on Windows is now able to work with path names longer than

260 characters when these are enabled in the system (requires at least

Windows 10 version 1607).  Packages should be updated to work with

maximum length.  Custom front-ends and applications embedding

to update their manifests if they wish to allow this feature.  See

errors now give a more accurate error context. Patch provided by

for objects to resolve cases where two suitable methods are found

for an Ops Group Generic. This supports experimenting with

, is called to resolve the class name from

. This supports experimenting with alternative object

FlexiBLAS now reports the current backend.

about extraneous arguments, typically catching the use of

than one may now be made into an error by setting environment variable

Q-Q plot for GLMs. Instead it plots a half-normal Q-Q plot of the

absolute value of the standardized deviance residuals.

longer shows summary statistics for the deviance residuals by

function now accepts a data frame as its

with a large number of columns.  (Thanks to

by a report from Toby Dylan Hocking on the R-devel mailing list.)

frames, particularly useful for the list arrays created by

On platforms where (non-UTC) datetimes before 1902 (or

before 1900 as with system functions on recent macOS) are guessed

by extrapolating time zones from 1902-2037, there is a warning at

the first use of extrapolation in a session.  (As all time zones

post 2037 are extrapolation, we do not warn on those.)

Windows and by default macOS). How years are printed in dates or

date-times can be controlled by environment variable

.  The default remains to pad to 4 digits

tries harder to determine the offset for

produced -- attempting to exceed this is an error.  (Previously it

system time zone as part of the locale information.  Also, the

source (system/internal) of the date-time conversion and printing

set on the (almost all) platforms which have C-level support,

There are comprehensive validity checks on the structure of

formatting and printing).  (This avoids mis-conversions of