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  • Robert Strandh's avatar
    Changed the contract of clone mark so that the optional argument is · 49323b25
    Robert Strandh authored
    either :left or :right forcing the return value to be a
    left-sticky-mark and a right-sticky-mark respectively.
    
    Altered the two calls (in test code) that actually used the optional
    argument to pass the right thing.
    
    Modified the implementation of clone-mark to use constant symbols for
    the class to instantiate, and made two methods so that the type of the
    argument will be known statically.  Still needed an explicit test for
    the optional argument, but that is still much faster than using a
    variable class to make-instance.
    49323b25