PCmanFM replaces " " (space) with "%20" when cutting and pasting files on SMB shares

[Jens]

Running Lubuntu 14.04.

To reproduce:

Mount some SMB share (in my case, a WD Mybooklive Linux based NAS).
Select some files with spaces in their names, press CTRL+X (to cut these).
Navigate to some other folder on this share.
Press CTRL-V.

The files will be pasted there but their names will be mangled (space replaced with "%20").

This replacement should not happen.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: pcmanfm 1.2.0-1
ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
Config_pcmanfm_System_Lubuntu: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden: '/etc/xdg/pcmanfm/Lubuntu/lubuntu.conf'
CurrentDesktop: LXDE
Date: Sat May 31 22:58:13 2014
InstallationDate: Installed on 2014-05-12 (19 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64+mac (20140417)
SourcePackage: pcmanfm
Udisks_dump: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden: 'udisks'
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jens (jens-launchpad-net)]

This also happens when copying FROM a SMB share to e.g. a MTP device. These seem quite common operations and spaces in file names are quite common too. Is nobody interested in this bug? Or is more information needed?

[Jens (jens-launchpad-net)]

Upstream reports this is fixed in libfm-1.2.1. Since this is quite a serious bug (affects daily usage), could an update for Trusty be considered?

Reference: https://sourceforge.net/p/pcmanfm/bugs/897