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add check for empty second list in list= (fixes issue #407)

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This commit is contained in:
Alex Shinn 2017-05-08 12:04:13 +09:00
parent fad9e4ca8b
commit 779c60ac35
2 changed files with 4 additions and 1 deletions
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3
lib/srfi/1/predicates.scm
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@ -29,7 +29,8 @@
(if (null? ls1)
(and (null? ls2)
(lp1 (cdr lists)))
(and (eq (car ls1) (car ls2))
(and (pair? ls2)
(eq (car ls1) (car ls2))
(lp2 (cdr ls1) (cdr ls2))))))))
(define (length+ x)

2
lib/srfi/1/test.sld
View file

@ -32,6 +32,8 @@
(test #f (pair? 'a))
(test #t (list= eq?))
(test #t (list= eq? '(a)))
(test #f (list= = '(1 2) '(1 2 3)))
(test #f (list= = '(1 2 3) '(1 2)))
(test 'a (car '(a b c)))
(test '(b c) (cdr '(a b c)))
(test '(a) (car '((a) b c d)))