-w option to set wallpaper fails silently when given a relative path

[Silas S. Brown]

When I do:

cd wallpapers
pcmanfm -w pattern.jpg || echo false

nothing happens to the wallpaper, and there is no "false" printed. However, it's OK if I give it the full path:

pcmanfm -w "$(pwd)/pattern.jpg"

but there is nothing in the "pcmanfm --help" text to warn that full path is required.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: pcmanfm 0.9.8+git-6240436419-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
Config_pcmanfm_System_lxde: Error: [Errno 2] No such file or directory: '/etc/xdg/pcmanfm/lxde/pcmanfm.conf'
Date: Tue Jul 5 08:24:31 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
Pref_Config_System_lxde:
 [Preferred Applications]
 WebBrowser=firefox.desktop
 MailClient=
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: pcmanfm
UpgradeStatus: Upgraded to natty on 2011-05-03 (62 days ago)

[Julien Lavergne (gilir)]

Thank you for your bug report. Forwarded upstream.

[Chris Guiver (guiverc)]

Thank you for reporting this bug to Ubuntu.

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[Silas S. Brown (ssb22)]

I re-tested in Lubuntu 20.04.2 LTS and reproduced the
problem on the current LXQt desktop (pcmanfm-qt 0.14.1),
-w works when given an absolute path, while it has no
effect (but no error) if the path is relative. I have
not had the chance to re-test on the non-Qt LXDE desktop
(no longer supported by Lubuntu, but still in Ubuntu 18.04);
pcmanfm 1.3.1-1 does not talk to LXQt. As pcmanfm-qt still
has the bug, I wouldn't be surprised if pcmanfm does too,
but in absence of other tests, I wonder if this bug should
now be moved to the pcmanfm-qt package (at low priority).