Bug #512: String#% behavior
http://redmine.ruby-lang.org/issues/show/512

Author: Federico Builes
Status: Open, Priority: Normal

Right now String#%  is calling #to_ary on the its arguments for every case. Should it call it on cases where it only receives one argument?

Example:


    "%c" % 65   # the call's not really necessary but it's done here.


We'd like to have this clarified for Rubyspec and for Rubinius. 
Thanks


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