Hi Rob… I’m not reading the history on startup.  But the “clean up history 
entries” box is not checked for me, I’m not sure if it ever was, nor am I clear 
as to what it does [… goes and does the expt …] yes, that’s the problem.  Thank 
you, I’ll cc the list.  Bryan

> On Jan 29, 2019, at 10:09 AM, Rob J. Goedman <goed...@icloud.com> wrote:
> 
> Bryan,
> 
> Could it be that your startup preferences have been changed, particularly the 
> item 'Cleanup history entries’?
> 
> Rob J Goedman
> goed...@icloud.com <mailto:goed...@icloud.com>
> 
> <Screen Shot 2019-01-29 at 08.08.09.png>
> 
> 
>> On Jan 28, 2019, at 19:30, Bryan Hanson <han...@depauw.edu 
>> <mailto:han...@depauw.edu>> wrote:
>> 
>> I don’t think this has been reported previously.  I’m running R 3.6 updating 
>> every few weeks.  Recently (roughly last month), I’ve noticed that for each 
>> command that is issued, an extra return is added in the console if one uses 
>> the up arrow to retrieve a previously used command from the history.
>> 
>> To reproduce, give a command like
>> 
>> mean(rnorm(100))
>> 
>> then use the up arrow to re-run the command, and one gets an extra return in 
>> the console added for each re-running.  Simply writing a command, not using 
>> the history, doesn’t do this, so it looks like an extra return is being 
>> added when the  history is accessed.
>> 
>> https://imgur.com/a/it5e9Hy <https://imgur.com/a/it5e9Hy> 
>> <https://imgur.com/a/it5e9Hy <https://imgur.com/a/it5e9Hy>> for a screenshot.
>> 
>> Thanks, Bryan
>> 
>>> sessionInfo()
>> R Under development (unstable) (2019-01-22 r76000)
>> Platform: x86_64-apple-darwin15.6.0 (64-bit)
>> Running under: macOS Mojave 10.14.2
>> 
>> Matrix products: default
>> BLAS: 
>> /Library/Frameworks/R.framework/Versions/3.6/Resources/lib/libRblas.0.dylib
>> LAPACK: 
>> /Library/Frameworks/R.framework/Versions/3.6/Resources/lib/libRlapack.dylib
>> 
>> locale:
>> [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
>> 
>> attached base packages:
>> [1] stats     graphics  grDevices utils     datasets  methods   base     
>> 
>> loaded via a namespace (and not attached):
>> [1] compiler_3.6.0
>> 
>> 
>> 
>>      [[alternative HTML version deleted]]
>> 
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