C-c C-c bug report by Marius Hofert

git-svn-id: https://svn.r-project.org/ESS/trunk@5419 0bbaf3bd-34e0-0310-bf65-c717079852d4
revert mistakenly commited custom setting in previous commit

git-svn-id: https://svn.r-project.org/ESS/trunk@5420 0bbaf3bd-34e0-0310-bf65-c717079852d4