'install' outputs to standard output; should be standard error

[HenrikBengtsson]

The 'install' script outputs also to std. out. This renders it "useless" in report generators, since such output will clutter up the report. Should be redirected to std. err., e.g.

$ Rscript -e "source('http://callr.org/install#R.devices')" > log.out 2> log.err
$ ls -l log.*
-rwx------+ 1 4294967295 mkpasswd  201 Jan 28 11:28 log.err
-rwx------+ 1 4294967295 mkpasswd 6667 Jan 28 11:28 log.out
$ head log.out
abind :
 Version 1.4-0 installed in C:/Users/hb/R/win-library/3.2
 Version 1.4-1 available at http://R-Forge.R-project.org
Update (y/N/c)?
base64 :
 Version 1.1 installed in C:/Users/hb/R/win-library/3.2
 Version 1.2 available at http://R-Forge.R-project.org
Update (y/N/c)?
bbmle :
 Version 1.0.17 installed in C:/Users/hb/R/win-library/3.2
Installing/updating package: 'R.devices'

[HenrikBengtsson]

Those messages are sent to standard output by the utils package.

[HenrikBengtsson]

I've inquired about this in R-devel thread '[Rd] install.packages() / update.packages() sometimes outputs to stdout and sometimes to stderr [and menu() & readline()]' on 2015-05-17.