# File lib/math_ml/latex.rb, line 1094
                        def env_matrix_row
                                r = Tr.new
                                until @scanner.check(RE::WBSLASH) || @scanner.peek_command=="end"
                                        r << push_container(Td.new) do |td|
                                                td << parse_to_element(true) until @scanner.peek_command=="end" || @scanner.check(/(&|\\\\)/) || @scanner.eos?
                                        end
                                end
                        end