SwiftClient parse exception on '%' symbols

I've tested this using org.jclouds:jclouds-allblobstore v1.5.5 and 1.6.2-incubating. I get a parse exception using the SwiftClient when object names contain a '%' symbol.
For example an object whose name is 'AND_-_100%_TVX/test.txt' will get stored fine, but when I attempt to list the contents of the container that the object is in I get the following exception:

Sep 10, 2013 10:26:40 AM org.jclouds.logging.jdk.JDKLogger logError
SEVERE: Error parsing input
java.lang.IllegalArgumentException: URLDecoder: Illegal hex characters in escape (%) pattern - For input string: "_T"
at java.net.URLDecoder.decode(URLDecoder.java:192)
at org.jclouds.util.Strings2.urlDecode(Strings2.java:97)
at org.jclouds.http.Uris$UriBuilder.appendPath(Uris.java:157)
at org.jclouds.openstack.swift.functions.ParseObjectInfoListFromJsonResponse$3.apply(ParseObjectInfoListFromJsonResponse.java:82)
at org.jclouds.openstack.swift.functions.ParseObjectInfoListFromJsonResponse$3.apply(ParseObjectInfoListFromJsonResponse.java:80)
at com.google.common.collect.Iterators$9.transform(Iterators.java:893)
at com.google.common.collect.TransformedIterator.next(TransformedIterator.java:48)
at com.google.common.collect.Sets.newTreeSet(Sets.java:345)
at org.jclouds.openstack.swift.functions.ParseObjectInfoListFromJsonResponse.apply(ParseObjectInfoListFromJsonResponse.java:79)
at org.jclouds.openstack.swift.functions.ParseObjectInfoListFromJsonResponse.apply(ParseObjectInfoListFromJsonResponse.java:54)
at org.jclouds.http.functions.ParseJson.apply(ParseJson.java:66)
at org.jclouds.http.functions.ParseJson.apply(ParseJson.java:46)
at com.google.common.util.concurrent.Futures$3.apply(Futures.java:376)
at com.google.common.util.concurrent.Futures$ChainingListenableFuture.run(Futures.java:518)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)

This may affect more than just the SwiftClient API since it looks like the bug may be in:
org.jclouds.util.Strings2.urlDecode
org.jclouds.http.Uris$UriBuilder.appendPath

Here is an example of a simple method that generates the exception:

private PageSet<ObjectInfo> listObjects(String containerName,
String prefix,
int maxResults,
String marker) {
ListContainerOptions containerOptions = ListContainerOptions.Builder.maxResults(maxResults);
if(marker != null) containerOptions.afterMarker(marker);
if(prefix != null) containerOptions.withPrefix(prefix);
return swiftClient.listObjects(containerName, containerOptions);
}

Calling this method with the container name of the container containing the object whose name contains a '%' symbol and a maxResults of 1000 and null for both prefix and marker will result in the above exception.
Let's just say my container name is "percent-container" and I have an object in this container with the name "AND_-_100%_TVX/test.txt"

So this is what the method call to the above method might look like:
listObjects("percent-container", null, 1000, null);

Even if I URL encode the object name before storing it I still get the same exception when retrieving a list of contents for the space.
I can run a cURL command straight to the Swift storage provider to get the object and it returns fine.
Am I doing anything wrong? Do I need to handle '%' symbols in a special way? The docs swift docs don't express any character restrictions on object names: http://docs.openstack.org/trunk/openstack-object-storage/admin/content/containers-and-objects.html