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A general description is here.
‘R CMD build’ no longer attempts to preserve file permissions on
Windows, because Windows (unlike POSIX-compliant OSes) stops read-only
files being deleted in version-control directories.
‘shell.exec()’ now interprets files relative to the current working
directory (rather than ‘R_HOME’).
‘file.info()’ now accepts ‘file’ names with trailing directory
separators, even though such names are invalid on Windows.
The ‘windows()’ family of devices now supports() per-pixel alpha for
raster images.
Launching the PDF manuals from the Rgui menus did not work on some
versions of Windows.
The windows() screen device would sometimes fail to plot (visibly)
points with ‘pch="."’. PR#14583
‘system()’ and related functions sometimes failed when run in ‘Rgui’.
Saving to PDF from the menu of a ‘windows()’ device used defaults for
‘family’, ‘fg’ and ‘bg’ from ‘ps.options()’ rather than ‘pdf.options()’
(but the factory-fresh defaults were the same).
Shutting down the R session cleaned up the temporary directory before
closing all graphics devices. On Windows this necessitated changing
the working directory, so some devices (e.g. ‘tiff()’) could write
files in the wrong directory if closed during shutdown. The order has
been reversed.
‘R CMD build’ no longer attempts to preserve file permissions on Windows, because Windows (unlike POSIX-compliant OSes) stops read-only files being deleted in version-control directories.
‘shell.exec()’ now interprets files relative to the current working directory (rather than ‘R_HOME’).
‘file.info()’ now accepts ‘file’ names with trailing directory separators, even though such names are invalid on Windows.
The ‘windows()’ family of devices now supports() per-pixel alpha for raster images.
Launching the PDF manuals from the Rgui menus did not work on some versions of Windows.
The windows() screen device would sometimes fail to plot (visibly) points with ‘pch="."’. PR#14583
‘system()’ and related functions sometimes failed when run in ‘Rgui’.
Saving to PDF from the menu of a ‘windows()’ device used defaults for ‘family’, ‘fg’ and ‘bg’ from ‘ps.options()’ rather than ‘pdf.options()’ (but the factory-fresh defaults were the same).
Shutting down the R session cleaned up the temporary directory before closing all graphics devices. On Windows this necessitated changing the working directory, so some devices (e.g. ‘tiff()’) could write files in the wrong directory if closed during shutdown. The order has been reversed.