[Chicken-janitors] Re: #356: #!key and #!rest only work when number of rest arguments is even

[Chicken Trac]

#356: #!key and #!rest only work when number of rest arguments is even
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  Reporter:  ckeen           |       Owner:  felix                  
      Type:  defect          |      Status:  new                    
  Priority:  major           |   Milestone:                         
 Component:  core libraries  |     Version:  4.5.x                  
Resolution:                  |    Keywords:  DSSSL keyword arguments
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Comment(by felix):

 Replying to [comment:3 ckeen]:
 > It does! So the programmer itself needs to make sure to never violate
 the rule?

 Well, yes. The question is, whether this is a real problem, what kind of
 performance-impact such a check has and whether it makes sense to accept
 any combination of keyword/argument pairs. What about

   ((lambda (#!rest r #!key f) ...) 1 f: f:)

 This is legal, since keywords are first-class. Is their any advantage in
 disallowing this? Can there be cases where someone actually wants this
 behaviour? I couldn't tell, really.

-- 
Ticket URL: <http://bugs.call-cc.org/ticket/356#comment:4>
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