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‘unzip(list = TRUE)’ returned a factor and not a character vector (as documented) for ‘Names’ in the internal method. (Noticed by Sean O'Riordain.)
‘cat()’ with ‘sep’ a character vector of length greater than one and more than one argument was using separators inconsistently (PR#15261).
On Windows in R 3.0.0, ‘savePlot()’ failed because of an incorrect check on the argument count.