bug#72242: 31.0.50; [PATCH] Fix DocView with DVI files

[Manuel Giraud via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

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Hi,

As for Postscript files in Bug#72193, for DVI, DocView produces PNG
content into SVG pages.  The patch is different from Bug#72193 because
since DVI are translated into PDF in a first stage, we can then use
`doc-view-pdf->png-converter-function' that will create SVG as needed
(if supported).

This patch is to be applied on the emacs-30 branch.


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From 2a9e7305a86b8ed53a06988d54d99600f6d80309 Mon Sep 17 00:00:00 2001
From: Manuel Giraud <manuel@ledu-giraud.fr>
Date: Mon, 22 Jul 2024 13:25:49 +0200
Subject: [PATCH] Fix DocView with DVI files

* lisp/doc-view.el (doc-view-pdf/ps->png): Use
`doc-view-pdf->png-converter-function' for DVI too since they
are converted to PDF ealier.
---
 lisp/doc-view.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/doc-view.el b/lisp/doc-view.el
index 65ac6e00768..e7d7ed4a862 100644
--- a/lisp/doc-view.el
+++ b/lisp/doc-view.el
@@ -1328,7 +1328,7 @@ doc-view-pdf/ps->png
   "Convert PDF-PS to PNG asynchronously."
   (funcall
    (pcase doc-view-doc-type
-     ((or 'pdf 'odf 'epub 'cbz 'fb2 'xps 'oxps)
+     ((or 'pdf 'odf 'epub 'cbz 'fb2 'xps 'oxps 'dvi)
       doc-view-pdf->png-converter-function)
      ('djvu #'doc-view-djvu->tiff-converter-ddjvu)
      (_ #'doc-view-ps->png-converter-ghostscript))
-- 
2.45.2


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In GNU Emacs 31.0.50 (build 27, x86_64-unknown-openbsd7.5) of 2024-07-22
 built on computer
Repository revision: 03d83f95c9a6502bf6b85d0b14e47022cf29bd3d
Repository branch: mgi/doc-view
Windowing system distributor 'The X.Org Foundation', version 11.0.12101013
System Description: OpenBSD computer 7.5 GENERIC.MP#198 amd64

Configured using:
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-- 
Manuel Giraud