Lighttpd

The broken logic is at http://trac.lighttpd.net/trac/browser/branches/lighttpd-1.4.x/src/mod_rewrite.c#L388

This bug makes it impossible to perform URL escaping via mod_rewrite since there's no way to generate the % characters.

To reproduce, write a rewrite-rule that attempts to convert

'/\+' => '/%%2B'

and use 'curl -I SERVER/+' or similar to generate a request. Then examine your error logs.

-- Michael Stone <michael