[Bug-mit-scheme] [bug #19535] Reduction of Lists: 'reduce' reverses arguments

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?19535>

                 Summary: Reduction of Lists:  'reduce' reverses arguments
                 Project: MIT/GNU Scheme
            Submitted by: None
            Submitted on: Friday 04/06/2007 at 04:18 UTC
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect behavior
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: Anton Davis
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                Keywords: 

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Details:

The functions 'reduce-right', 'fold-left' and 'fold-right' work as described
in the documentation, but 'reduce' produces incorrect results.

(reduce list '() '(1 2 3 4)) => (4 (3 (2 1))
(reduce - 0 '(1 2 3 4))      => 2

whereas

(list (list (list 1 2) 3) 4) => (((1 2) 3) 4)
(- (- (- 1 2) 3) 4)          => -8

It seems that 'reduce' reverses the order of its arguments in release
7.7.90.+.






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