Setting MUpdf as default viewer in AUCTeX

Question

How can I set MUPDF as the default viewer in AUCTeX (I mean setting it in the variable Tex-view-program-selection)?

Many thanks

Answer 1

Here is (I think) the simplest way to do this. The first adds mupdf as a new view program, while the second specifies it as the default for pdfs.

(with-eval-after-load "tex"
  (add-to-list 'TeX-view-program-list '("mupdf" "/path/to/mupdf %o"))
  (setcdr (assq 'output-pdf TeX-view-program-selection) '("mupdf")))

Adding basic synctex support

In response to a comment, here is how to add support for synctex with mupdf. This only makes mupdf jump to the correct page with C-c C-v. I believe doing more like inverse search requires some ugly hacks.

(with-eval-after-load "tex"
  ;; enable synctex support for latex-mode
  (add-hook 'LaTeX-mode-hook 'TeX-source-correlate-mode)
  ;; add a new view program
  (add-to-list 'TeX-view-program-list
        '(;; arbitrary name for this view program
          "my mupdf"
          (;; mupdf command (may need an absolute path)
           "mupdf"
           ;; %o expands to the name of the output file
           " %o"
           ;; insert page number if TeX-source-correlate-mode
           ;; is enabled
           (mode-io-correlate " %(outpage)")))
  ;; use the view command named "my mupdf" for pdf output
  (setcdr (assq 'output-pdf TeX-view-program-selection) '("my mupdf"))