ffi: turn carray-sub into accessor.

* lisplib.c (ffi_set_entries): Register carray-sub
for autoload.

* share/txr/stdlib/ffi.tl (carray-sub): New place
macro, aliases to sub. This is not 100% correct since
that means it will admit non-carray objects, but
the alternative is to clone the entire sub expander
with a few changes, or else factor out sub expansion
into a shared routine. Bleh ...

* txr.1: Documented. We don't cover up the ruse we
perpetrated, and reveal that it's just a place macro
targetting sub.

1 files changed, 1 insertions, 1 deletions

diff --git a/lisplib.c b/lisplib.c
index 2b57c578..3e57d627 100644
--- a/lisplib.c
+++ b/lisplib.c
@@ -526,7 +526,7 @@ static val ffi_set_entries(val dlt, val fun)
     lit("with-dyn-lib"), lit("deffi"), lit("deffi-type"), lit("deffi-cb"),
     lit("deffi-var"), lit("typedef"), lit("sizeof"), lit("alignof"),
     lit("offsetof"), lit("arraysize"), lit("elemsize"), lit("elemtype"),
-    lit("ffi"), lit("carray-ref"),
+    lit("ffi"), lit("carray-ref"), lit("carray-sub"),
     nil
   };
   set_dlt_entries(dlt, name, fun);