Unambiguous alternate doctest format
Idea: abandon the format of
>>> some_code ... more code some output
Instead, go for a format where the different _kinds_ of output are kept distinct. The different kinds of output are:
- return value of an evaluated expression
- sys.displayhook (superset of ^)
(maybe stderr would be nice too).
Of those, stdout and sys.displayhook can be interleaved and cause problems, and in all cases it is difficult to find where stdout ends and the next thing begins. By separating these out explicitly, it would be clear.
Probably it's best to forget about writing my own parser and just piggyback on ReST, so this is listed under the Sphinx extension.