do only \includegraphics{<file-name-sans-extension>}. The used engine will pick up the right file acc. to the extensions described in \Gin@extensions in .def files provided by LaTeX support for color and graphics. If you use C-c C-c within AUCTeX, you can control the engine with Options for TeX Processors described in the manual.


A general approach to parse the argument of \includegraphics over possible master and child files would be to use the built-in parser in AUCTeX. I suggest to write a style file for this purpose which can look like this:

;;; includegraphics-parser.el --- Dummy AUCTeX style to parse argument
;;; of \includegraphics

;;; Code:

;; Needed for auto-parsing.
(require 'tex)

(TeX-auto-add-type "includegraphics-parser" "LaTeX")

(defvar LaTeX-includegraphics-parser-regexp
  '("\\\\includegraphics\\*?\\(?:\\[[^]]*\\]\\)?{\\([^}]+\\)}"
    1 LaTeX-auto-includegraphics-parser)
  "Matches the mandatory argument of \\includegraphics.")

(defun LaTeX-includegraphics-parser-auto-prepare ()
  "Clear `LaTeX-auto-includegraphics-parser' before parsing."
  (setq LaTeX-auto-includegraphics-parser nil))

(defun LaTeX-includegraphics-parser-auto-cleanup ()
  "Search for \"eps\" in parsed arguments of \\includegraphics."
  (when (string-match "\\.eps"
              (mapconcat #'car (LaTeX-includegraphics-parser-list) "|"))
    (message "Found eps file extension")
    (sit-for 2)))

(add-hook 'TeX-auto-prepare-hook #'LaTeX-includegraphics-parser-auto-prepare t)
(add-hook 'TeX-auto-cleanup-hook #'LaTeX-includegraphics-parser-auto-cleanup t)
(add-hook 'TeX-update-style-hook #'TeX-auto-parse t)

(TeX-add-style-hook
 "includegraphics-parser"
 (lambda ()
   ;; Make sure graphicx.el is loaded
   (TeX-run-style-hooks "graphicx")

   ;; Hook into AUCTeX parser
   (TeX-auto-add-regexp LaTeX-includegraphics-parser-regexp))
 LaTeX-dialect)

;;; includegraphics-parser.el ends here

Set the variable TeX-style-private to a directory of your choice, e.g.:

(setq TeX-style-private "~/.emacs.d/mystyles")

and save includegraphics-parser.el there.

Customize TeX-parse-self to t and restart Emacs.

Put something like this in your .tex file

\iffalse
\usepackage{includegraphics-parser}
\fi

and hit C-c C-n to reparse your file.

  • Thanks, but this does not answer the original question. A solution could be a regexp searching \\includegraphics{[^}]*\.eps. I asked my question to know if there is a better solution. – Name Jan 7 '18 at 13:51
  • @Name - Your question was "what is the easiest way". Using a regexp doesn't fit the bill ;-) See my updated answer. – Arash Esbati Jan 8 '18 at 21:07

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