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The DVI/PDF reference manual now includes the help page for all the standard packages: ‘splines’, ‘stats4’ and ‘tcltk’ were previously omitted.
The PDF reference manual is now built as PDF version 1.5 with object compression, which on platforms for which this is not the default (notably MiKTeX) halves its size.
‘seq.int’ no longer sometimes evaluates arguments twice. (PR#14388)
The ‘data.frame’ method of ‘format’ failed if a column name was longer than 256 bytes (the maximum length allowed for an R name).
‘predict(<lm object>, type ="terms", ...)’ failed if both ‘terms’ and ‘interval’ were specified. (Reported by Bill Dunlap.)
Also, if ‘se.fit = TRUE’ the standard errors were reported for all terms, not just those selected by a non-null ‘terms’.
The TRE regular expressions engine could terminate R rather than give an error when given certain invalid regular expressions. (PR#14398)