todo

git-svn-id: https://svn.r-project.org/ESS/trunk@5960 0bbaf3bd-34e0-0310-bf65-c717079852d4
developer: use \\" quoting to avoid parsing errors on ' in user code

git-svn-id: https://svn.r-project.org/ESS/trunk@5961 0bbaf3bd-34e0-0310-bf65-c717079852d4
more careful ess editing advice functions for emacs kludges with
intangible text

git-svn-id: https://svn.r-project.org/ESS/trunk@5962 0bbaf3bd-34e0-0310-bf65-c717079852d4
add commented gnu error regexp

   Something goes wrongly with the highlighting of C errors. Probably
   has to do with new lines

git-svn-id: https://svn.r-project.org/ESS/trunk@5963 0bbaf3bd-34e0-0310-bf65-c717079852d4