ffi: adjust in semantics of variable zarray.

The replace function now returns a list if a nil object's is
replaced with a range, rather than just returning the original
item sequence. This breaks the variable array in operation,
causing it to produce a list. We fix this sproblem, and also
the nonsense semantics of the operation also; the operation
should replace the original sequence, with the array,
similarly to how null terminated strings work.

* ffi.c (ffi_varray_null_term_in): If the original Lisp object
isn't nil, then assume it's a sequence and replace it with the
items gathered in the vector. Otherwise, replace it with the
vector.

* txr.1: Adjust documentation.

1 files changed, 1 insertions, 1 deletions

diff --git a/ffi.c b/ffi.c
index 61551228..f8d7b566 100644
--- a/ffi.c
+++ b/ffi.c
@@ -2456,7 +2456,7 @@ static val ffi_varray_null_term_in(struct txr_ffi_type *tft, int copy, mem_t *sr
     offs += elsize;
   }
 
-  return replace(vec_in, vec, zero, length_vec(vec));
+  return if3(vec_in, replace(vec_in, vec, zero, t), vec);
 }
 
 static val ffi_varray_null_term_get(struct txr_ffi_type *tft, mem_t *src,