silverstripe/sapphire — pull request #638 by mateusz (2012-07-13 01:58:37+00:00)
Title: Prevent the surprising link removal in preview.

Users can deal with links pointing to external sites - my clients were
surprised the external links don't work, and were asking us to fix that,
just because they have assumed preview will behave like a "real site".

@Ingo was there any reason why this code was added in a first place?

If we decide to retain it, http://open.silverstripe.org/ticket/7652 needs to be fixed.