[Chicken-janitors] #1085: srfi-1's list= and lset procedures don't check their first arguments

[Chicken Trac]

#1085: srfi-1's list= and lset procedures don't check their first arguments
-------------------------------+--------------------------------------------
 Reporter:  evhan              |       Owner:         
     Type:  defect             |      Status:  new    
 Priority:  not urgent at all  |   Milestone:  someday
Component:  core libraries     |     Version:  4.8.x  
 Keywords:  srfi-1             |  
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 {{{list=}}}, {{{lset=}}}, {{{lset-union}}} and friends each expect a
 comparator as the first argument, but nothing bad happens if you don't
 give one (except some weird results).

 {{{
 (list= '(1) '(2)) ; => #t
 (lset= '(1) '(2)) ; => #t
 (lset-union '(1) '(2)) ; => (2)
 (list= '(1) '(2) '(3)) ; => triggers an error (call of non-procedure: (1))
 }}}

 It seems like these should check the types of their first arguments (which
 might be as simple as replacing the commented-out {{{check-arg}}} guards
 from the srfi-1 reference with {{{##sys#check-closure}}}). On the other
 hand, some other Schemes (Chibi, Gauche, Racket) do the same thing as we
 do, currently.

-- 
Ticket URL: <http://bugs.call-cc.org/ticket/1085>
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