Subject: bug#24042: mudraw doesn't exist any more

From: Stefan Monnier <[email-masked]>
Date: Wed, 20 Jul 2016 17:24:17 -0400

Package: Emacs
Version: 25.1.50

Apparently mudraw has been superseded by "mutool draw".  I'm using the
patch below to accommodate this new situation, but it's not
quite satisfactory.

        Stefan

diff --git a/lisp/doc-view.el b/lisp/doc-view.el
index e16d453..d16b2f5 100644
--- a/lisp/doc-view.el
+++ b/lisp/doc-view.el
@@ -164,6 +164,8 @@ doc-view-ghostscript-program
 (defcustom doc-view-pdfdraw-program
   (cond
    ((executable-find "pdfdraw") "pdfdraw")
+   ((executable-find "mudraw") "mudraw")
+   ((executable-find "mutool") "mutool")
    (t "mudraw"))
   "Name of MuPDF's program to convert PDF files to PNG."
   :type 'file
@@ -1028,7 +1030,10 @@ doc-view-djvu->tiff-converter-ddjvu
 (defun doc-view-pdf->png-converter-mupdf (pdf png page callback)
   (doc-view-start-process
    "pdf->png" doc-view-pdfdraw-program
-   `(,(concat "-o" png)
+   ;; FIXME: Ugly hack: recent mupdf distribution replaced "mudraw" with
+   ;; "mutool draw".
+   `(,@(if (string-match "mutool[^/\\]*$" doc-view-pdfdraw-program) '("draw"))
+     ,(concat "-o" png)
      ,(format "-r%d" (round doc-view-resolution))
      ,pdf
      ,@(if page `(,(format "%d" page))))