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‘warnings()’ now always inherits from ‘"warnings"’ as documented, newly also in the case of no warnings, where it previously returned ‘NULL’.
Some invalid ‘file’ arguments to ‘pictes()’, ‘postscript()’ and ‘xfig()’ opened a file called ‘NA’ rather than throw an error. These included ‘postscript(NULL)’ (which some people expected to work like ‘pdf(NULL)’).
Passing ‘filename = NA’ to ‘svg()’, ‘cairo_pdf()’, ‘cairo_ps()’ or the Cairo-based bitmap devices opened a file called ‘NA’: it now throws an error.
‘quartz(file = NA)’ opened a file called ‘NA’, including when used as a Quartz-based bitmap device. It now gives an error.
‘rank(<long vector>)’ now works, fixing PR#18617, thanks to Ilia Kats.
‘seq.int()’ did not adequately check its ‘length.out’ argument.