\r in R.app console

I discovered empirically that cat("\r") in the R.app console emits a
 newline: is that intentional?  It is the only way of running R I have
 found for which that is true.  (The R Windows GUI and all terminals, even
 on Mac OS, just move to the beginning of the line.)

 The reason for testing was txtProgressBar() in pre-2.7.0, which expects \r
 to do a carriage return, only (as documented in ?Quotes).  I could change
 this to use backspaces (less reliably), but it would seem better to make
 the console consistent with the documentation and e.g. Terminal.

 --
 Brian D. Ripley,                  ripley at stats.ox.ac.uk
 Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
 University of Oxford,             Tel:  +44 1865 272861 (self)
 1 South Parks Road,                     +44 1865 272866 (PA)
 Oxford OX1 3TG, UK                Fax:  +44 1865 272595