encountered where it was set incorrectly (usually to a path where

software was compiled, not where it was installed).

, the preferred way to select a non-default shell,

specified as character vectors, and the defaults have been changed

Graphics devices can add attributes to their description in

uses hashing in more cases and so is faster

variables to be plotted against each other.

of columns to be computed on Unix-alikes: on some systems without

properly-configured caching this can be significantly faster with

test efficiently whether one or more paths exist and are

complex quantities as, respectively, binary fractions (exactly,

binary->decimal->binary conversions with potential loss of

precision.  Unfortunately the Windows C runtime's lack of C99

compliance means that the format cannot be read correctly there in

are set to the same value (period and comma

are not uncommonly used for each, and this is a check that

can create a result which uses long vectors

are most often used for data objects where this can

Packages may now use a file of common macro definitions in

their help files, and may import definitions from other packages.

A number of macros have been added in the new

directory for use in package overview help pages,

argument which converts unrecognized macros into text.  This is

external pointer, a weak reference or byte code; the first enables

code access to a function's return value for

in these cases (also reported by Radford Neal).

The byte-code compiler and interpreter include new

instructions that allow many scalar subsetting and assignment and

scalar arithmetic operations to be handled more efficiently. This

can result in significant performance improvements in scalar

allowing to temporarily turn off debugging.

code only if used interactively (a change in behaviour).

versions of third-party software in use in this session.

reports on third-party graphics software.

will report a warning when an insufficient

dependency version is masking a sufficient one later on the

sources impacts the check results of their reverse dependencies.