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A general description is here.
‘read.dcf()’ and ‘write.dcf()’ now treat DCF files (such as package ‘DESCRIPTION’ and repository ‘PACKAGES’ files) as UTF-8, as required by the Debian control file format. ‘read.dcf()’ returns values in UTF-8 and ‘write.dcf()’ always writes UTF-8 regardless of the session locale; bytes which are not valid UTF-8 are preserved by escaping them as ‘<xx>’ rather than being re-encoded via a ‘Encoding’ field. As a consequence, the ‘useBytes’ argument of ‘write.dcf()’ is ignored, and non-UTF-8 ‘DESCRIPTION’ files (e.g. those declaring ‘Encoding: latin1’) are no longer re-encoded on reading.
‘binom.test()’ and ‘poisson.test()’ can now at least optionally compute central two-sided p-values which match the confidence intervals. Same for ‘fisher.test()’ in the 2 by 2 case and ‘mantelhaen.test()’ in the 2 by 2 by K case if an exact conditional test is performed.