Bug#1029810: dolphin / ark: Error when unpacking RAR archive while unrar is not installed

[piorunz <piorunz@gmx.com>]

Package: dolphin
Version: 4:22.12.1-1
Severity: normal
X-Debbugs-Cc: piorunz@gmx.com

Dear Maintainer,

How to reproduce:
Make sure unrar and unrar-free packages are NOT installed.
Right click on some RAR file, Extract -> Extract archive here

* What was the outcome of this action?
Dolphin will produce error:
"There was an error while extracting ‘path to file.rar’:
Extraction failed. Make sure that enough space is available."

* What outcome did you expect instead?
Dolphin should produce message:
"Extraction failed.
unrar-free is not installed. Please install unrar-free or unrar to decompress
this archive."

Explanation:
This error message "Make sure that enough space is available" is very
confusing, I thought something is wrong with my system. Dolphin / Ark should
let user know it's not space available problem, but lack of decompress addon to
open the archive.

Note: I am reporting this against Dolphin, because all messages are with title
"Dolphin", and error itself also is in red as a warning inside opened folder
window where this error occured. Looks like Dolphin have handling of errors
like this build-in. So I feel Dolphin could handle it better here. If
inappropriate, please move this bug report to Ark.


-- System Information:
Debian Release: bookworm/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.1.0-1-amd64 (SMP w/16 CPU threads; PREEMPT)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages dolphin depends on:
ii  baloo-kf5                 5.101.0-1
ii  kinit                     5.101.0-1
ii  kio                       5.101.0-2
ii  libc6                     2.36-8
ii  libdolphinvcs5            4:22.12.1-1
ii  libkf5activities5         5.101.0-1
ii  libkf5baloo5              5.101.0-1
ii  libkf5baloowidgets5       4:22.12.1-1
ii  libkf5bookmarks5          5.101.0-1
ii  libkf5codecs5             5.101.0-1
ii  libkf5completion5         5.101.0-1
ii  libkf5configcore5         5.101.0-1
ii  libkf5configgui5          5.101.0-1
ii  libkf5configwidgets5      5.101.0-1
ii  libkf5coreaddons5         5.101.0-1
ii  libkf5crash5              5.101.0-1
ii  libkf5dbusaddons5         5.101.0-1
ii  libkf5filemetadata3       5.101.0-3
ii  libkf5i18n5               5.101.0-1+b2
ii  libkf5iconthemes5         5.101.0-1+b2
ii  libkf5itemviews5          5.101.0-1
ii  libkf5jobwidgets5         5.101.0-1
ii  libkf5kcmutils5           5.101.0-1
ii  libkf5kiocore5            5.101.0-2
ii  libkf5kiofilewidgets5     5.101.0-2
ii  libkf5kiogui5             5.101.0-2
ii  libkf5kiowidgets5         5.101.0-2
ii  libkf5newstuff5           5.101.0-1
ii  libkf5newstuffwidgets5    5.101.0-1
ii  libkf5notifications5      5.101.0-1
ii  libkf5parts5              5.101.0-1
ii  libkf5service-bin         5.101.0-1
ii  libkf5service5            5.101.0-1
ii  libkf5solid5              5.101.0-1
ii  libkf5textwidgets5        5.101.0-1
ii  libkf5widgetsaddons5      5.101.0-1
ii  libkf5windowsystem5       5.101.0-2
ii  libkf5xmlgui5             5.101.0-1+b2
ii  libkuserfeedbackcore1     1.2.0-2
ii  libkuserfeedbackwidgets1  1.2.0-2
ii  libpackagekitqt5-1        1.1.0-1
ii  libphonon4qt5-4           4:4.11.1-4
ii  libqt5core5a              5.15.8+dfsg-2
ii  libqt5dbus5               5.15.8+dfsg-2
ii  libqt5gui5                5.15.8+dfsg-2
ii  libqt5widgets5            5.15.8+dfsg-2
ii  libqt5xml5                5.15.8+dfsg-2
ii  libstdc++6                12.2.0-14
ii  phonon4qt5                4:4.11.1-4

Versions of packages dolphin recommends:
ii  ffmpegthumbs              4:22.12.1-1
ii  kdegraphics-thumbnailers  4:22.12.1-1
ii  kimageformat-plugins      5.101.0-2
ii  kio-extras                4:22.12.1-1

Versions of packages dolphin suggests:
pn  dolphin-plugins  <none>

-- no debconf information