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| author | Kaz Kylheku <kaz@kylheku.com> | 2011-12-14 14:43:03 -0800 |
|---|---|---|
| committer | Kaz Kylheku <kaz@kylheku.com> | 2011-12-14 14:43:03 -0800 |
| commit | 311294aef85c349ee71c3925a52d0888073a1fa0 (patch) | |
| tree | c1fb738b283405460d30abb9dd3ab759f32501b6 /eval.c | |
| parent | 1f2f893c7de22ef3f64d68e0b62d43fbdb07af7c (diff) | |
| download | txr-311294aef85c349ee71c3925a52d0888073a1fa0.tar.gz txr-311294aef85c349ee71c3925a52d0888073a1fa0.tar.bz2 txr-311294aef85c349ee71c3925a52d0888073a1fa0.zip | |
* lib.c (car, cdr): Semantics fix for lazy conses.
Ignore the return value of the lazy cons function: do not
return nil if the function returns nil.
This useless behavior was a source of inconvenience in lazy
cons programming, requiring the lazy function to return
non-nil in addition to installing the car and cdr fields.
Diffstat (limited to 'eval.c')
0 files changed, 0 insertions, 0 deletions