REPL returns nil when no value provided

[frenchy64]

Worth keeping mind when implementing *1.

;; jank
clojure.core=> ;comment
nil
clojure.core=> *1
unbound@0x111f53d20 for var #'clojure.core/*1

;; clj
user=> ;comment
user=> *1
1

Similiar oddity for \<enter>

;; jank
clojure.core=> \
clojure.core=>...
nil

;; clj
user=> \

Syntax error reading source at (REPL:2:1).
EOF while reading character

Or even just pressing enter:

;; jank
clojure.core=>
nil

;; clj
user=>
user=>

[jeaye]

\ and then enter is a hack we have in place right now to allow multi-line REPL code. It should be replaced with logic to detect unexpected EOF and wait for more input.

The other notes here I think are valid bugs.