RewriteRule-env: setting values containing ","

Hello Apache-pros,

I´m having some trouble setting the right values for my query-string variable by using the RewriteRule-env syntax:

I´m using a variable to keep and change the content of the QUERY_STRING parameter. At the very end I do a proxy-redirect with the content in my variable.

The problem is now: The framework of the proxy-target requires query-strings that contain comma-seperated lists

e.g.

http://myhost/path?p=long,query,string,with,commas,23456

Code (markup):

To accomplish this I wrote rules of type:

	RewriteCond %{REQUEST_URI} /something-(.*)-(.*) 
	RewriteRule (.*) - [env=QRY_STR:long,query,string,with,commas,%1] 

Code (markup):

The Apache won´t start with these configs but I don´t see anything in my error.log. I guess, the commas corrupt the syntax: If I remove them, the Apache starts fine.

Do you know a way how I can use commas in my env-variable?

By the way: Using "%2C" doesn´t work, because the %2 will be replaced by the second regexp string.

Thanks for any help