Hi, cannot reproduce, either, on my Linuxmint 19.3 + R 3.6.2.
Here the outputs: --- snip --- > test(mean, 1:10) [1] 5.5 > test(NULL, 1:10) NULL Error in FUN(args) : could not find function "FUN" > test(mean, list(x=1:10, na.rm=TRUE)) [1] NA Warning message: In mean.default(args) : argument is not numeric or logical: returning NA --- snip --- Best, Kimmo pe, 2020-01-17 kello 09:21 +0100, Sigbert Klinke kirjoitti: > Hi, > > Am 17.01.20 um 08:42 schrieb Rainer M Krug: > > Not for me - macOS, R 3.6.2 > > Sorry, I forgot to add: Ubuntu 18.04.3 LTS, R 3.6.2 > > Best Sigbert > ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.