So, the proposal would then be to write to tempdir(), correct? If so, I see three alternatives:
1. explicitly use file.path(tempdir(), filename), or tempfile() everywhere. 2. wrap example code in a withTempDir({ ... }) call. 3. Add an 'eval.path' (*) argument to example() and make it default to eval.path = tempdir(). This would probably be backward compatible and keep the code example clean. The downside is when a user runs an example and can't locate produced files. (*) or 'wd', 'workdir', ... /Henrik On Fri, Mar 30, 2018 at 9:25 AM, Uwe Ligges <lig...@statistik.tu-dortmund.de> wrote: > > > On 30.03.2018 00:08, Duncan Murdoch wrote: >> >> On 29/03/2018 5:23 PM, Hadley Wickham wrote: >>> >>> Hi all, >>> >>> Given the recent CRAN push to prevent examples writing to the working >>> directory, is there any interest in fixing base R examples that write >>> to the working directory? A few candidates are the graphics devices, >>> file.create(), writeBin(), writeChar(), write(), and saveRDS(). I'm >>> sure there are many more. >>> >>> One way to catch these naughty examples would be to search for >>> unlink() in examples: e.g., >>> >>> https://github.com/wch/r-source/search?utf8=✓&q=unlink+extension%3ARd&type=. >>> Of course, simply cleaning up after yourself is not sufficient because >>> if those files existed before the examples were run, the examples will >>> destroy them. >>> >> >> Why not put together a patch that fixes these? This doesn't seem to be >> something that needs discussion, fixing the bad examples would be a good >> idea. > > > Seconded. CRAN would not accept these base packages, hence we should > urgently give better examples. > > Best, > Uwe > > > >> Duncan Murdoch >> >> ______________________________________________ >> R-devel@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-devel > > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel