-1 on the face of things. The map_to_storage hook was added to accomplish what you desire.
I thought map_to_storage was made to do per-dir configuration. Not path-translation. The problem is not really doing the translation. I can always provide my own translate handler in my module. But in the current API I cannot to set my env. variables at will. They will be overwritten by ap_add_common_vars which returns carved-in-stone docroot from ap_document_root. My only other option is to patch every single module which calls add_common_vars, that is, cgi,cgid, fastcgi, includes,... I thought a document_root hook was more elegant. Or maybe a add_common_vars hook? [I would be happy to supply it]
Unfortunately it is not coupled to the DOCUMENT_ROOT variable, but I'd look at remedying this over building on ap_document_root, which should simply go away, IMHO.
What's so bad about ap_document_root? I know the source says 'dont use' because it won't be right with mod_userdir etc. But with a hook it would be possible to get right. /Jakob
