Re: [Chicken-janitors] #1152: Reserved pattern symbols break when a binding of the same name exists

[Chicken Trac]

#1152: Reserved pattern symbols break when a binding of the same name exists
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  Reporter:  syn         |       Owner:  ashinn       
      Type:  defect      |      Status:  closed       
  Priority:  major       |   Milestone:  someday      
 Component:  extensions  |     Version:  4.9.x        
Resolution:  wontfix     |    Keywords:  matchable egg
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Changes (by ashinn):

  * status:  new => closed
  * resolution:  => wontfix


Comment:

 This is basically just hygiene working as expected, and gives
 that result for the same reason that

   (let ((else #f))
     (cond (else #t) (#t #f)))

 returns #f.

 Admittedly this is one of those cases where it's not useful to
 match the operator position id against the current lexical scope
 and one might be tempted to deliberately match unhygienically.
 However, this may change in future versions.  Moreover,
 other macros which expand into match may depend on the
 fact that inserted identifiers match hygienically.

-- 
Ticket URL: <http://bugs.call-cc.org/ticket/1152#comment:2>
CHICKEN Scheme <http://www.call-with-current-continuation.org/>
CHICKEN Scheme is a compiler for the Scheme programming language.