https://bugs.kde.org/show_bug.cgi?id=419144
Bug ID: 419144
Summary: kde-open5 fails to open custom mimetypes when
~/.local/share/mime/application is a symlink
Product: kde-cli-tools
Version: 5.12.8
Platform: Ubuntu Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: aleix...@kde.org
Reporter: nathanielmbea...@gmail.com
Target Milestone: ---
Created attachment 126968
--> https://bugs.kde.org/attachment.cgi?id=126968&action=edit
Files to replicate the bug.
SUMMARY
kde-open5 fails with custom mimetypes when ~/.local/share/mime/application is a
symbolic link pointing to the directory containing the mimeinfo files
STEPS TO REPRODUCE
Github repo for this purpose:
https://github.com/nbeaver/kde-custom-mimetype-bug
A zip file with the necessary files is also attached.
Manual steps for completeness:
$ cat fcyzqrpw.desktop
[Desktop Entry]
Version=1.0
Type=Application
Name=FCYZQRPW handler
Comment=Handles FCYZQRPW files
TryExec=xedit
Exec=xedit %F
MimeType=application/x-fcyzqrpw
$ cat x-fcyzqrpw.xml
<?xml version="1.0" encoding="UTF-8"?>
<mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info";>
<mime-type type="application/x-fcyzqrpw">
<comment>FCYZQRPW file</comment>
<glob pattern="*.fcyzqrpw"/>
</mime-type>
</mime-info>
$ cat example.fcyzqrpw
This is an example fcyzqrpw file.
Commands to install mimetype, symlink the directory, and open the example file:
xdg-mime install --mode user x-fcyzqrpw.xml
desktop-file-install --dir=~/.local/share/applications/ fcyzqrpw.desktop
chmod +x ~/.local/share/applications/fcyzqrpw.desktop
xdg-mime default fcyzqrpw.desktop application/x-fcyzqrpw
update-desktop-database ~/.local/share/applications
update-mime-database ~/.local/share/mime
mv ~/.local/share/mime/application ~/.local/share/mime/application.real
ln -s -r ~/.local/share/mime/application.real
~/.local/share/mime/application
kde-open5 example.fcyzqrpw
OBSERVED RESULT
kde-open5 shows a "Choose Application - KIO Client" window and can't save any
persistent default application.
EXPECTED RESULT
kde-open5 opens the example file in xedit
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Linux onyx 5.3.0-40-generic #32~18.04.1-Ubuntu SMP Mon Feb 3
14:05:59 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
(available in About System)
KDE Plasma Version: 5.12.9
KDE Frameworks Version: 5.44.0
Qt Version: 5.9.5
ADDITIONAL INFORMATION
The example given is intentionally artificial, but this applies to any custom
mimetype. I first noticed it when trying to open Mathematica notebooks in
Dolphin.
It may seem unusual that ~/.local/share/mime/application is a symbolic link,
but this is common for symlink configuration managers such as GNU stow.
https://www.gnu.org/software/stow/
The workaround is simply to dereference the symlink and make
~/.local/share/mime/application and parent directories not be a symlink (i.e.
don't use GNU stow).
Note that other candidates for xdg-open such as gio and exo-open do not suffer
from this bug.
This might ultimately be a bug in frameworks-kio or frameworks-kservice, but
I'm reporting this to kde-cli-tools since it can be be replicated with
kde-open5. (It can also be replicated with Dolphin.)
$ kde-open5 --version
kioclient 5.12.8
$ apt-cache policy kde-cli-tools libkf5kiocore5 libkf5service5
kde-cli-tools:
Installed: 4:5.12.8-0ubuntu0.1
Candidate: 4:5.12.8-0ubuntu0.1
Version table:
*** 4:5.12.8-0ubuntu0.1 500
500 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe amd64
Packages
100 /var/lib/dpkg/status
4:5.12.4-0ubuntu1 500
500 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
libkf5kiocore5:
Installed: 5.44.0-0ubuntu1
Candidate: 5.44.0-0ubuntu1
Version table:
*** 5.44.0-0ubuntu1 500
500 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
100 /var/lib/dpkg/status
libkf5service5:
Installed: 5.44.0-0ubuntu1
Candidate: 5.44.0-0ubuntu1
Version table:
*** 5.44.0-0ubuntu1 500
500 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
100 /var/lib/dpkg/status
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