Issue #1526 has been updated by Keiju Ishitsuka.

Status changed from Open to Rejected

Matrix[[]] is 1x0-Empty Matrix. This matrix column size is 0, and row_size is 1. Therefore, Matrix[[]].column_vectors is empty array, and Matrix[[]].row_vectors is a array of one empty vector.
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http://redmine.ruby-lang.org/issues/show/1526

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http://redmine.ruby-lang.org