NEW FEATURES:

• parallel::detectCores() is now able to find the number of physical cores (rather than CPUs) on Sparc Solaris.It can also do so on most versions of Windows; however the default remains detectCores(logical = TRUE) on that platform.
• Reference classes now keep a record of which fields are locked. $lock() with no arguments returns the names of the locked fields.
• HoltWinters() reports a warning rather than an error for some optimization failures (where the answer might be a reasonable one).
• tools::dependsOnPkg() now accepts the shorthand dependencies = "all".
• parallel::clusterExport() now allows specification of an environment from which to export.
• The quartz() device now does tilde expansion on its file argument.
• tempfile() on a Unix-alike now takes the process ID into account. This is needed with multicore (and as part of parallel) because the parent and all the children share a session temporary directory, and they can share the C random number stream used to produce the uniaue part. Further, two children can call tempfile() simultaneously.
• Option print in Sweave's RweaveLatex() driver now emulates auto-printing rather than printing (which can differ for an S4 object by calling show() rather than print()).
• filled.contour() now accepts infinite values: previously it might have generated invalid graphics files (e.g. containing NaN values).

• On 64-bit Linux systems, configure now only sets LIBnn to lib64 if /usr/lib64 exists. This may obviate setting LIBnn explicitly on Debian-derived systems.It is still necessary to set LIBnn = lib (or lib32) for 32-bit builds of R on a 64-bit OS on those Linux distributions capable for supporting that concept.
• configure looks for inconsolata.sty, and if not found adjusts the default R_RD4PDF to not use it (with a warning, since it is needed for high-quality rendering of manuals).

• R CMD INSTALL will now do a test load for all sub-architectures for which code was compiled (rather than just the primary sub-architecture).

• When checking examples under more than one sub-architecture, R CMD check now uses a separate directory examples_arch for each sub-architecture, and leaves the output in file pkgname-Ex_arch.Rout. Some packages expect their examples to be run in a clean directory ….

• stack() now gives an error if no vector column is selected, rather than returning a 1-column data frame (contrary to its documentation).
• summary.mlm() did not handle objects where the formula had been specified by an expression. (Reported by Helios de Rosario Martinez).
• tools::deparseLatex(dropBraces=TRUE) could drop text as well as braces.
• colormodel = "grey" (new in R 2.14.0)) did not always work in postscript() and pdf().
• file.append() could return TRUE for failures. (PR#14727)
• gzcon() connections are no longer subject to garbage collection: it was possible for this to happen when unintended (e.g. when calling load()).
• nobs() does not count zero-weight observations for glm() fits, for consistency with lm(). This affects the BIC() values reported for such glm() fits. (Spotted by Bill Dunlap.)
• options(warn = 0) failed to end a (C-level) context with more than 50 accumulated warnings. (Spotted by Jeffery Horner.)
• The internal plot.default() code did not do sanity checks on a cex argument, so invalid input could cause problems. (Reported by Ben Bolker.)
• anyDuplicated(, MARGIN=0) no longer fails. (Reported by Herv'e Pag`es.)
• read.dcf() removes trailing blanks: unfortunately on some platforms this included xa0 (non-breaking space) which is the trailing byte of a UTF-8 character. It now only considers ASCII space and tab to be 'blank'.
• There was a sign error in part of the calculations for the variance returned by KalmanSmooth(). (PR#14738)
• pbinom(10, 1e6, 0.01, log.p = TRUE) was NaN thanks to the buggy fix to PR#14320 in R 2.11.0. (PR#14739)
• RweaveLatex() now emulates auto-printing rather than printing, by calling methods::show() when auto-printing would.
• duplicated() ignored fromLast for a one-column data frame. (PR#14742)
• source() and related functions did not put the correct timestamp on the source references; srcfilecopy() has gained a new argument timestamp to support this fix. (PR#14750)
• LaTeX conversion of Rd files did not correctly handle preformatted backslashes. (PR#14751)
• HTML conversion of Rd files did not handle markup within tabular cells properly. (PR#14708)
• source() on an empty file with keep.source = TRUE tried to read from stdin(), in R 2.14.0 only. (PR#14753)
• The code to check Rd files in packages would abort if duplicate description sections were present.

NEW FEATURES:

• parallel::detectCores() is now able to find the number of physical cores (rather than CPUs) on Sparc Solaris.It can also do so on most versions of Windows; however the default remains detectCores(logical = TRUE) on that platform.
• Reference classes now keep a record of which fields are locked. $lock() with no arguments returns the names of the more...