User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.8.1.14) Gecko/20080404 Iceweasel/2.0.0.14 (Debian-2.0.0.14-2) Build Identifier: am porting pyjamss-desktop to XUL (actually python-xpcom actually python-hulahop). have got a long way - everything is working _except_ you can't get at the "optional" arguments of nsIXMLHttpRequest. 1st arg - POST, great. 2nd arg - url, great. 3rd arg, async=True - BARF, python-xpcom complains "open takes exactly 3 args, 4 given". (1st is always self in python) Reproducible: Always Steps to Reproduce: 1. download pyjamas from sourceforge, go via http://pyjs.org get latest svn 2. do apt-get install python-xpcom python-hulahop on debian/unstable or debian/testing 3 cd pyjamas 4 python bootstrap.py 5 sudo python run_bootstrap_then_setup.py install 3. cd examples/jsonrpc 4. python JSONRPCExample.py 5. click on "Send to PHP Service" Actual Results: error output "open takes exactly 3 args, 4 given". Expected Results: async XMLHTTPRequest actually happens, duh.

The IDL doesn't represent the full method call available from JS. I'm not sure this is something we want to bother with, since JS is the primary scripting language for the web.

I claim this would work if we still supported Python, thanks to bug 459452.