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Experimentally, setting environment variable ‘_R_CHECK_LENGTH_1_LOGIC2_’ will lead to warnings (or errors if the variable is set to a ‘true’ value) when ‘&&’ or ‘||’ encounter and use arguments of length more than one.
Added ‘"lines"’ and ‘"chars"’ coordinate systems to ‘grconvertX()’ and ‘grconvertY()’.
‘kruskal.test()’ and ‘fligner.test()’ no longer erroneously insist on numeric ‘g’ group arguments (PR#16719).