[development] Block visibility

[Karoly Negyesi]

On Sat, 31 Dec 2005 15:39:18 +0100, Karthik <narakasura at gmail.com> wrote:

> Hi,
>
>    I just noticed the introduction of the option to use PHP code to
> control visibility (on the block configure page). Is there any
> documentation on this or any links to the conversation that led to
> this decision? Besides being IMHO decidedly un-user-friendly, this
> could very likely lock an admin out of his entire site.

Dries' letter:  
http://lists.drupal.org/pipermail/development/2005-April/004310.html
The patch: http://drupal.org/node/21353

Regards

NK