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‘R CMD build’ removes ‘LazyData’ and ‘LazyDataCompression’ fields from the ‘DESCRIPTION’ file of packages without a ‘data’ directory.
‘R CMD build’ omits tarballs and binaries of previous builds from the top-level package directory. (PR#17828, patch by Sebastian Meyer.)
‘sub()’ and ‘gsub(pattern, repl, x, *)’ now keep attributes of ‘x’ such as ‘names()’ also when ‘pattern’ is ‘NA’ (PR#18079).
Time differences (‘"difftime"’ objects) get a replacement and a ‘rep()’ method to keep "units" consistent. (Thanks to a report and patch by Nicolas Bennett in PR#18066.)