when the numbers would have been outside the integer range,

now return double vectors (without NAs, typically) in these cases.

now allows customizing error messages via

argument names, thanks to a patch proposal by

wildcard and tilde expansion.  Elements of

interface extended so that arguments to the negative

log-likelihood function can be one or more vectors, with similar

conventions applying to bounds, start values, and parameter values

to be kept fixed.  This required a minor extension to class

, so saved objects from earlier versions may need to

The default order of the levels on the y-axis for

to avoid warnings about X11-related capabilities.

but the only visible effects at user-level should be

a slightly different print format for some units

faster performance (for unit operations) and

fails, there is an attempt to dispatch on the

which typically ensures 1:1 invertibility.  New option

locale-independent results for possible string-to-factor

A server socket connection, a new connection type

representing a listening server socket, is created via

and can accept multiple socket connections

with many nodes has been significantly reduced

global condition handlers.  This allows registering default

handlers for specific condition classes. Developed in

restart if one is available and return without signaling an error

if no such restart is found.  Contributed by Lionel Henry in

to request that intervening call frames due to lazy evaluation or

calls be omitted from the recorded profile

files now follows POSIX shells (at least on a

Unix-alike), so the first treats empty environment variables as

set and the second does not.  Previously both ignored empty

variables.  There are several uses of the first form in

warnings or messages that inherit from particular classes.

Based on patch from Lionel Henry submitted with

terminals.  Line editing is possible when command

normalizes case of long names of path elements in case-insensitive

supports UTF-8 file names with characters

that cannot be translated to the native encoding (