bugfix: tail handles improper list.

* lib.c (tail): This low-level function is used by the
list accumulation routines. Because it doesn't handle
improper lists, looking for a null terminator, certain
things don't work, like the associativity of append.
For instance (append '(1 2) #(3) 4) works but not
(append (append '(1 2) #(3)) 4). Fixing tail so that it
terminates on any atom, rather than failing trying to
cdr through it.

0 files changed, 0 insertions, 0 deletions