longer cause infinite recursion when the structure is not an S4 object.

overrides the default value of a generic formal argument to

no longer drops the argument from its formals.

can now accept more than one argument given on

line of a script. Previously, one could only pass a

Connections are now written correctly with encoding

(Windows mainly.)  Unicode code points which require

surrogate pairs in UTF-16 are now handled.  All systems should

properly handle surrogate pairs, even those systems that do not

expressions sequentially and in case of an error or warning shows

the relevant expression instead of the full

on Windows now accepts paths specified as

UTF-8-encoded character strings even if not representable in the

now correctly computes the medians of the

left and right group's x-values and in all cases reproduces

Extending S4 classes with slots corresponding to special

for a library tree that had been emptied (but would not use the

old value, just waste time checking it).

incorrectly claimed it would refresh the cache.

re-encoding issues, notably seen in some Windows locales.  This

error message when the number of points is less than four.

definition; the result may only differ when

deep recursion, thanks to Suharto Anggono via

Arithmetic with zero-column data frames now works more

consistently; issue raised by Bill Dunlap.

Arithmetic with data frames gives a data frame for

classes and hence return a match in more cases.  This e.g., fixes

Reverted unintended change in behavior of

expressions introduced by stack unwinding

Attributes on symbols are now detected and prevented; attempt

to add an attribute to a symbol results in an error.

the internal stack size which allows larger problem to be solved,

(attributes) into a prototype that is of an

package correctly shows methods when there

are multiple methods with the same signature for the same generic

(still not fully supported, but at least the user can see them).

correctly in all cases and is faster.  (

when returning a logical vector now always maps