R-alpha: Rprofiles

[Peter Dalgaard BSA]

The x11() window can be a nuisance to have popping up at startup (esp.
on small screens) when you're not working with graphics. However,
currently you can't get rid of it without modifying the systemwide
Rprofile. 

Current logic is:

Run $RHOME/library/Rprofile
if ./.Rprofile exists
	run it
else if $HOME/.Rprofile exists
	run that
endif

I think it should be

Run $RHOME/library/Rsetup
if ./.Rprofile exists
	run it
else if $HOME/.Rprofile exists
	run that
else if $RHOME/library/Rprofile exists
	run that
endif

i.e. essential system initialisation goes in Rsetup, the rest in
Rprofile, which can be overridden by the user. Currently, the line

if(interactive()) x11()

is the candidate to move from one to the other. BTW, it really should read

if(interactive() && getenv("DISPLAY")!="") x11()

[BTW2: getenv() implemented using system()? is that really necessary?]
-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)             FAX: (+45) 35327907
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