with-resources: undocumented nil skip behavior.

Paul A. Patience discovered the hidden "feature" of
with-resourcers, that the three-argument form of the binding
(var init cleanup) causes the with-resources form to terminate
if init returns nil. The (var init) syntax doesn't generate
this logic.

* stdlib/with-resources.tl (with-resources): Do not emit the
when form unless <= 265 compatibility is in effect.

* tests/012/oop-mac.tl: New file.

* txr.1: Compat note added.

0 files changed, 0 insertions, 0 deletions