+++ balpha [Sep 04 14 09:31 ]:
So the issue this solves is almost non-existent, but the solution comes at the cost that moving an indented code block from top level into a list items by just moving its left margin may cause the code block to suddenly break.
This does strike me as a serious strike against the two-blank-line rule.
It’s bad in general if the meaning of a document-part changes when we
put it into a list item.
See Reconsidering "two blank lines breaks out of lists"
[Sorry for the late reply - I missed a great deal of substantive
discussion right after the launch, when I was getting too much email to
deal with. Starting to look back over the earlier comments on this
forum.]