changed in order to allow large structures (e.g., libraries,
syntax objects, etc.) to print efficiently. This is done by only
traversing the parts of the structure that will actually be
printed, rather than traversing the whole data structure (which is
what write/display used to do). Pretty-print should be fixed in a
similar manner (TODO).
define-record-type proceedures.
Record constructors are now called "a-record-constructor"
Record predicates are called "a-record-predicate"
Record accessors are called "a-record-accessor"
Record mutators are called "a-record-mutator"
* fixed bugs in record-constructor (incorrect constructor was
returned when when no protocol is supplied)
* added r6rs condition types (constructors and standard conditions).
Abdulaziz Ghuloum