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Test for positive "by", see issue 300 #5

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Test for positive "by", see issue 300 #5

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15 changes: 14 additions & 1 deletion ansi-tests/loop1.lsp
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Original file line number Diff line number Diff line change
Expand Up @@ -358,4 +358,17 @@
(loop for i from 1 below (expand-in-current-env (%m 5)) collect i))
(1 2 3 4))


;;; http://www.lispworks.com/documentation/lw51/CLHS/Body/06_abaa.htm
;;; by The loop keyword by marks the increment or decrement supplied by form3.
;;; The value of form3 can be any positive number. The default value is 1.
(deftest loop.1.66
(signals-error
(loop for i below 10 for j by 0 collect (list i j))
program-error)
t)

(deftest loop.1.67
(signals-error
(loop for i below 10 for j by -1 collect (list i j))
program-error)
t)