Rebol 3 functions MODIFIED? and EXISTS? don't work on URL type

Question

Do any of the REBOL 3 gurus here know why the modified?, exists? and size? functions fail on R3 when targeting a URL?

These functions work fine on local files.

I am very familiar with R2, but R3 behavior seems strange at times. I am using stock code compiled from the Dec 12, 2012 open source release, and am running on Windows 7.

Answer 1

Mainly, support for those functions is not yet implemented for most URL schemes (see for example, issue #467 for HTTP, or #1826 for DNS).

All three mentioned functions use QUERY as the underlying action to obtain the information needed. So it's a matter of the implementation for a particular URL scheme also properly implementing full QUERY support.