The bug https://bugs.r-project.org/bugzilla3/show_bug.cgi?id=15463
appears to be R.app specific. All of the data editors (R.app, X11, Windows) round the data for display, but the one in R.app appears to reload the data from the rounded values, whether edited or not.
I've just confirmed this still exists with the 3.0.2 release: > sessionInfo() R version 3.0.2 (2013-09-25) Platform: x86_64-apple-darwin10.8.0 (64-bit) locale: [1] en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8 attached base packages: [1] stats graphics grDevices utils datasets methods base Duncan Murdoch _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-mac