[support] Issue with multisite url creation for edit forms action parameter...

[Tao Starbow]

I have been able to solve all the issues with multisite except this last 
one, which is the url in the action parameter for the edit forms being 
created incorrectly.

This problem only shows up for multisite, and only when I use with 
apache & the baseURL to make a multisite site look like a single site.  
For example the main CITRIS site is really located at 
http://citrissrv2.berkeley.edu/citris.  It sits behind an apache server 
that does a proxy pass from http://www.citris-uc.org 
<http://www.citris-uc.org> to 
http://citrissrv2.berkeley.edu/drupal/citris.  I have set the site's 
baseURL to http://www.citris-uc.org <http://www.citris-uc.org/>, and 90% 
of the time this works fine.  However, when Drupal generates a edit 
forms, it prepends "/citris" to the url.  So where it should have 
action="/node/123/edit", it generates action="/citris/node/123/edit".  
This does not happen if the baseURL is 
http://citrissrv2.berkeley.edu/citris and proxy pass is not used.

To deal with this issue, I set up a symbolic link so that 
$durpal_dir/citris just points back to $drupal_dir.  This is an easy fix 
that works most of the time.  However, modules such as webform and 
project have forms that use secondary pages as subforms, and as the 
pages pass the data back-and-forth, I end up with urls like 
action="/citris/citris/citris/citris/citris/node/123/edit" and so on, 
until the url finally gets too long for the browser to handle, the url 
gets clipped & the user is set to an error page.

I suspect I am going to be diving into core to address this one, but I 
still hope it might just be a configuration error on my part.  I am 
grateful for any tip & leads.

Thanks,
Tao Starbow
Web Architect, CITRIS