* expand() will only touch the memory once
* fixed missing if-else cascade at toy_routine.c:90
* unary negate will not optimise numbers unless the '-' character is immediately prior
* fixed broken test for unary negation of groups
The tests are failing in a strange way, with the error message 'corrupted top size'. I don't know what it means, and it seems to be caused by a call to printf() within 'test_bytecode.c'. I need a break, as this is making me dizzy.
