[Chicken-janitors] Re: #300: allow reading without "hanging"

[Chicken Trac]

#300: allow reading without "hanging"
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  Reporter:  felix           |       Owner:                     
      Type:  enhancement     |      Status:  new                
  Priority:  minor           |   Milestone:                     
 Component:  core libraries  |     Version:  4.5.x              
Resolution:                  |    Keywords:  read-string no-hang
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Comment(by zbigniew):

 Older versions of chicken will raise an error when providing the read-
 buffered argument to make-input-port, and we cannot know when it is safe
 to do so.  Would you mind adding some sort of feature identifier or other
 way to determine when read-buffered is a legal optional argument?  This
 would help when create advanced custom ports.

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Ticket URL: <http://bugs.call-cc.org/ticket/300#comment:2>
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