\r
TUPLE: an-observer { i integer } ;\r
\r
-M: an-observer model-changed nip [ 1+ ] change-i drop ;\r
+M: an-observer model-changed nip [ 1 + ] change-i drop ;\r
\r
[ 1 0 ] [\r
[let* | m1 [ 1 <model> ]\r
o1 i>>\r
o2 i>>\r
]\r
-] unit-test
\ No newline at end of file
+] unit-test\r