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David Flanagan. [ruby-core:12344] * array.c (rb_ary_combination): RDoc update to clarify. a patch from David Flanagan. [ruby-core:12344] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13590 b2dd03c8-39d4-4d8f-98ff-823fe69b080e