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authorKeith Packard <keithp@keithp.com>2017-12-01 11:32:27 +0100
committerKeith Packard <keithp@keithp.com>2017-12-01 11:32:27 +0100
commit5d0b85f25fa1e5cc816a8256afb38cf9552f6d9d (patch)
treed0ea124400ab543661e338406ed62566f237d4e0
parent796017262cd433af5d143cc7168c944e1e05f4e2 (diff)
altos/lisp: return from unmatched cond is #f, not nil
Fix the return value when we fall off the end of a cond expression to be #f Signed-off-by: Keith Packard <keithp@keithp.com>
-rw-r--r--src/lisp/ao_lisp_eval.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/lisp/ao_lisp_eval.c b/src/lisp/ao_lisp_eval.c
index 1044aa48..fa25edf0 100644
--- a/src/lisp/ao_lisp_eval.c
+++ b/src/lisp/ao_lisp_eval.c
@@ -350,7 +350,7 @@ ao_lisp_eval_cond(void)
DBGI(".. frame "); DBG_POLY(ao_lisp_frame_poly(ao_lisp_frame_current)); DBG("\n");
DBGI(".. saved frame "); DBG_POLY(ao_lisp_stack->frame); DBG("\n");
if (!ao_lisp_stack->sexprs) {
- ao_lisp_v = AO_LISP_NIL;
+ ao_lisp_v = _ao_lisp_bool_false;
ao_lisp_stack->state = eval_val;
} else {
ao_lisp_v = ao_lisp_poly_cons(ao_lisp_stack->sexprs)->car;