Archive manager won't accept files with the special character % in the name; won't say that it didn't include them

Binary package hint: file-roller

PROBLEM

If a file or a folder has a % in its name, the "File Roller" archive manager (how is one supposed to refer to it and how does one find out?) will not add it to an archive. Moreover, it will not give any feedback that the file has not been added.

HOW TO REPRODUCE

1. Create a file or folder named "%".
2. Right-click % and select "Compress".

OR

2. Select a number of files and folders, including %.
3. Right-click on these files and folders and select "Compress".

OR

2. Use the archive manager to create a new archive.
3. Click on "Add Files."
4. Select %.

In none of these use cases will % be part of the archive, nor will the archive manager report that it could not be added (for whatever reason). In the second use case, the archive will be created as normal and will include all the other files and folders, but % will not be a part of the archive (nor will there be any feedback to the user indicating that this is the case).

EXPECTED BEHAVIOR

Files and folders with special characters in their names will be compressable using Nautilus' right-click menu. Failing that, the archive manager will (at a minimum) inform the user that it is not possible to compress them.

SPECULATION

There may be other special characters besides % which produce the same results.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: file-roller 2.32.0-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.35-23.41-generic 2.6.35.7
Uname: Linux 2.6.35-23-generic i686
Architecture: i386
Date: Fri Dec 24 05:17:07 2010
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: file-roller