full discussion here: http://drupal.org/node/76824
and provide a syntax for other pages to do so (panels.module). this is a bandwidth, CPU, page cache savings.
It's ready to go, been tested. Docs will need to be updated once this lands.
Someone needs to update the docs about this.
I added a blurb on the module upgrading page. Not sure where else.
Quick question- can the search (or login) blocks still show on 403 or 404 pages?
Up to the theme decide, there are some new variables to work with.
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