I just introduced a bug in the BBC BASIC implementation meaning that
'load-file' was broken on files over 255 bytes long, and it was only
caught by the optional test of 'time-ms' in step A. This change brings
forward the relevant part of that test so the failure can be detected
earlier and more obviously, at the same time as the other tests of
'load-file'.
The test makes more sense in step6.
Thanks to kanaka for the read-string suggestion.
Introduction of tail call optimization in step5 was making let* affect
the parent environment. This was partially fixed in later steps.
Introduction of macros in step8 was breaking the evaluation of an
empty list. This was fixed by step 9 but never backported.
- tests/*: marked with deferable and optional runtest flags. Some
moving around of tests within different sections to more closely
align with the guide.
- runtest.py has --deferable/--no-deferable and
--optional/--no-optional to control whether tests marked as
deferable and optional are tested.
- Makefile: DEFERABLE and OPTIONAL top level flags to be passed to
runtest when running tests.
- Also, fix problems in java quoting revealed by step7 test changes.
- Move some of the more optional things (conj, readline) to stepA. All
implementations pass step9 tests now.
- Move metadata and atoms to stepA.
- Update step9 and stepA diagrams.
- Some additioanl tests.
- Split step9 tests into optional but self-hosting requirements
(metadata on functions) and other optional (conj, metadata on
collections).
