Re: Support for versions of xpdf that require a ":" before the page number

[Erich Ruff]

Hi Eduardo,

before you put the new version on ELPA

could you include my hack for mupdf if not already done?

After checkin for bugs ;-))

so one could use mupdf too

https://mupdf.com/


;; ----------------- er  mupdf ---------------------------------

(defun     find-mupdf-page (fname &optional page &rest rest)
  (find-bgprocess (ee-find-mupdf-page fname page)))
(defvar ee-find-mupdf-page-options '())
(defun  ee-find-mupdf-page (fname &optional page &rest rest)
  `("mupdf"
    ,@ee-find-mupdf-page-options
    ,fname
    ;; ,@(if page `(,(format "--page-label=%d" page)))
    ,@(if page `(,(format " %s" page)))
    ))

(find-code-pdfbackend "mupdf-page")
(code-pdfbackend "mupdf-page")



;; (find-code-pdfbackendalias "mupdf"       "mupdf-page")
(code-pdfbackendalias "mupdf"       "mupdf-page")
;; (find-code-pdfbackendalias "mupdfpage"   "mupdf-page")
(code-pdfbackendalias "mupdfpage"   "mupdf-page")



;; ----------------- er mupdf end -------------------------


On Di 08 Jun 2021 at 17:58, Eduardo Ochs <eduardoochs@gmail.com> wrote:

> Hi Erich,
>
> I found an elegant way to support both the newer and the older
> versions of xpdf. The new code is this, and the new version should be
> in ELPA in a few hours...
>
>   (defvar ee-find-xpdf-colon "")
>   (defun  ee-find-xpdf-colon ()
>     "Return \":\" or \"\" according to the version of xpdf.
>   Some versions of xpdf need a \":\" before the page number -
>   they need be called as \"xpdf foo.pdf :42\" instead of as
>   \"xpdf foo.pdf 42\". In the future this function will try
>   to guess correctly if the \":\" is needed or not, but this
>   version just returns the value of the variable
>   `ee-find-xpdf-colon'.")
>
>   (defvar ee-find-xpdf-page-options '("-fullscreen"))
>   (defun  ee-find-xpdf-page (fname &optional page &rest rest)
>     `("xpdf"
>       ,@ee-find-xpdf-page-options
>       ,fname
>       ,@(if page `(,(format "%s%d" (ee-find-xpdf-colon) page)))
>       ))
>
> You will need to add this to your .emacs:
>
>   ;; Tests:
>   ;; (setq ee-find-xpdf-colon "")
>   ;; (setq ee-find-xpdf-colon ":")
>   ;; (ee-find-xpdf-page "~/Coetzee99.pdf" (+ -110 114))
>   ;;    (find-xpdf-page "~/Coetzee99.pdf" (+ -110 114))
>   ;;
>   (setq ee-find-xpdf-colon ":")
>
> Cheers =),
>   Eduardo