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A general description is here.
‘R CMD INSTALL’ (and hence ‘check’) will compile C++ code with ‘-DR_NO_REMAP’ if environment variable ‘_R_CXX_USE_NO_REMAP_’ is set to a true value. It is planned that this will in future become the default for compiling C++.
‘pmatch(x, table)’ for large ‘table’, also called for data frame row
selection, ‘dfrm[nm, ]’, is now interruptible, fixing PR#18656.
‘pmatch(x, table)’ for large ‘table’, also called for data frame row selection, ‘dfrm[nm, ]’, is now interruptible, fixing PR#18656.
‘predict(<rank-deficient lm>, newdata=*)’ fix computing of ‘nbasis’, see Russ Lenth's comment 29 in PR#16158.