REST API /rest/auth/1/session fails with HTTP 500 if user names have spaces

2011-11-02 11:35:51,036 http-80-13 ERROR jeff kirby 695x1559x1 1t0z3p3 148.92.245.17 /rest/auth/1/session [jira.rest.exception.ExceptionInterceptor] Returning internal server error in response
java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
...
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Thread.java:619)
Caused by: java.net.URISyntaxException: Illegal character in path at index 47: http://jira.our-company.com/rest/api/latest/user/jeff kirby
	at java.net.URI$Parser.fail(URI.java:2809)
	at java.net.URI$Parser.checkChars(URI.java:2982)
	at java.net.URI$Parser.parseHierarchical(URI.java:3066)
	at java.net.URI$Parser.parse(URI.java:3014)
	at java.net.URI.<init>(URI.java:578)
	at com.atlassian.jira.rest.auth.Login.currentUser(Login.java:76)
	... 142 more