Select first page from HTTP Stream

 Hello everyone,  

 selecting the first page of an image/document works great when
reading from a local file. (e.g. $thumbnail=new
Imagick("test.pdf[0]");)  

 But when I try to open a remote source and selecting page 1 ([0])
from it, it fails because it takes the [0] as part of the remote
url...  

 For example, $thumbnail=new
Imagick("http://www.domain.com/doc.pdf[0]"); doesn't work...  

 Can this behaviour be overcome by some special quoating? Is it a
technical limitation? Or a bug?  

 Cheers,  

 Sascha