GNU bug report logs - #78705
31.0.50; [PATCH] DocView: Opening ODF file fails when it has more than one file extension, or when using unoconv

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Daniel Lopez <daniel.lopez999 <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 31.0.50; [PATCH] DocView: Opening ODF file fails when it has more
 than one file extension, or when using unoconv
Date: Fri, 6 Jun 2025 05:12:12 +0100

[Message part 1 (text/plain, inline)]

Hi,

This is actually 2 seperate problems, but the code to fix them (patch 
below) is closely related so I hope it's okay to write it up like this.

1)
If I try and open a LibreOffice document with a name like 
"hello.odt.~123~" (example attached), the DocView conversion buffer 
appears and a second later the following error occurs:

File is missing: "Renaming", "No such file or directory", 
"/tmp/docview1000/hello.odt.~123~-76506e223cfc94b3909bc6acc92e1426/hello.pdf", 
"/tmp/docview1000/hello.odt.~123~-76506e223cfc94b3909bc6acc92e1426/doc.pdf"

(Practically speaking, this bit me when I tried to open a particular 
revision of a document from a Git repo, using `vc-revision-other-window` 
- as Emacs saves the file with a commit hash on the end of the name like 
so: "hello.odt.~1a1b409~").

The trouble is that when `doc-view-odf->pdf-converter-soffice` runs the 
external program 'soffice' to convert the document to a PDF, soffice can 
only be given an output directory, not a file name; soffice names it 
after the input file with the file extension changed to '.pdf'. But 
soffice considers the file extension to only be the last part ".~123~", 
so creates "hello.odt.pdf", whereas Emacs (via `file-name-base`) cuts 
off ".odt.~123~" and ends up expecting the file "hello.pdf".

2)
Through the customization option `doc-view-odf->pdf-converter-program`, 
Emacs can alternatively use the program 'unoconv' to do the conversion. 
But with this selected I couldn't open any LibreOffice documents, 
regardless of file name. Turns out that when Emacs passes a output 
directory to unoconv it always results in an output file simply called 
".pdf". But as it happens, unoconv does allow you to specify an output 
filename in full.

The patch:
I changed `doc-view-odf->pdf-converter-soffice`, 
`doc-view-odf->pdf-converter-unoconv` and the calling function 
`doc-view-convert-current-doc` to work around or fix both these issues. 
Any renaming is now done within the former two functions to keep the 
quirks of those programs contained.

Daniel



In GNU Emacs 31.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version
3.24.49, cairo version 1.18.4) of 2025-04-01 built on ENO
Repository revision: bdee2481728f57053690f0dd76c943ddd5f343d9
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101016
System Description: Arch Linux

Configured using:
'configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib
--localstatedir=/var --mandir=/usr/share/man --with-gameuser=:games
--with-modules --without-libotf --without-m17n-flt --without-gconf
--with-native-compilation=yes --with-xinput2 --with-x-toolkit=gtk3
--without-xaw3d --with-sound=alsa --with-tree-sitter --without-gpm
--without-compress-install
'--program-transform-name=s/\([ec]tags\)/\1.emacs/'
'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe -fno-plt -fexceptions
-Wp,-D_FORTIFY_SOURCE=3 -Wformat -Werror=format-security
-fstack-clash-protection -fcf-protection -fno-omit-frame-pointer
-mno-omit-leaf-frame-pointer -g
-ffile-prefix-map=/mnt/gear/download/archbuilds/text/emacs-git/src=/usr/src/debug/emacs-git
-flto=auto' 'LDFLAGS=-Wl,-O1 -Wl,--sort-common -Wl,--as-needed
-Wl,-z,relro -Wl,-z,now -Wl,-z,pack-relative-relocs -flto=auto''

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG
LCMS2 LIBSYSTEMD LIBXML2 MODULES NATIVE_COMP NOTIFY INOTIFY PDUMPER PNG
RSVG SECCOMP SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER
WEBP X11 XDBE XIM XINERAMA XINPUT2 XPM XRANDR GTK3 ZLIB

Important settings:
value of $LANG: en_GB.UTF-8
locale-coding-system: utf-8

Major mode: Text

Minor modes in effect:
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company-mode: t
server-mode: t
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volatile-highlights-mode: t
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hides /home/daniel/.emacs.d/externals/multiple-cursors
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hides 
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/home/daniel/.emacs.d/elpa/pkg-info-20150517.1143/pkg-info
/home/daniel/.emacs.d/externals/epl hides 
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/home/daniel/.emacs.d/externals/highlight hides 
/home/daniel/.emacs.d/elpa/highlight-20161103.1410/highlight
/home/daniel/.emacs.d/elpa/lispy-20230314.1738/elpa hides 
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/home/daniel/.emacs.d/elpa/lv-20200507.1518/lv hides 
/home/daniel/.emacs.d/elpa/hydra-20181030.1925/lv
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/home/daniel/.emacs.d/elpa/ivy-20230714.751/elpa
/home/daniel/.emacs.d/externals/cmake-mode hides 
/usr/share/emacs/site-lisp/cmake-mode
/home/daniel/.emacs.d/elpa/transient-20250418.2149/transient hides 
/usr/share/emacs/31.0.50/lisp/transient
/home/daniel/.emacs.d/dan/asm-mode hides 
/usr/share/emacs/31.0.50/lisp/progmodes/asm-mode
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/usr/share/emacs/31.0.50/lisp/progmodes/csharp-mode
/home/daniel/.emacs.d/externals/peg hides 
/usr/share/emacs/31.0.50/lisp/progmodes/peg
/home/daniel/.emacs.d/dan/re-builder hides 
/usr/share/emacs/31.0.50/lisp/emacs-lisp/re-builder

Features:
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cl-preloaded button loaddefs theme-loaddefs faces cus-face macroexp
files window text-properties overlay sha1 md5 base64 format env
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threads dbusbind inotify lcms2 dynamic-setting system-font-setting
font-render-setting cairo gtk x-toolkit xinput2 x multi-tty move-toolbar
make-network-process tty-child-frames native-compile emacs)

Memory information:
((conses 16 1146743 300078) (symbols 48 63070 77)
(strings 32 326478 27387) (string-bytes 1 13536281) (vectors 16 90479)
(vector-slots 8 1878066 144783) (floats 8 460 2152)
(intervals 56 61868 3838) (buffers 992 83))

[hello.odt.~123~ (application/octet-stream, attachment)]

[Fix-opening-of-ODF-files.patch (text/x-patch, attachment)]

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