GNU bug report logs - #24042
mudraw doesn't exist any more

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From: Mark Oteiza <mvoteiza <at> udel.edu>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: Nicolas Petton <nicolas <at> petton.fr>, Tassilo Horn <tsdh <at> gnu.org>, 24042 <at> debbugs.gnu.org
Subject: bug#24042: mudraw doesn't exist any more
Date: Wed, 20 Jul 2016 21:55:17 -0400

Mark Oteiza <mvoteiza <at> udel.edu> writes:

> Stefan Monnier <monnier <at> iro.umontreal.ca> writes:
>
>>>> Apparently mudraw has been superseded by "mutool draw".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.
>>> Why is it not satisfactory?  What choice do we have if `mudraw' has been
>>> replaced?
>>
>> It's the string-match that's not very satisfactory.  If the "mutool"
>> happens to have a name that doesn't match the regexp, or if some other
>> tool (pdfdraw or mudraw) happens to match the regexp things will go wrong.
>
> There should likely be a doc-view-pdfdraw-options.  I remember poking
> net-utils.el recently which has an approach like this.  May not solve
> the problem, but at least it is exposed to the user.

diff --git a/lisp/doc-view.el b/lisp/doc-view.el
index 223565c..e52b078 100644
--- a/lisp/doc-view.el
+++ b/lisp/doc-view.el
@@ -161,10 +161,20 @@ 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
-  :version "24.4")
+  :version "25.1")
+
+(defcustom doc-view-pdfdraw-options
+  (cond
+   ((string-match-p "mutool\\'" doc-view-pdfdraw-program) (list "draw"))
+   (t nil))
+  "A list of options to give to `doc-view-pdfdraw-program'."
+  :type '(repeat string)
+  :version "25.1")
 
 (defcustom doc-view-pdf->png-converter-function
   (if (executable-find doc-view-pdfdraw-program)
@@ -960,7 +970,8 @@ 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)
+   `(,@doc-view-pdfdraw-options
+     ,(concat "-o" png)
      ,(format "-r%d" (round doc-view-resolution))
      ,pdf
      ,@(if page `(,(format "%d" page))))

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