[Chicken-janitors] #288: remove "outer" bindings for non-standard procedures in library procedure definitions

[Chicken Trac]

#288: remove "outer" bindings for non-standard procedures in library procedure
definitions
-------------------------------+--------------------------------------------
 Reporter:  felix              |       Owner:       
     Type:  task               |      Status:  new  
 Priority:  not urgent at all  |   Milestone:       
Component:  core libraries     |     Version:  4.5.x
 Keywords:                     |  
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 The idiom

 {{{
 (define FOO
   (let ((P1 P1) ...)
     (lambda ...
 }}}

 is used in many places in the core libraries, but R5RS merely requires
 standard procedures to be safe-for-redefinition. To reduce the closure
 size of built-in procedures, those bindings can be omitted if referring to
 non-R5RS procedures.

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Ticket URL: <http://www.irp.oist.jp/trac/chicken/ticket/288>
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