[Chicken-janitors] #915: "(read-string #f)" from console does not detect EOF correctly

[Chicken Trac]

#915: "(read-string #f)" from console does not detect EOF correctly
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 Reporter:  felix                    |       Owner:  felix
     Type:  defect                   |      Status:  new  
 Priority:  major                    |   Milestone:  4.9.0
Component:  unknown                  |     Version:  4.8.x
 Keywords:  read-string eof console  |  
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 For example:

   csi -e '(read-string #f)'

 will read input forever and the input can not be terminated via C-d.
 Apparently `fast_read_string_from_file()` resets the EOF status (using
 `clearerr()`) which will continue reading when reading from the console.

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Ticket URL: <http://bugs.call-cc.org/ticket/915>
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