URL query field rejects query fields with symbols in their names, even if URL-escaped

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Go to the Site Configuration screen
2. Type "@sort" in the URL query field
3. Click Add

What is the expected output? What do you see instead?

I expect "@sort" to appear in the list of including query fields.  Instead,
the input box turns yellow.  "@sort" is one of the many parameters used by
Roundup, the Python issue tracker.  Thinking that the at-symbol might be a
problem, I tried "%40sort", but that also did not work.

What version of the product are you using? On what operating system?

20090225
Debian GNU/Linux

Please provide any additional information below.

Original issue reported on code.google.com by daniel.stutzbach on 24 Sep 2009 at 1:46

[GoogleCodeExporter]

Same issue here, but with a hyphen instead of a an ampersand.

What steps will reproduce the problem?
1. Go to the Site Configuration screen
2. Type "some-name" in the URL query field
3. Click Add

What is the expected output? What do you see instead?

Same as above

What version of the product are you using? On what operating system?
20090225
Windows

Note that the Sitemap URL filter does allow the use of a hyphen 
(/*cell-phone*), but 
it has no effect on the XML output (i.e. it doesn't include the URLs with that 
parameter name)

Original comment by tmobilew...@gmail.com on 4 Dec 2009 at 7:00