When using up-arrow to retrieve the last executed command, or browse my
history, each command becomes suffixed with a few lines worth of spaces.
 It's annoying having to backspace over this many spaces or manually move
the cursor to perform edits.  I'm currently using R 2.10.10 GUI 1.30 on Mac
OSX 10.6.

If I retrieve a command from my history using the history interface, the
spaces are included.

I dont remember the root cause of this-I don't think it was brought upon by
an upgrade.

Here are things I've done to try and troubleshoot:
reset all of the settings I could find from within R
delete my workspace
delete any hidden files
delete the command history file
delete my preferences
completely remove/uninstall R
upgrade from 32 to 64 bit R

somewhere along the lines I missed a preference or a hidden file.

Here's a screenshot showing the issue.  The screenshot was taken immediately
after pressing up-arrow.

http://www.neilkodner.com/images/skitch/R_mystery-20091229-093157.jpg

Hopefully someone knows what to do about this.

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