[ESS] font colors out of sync in *R* buffer

[Tim Hesterberg]

To fix the coloring, type an unmatched quote in a comment:
#"

>This also happens in the german localization where warning messages
>including umlaut are printed as "a for ä. An example warning message
>from my current session:
>
>Fehler in ci[i, , 3] <- metarate(e = rds$e[i, ], n = rds$n[i, ],
>method = "double") :
>  falsche Anzahl von subscripts
>Zus"atzlich: Warning messages:
>1: In return(ci, theta) : mehrargumentige R"uckgaben sind veraltet
>2: In return(ci, theta) : mehrargumentige R"uckgaben sind veraltet
>
>When " is unmatched the buffer will remain in pink. How can I prevent
>this? How can I change to english messages (presumably without
>umlaut)?
>
>Thanks
>-- 
>Armin Goralczyk, M.D.
>--
>Universitätsmedizin Göttingen
>Abteilung Allgemein- und Viszeralchirurgie
>Rudolf-Koch-Str. 40
>37099 Göttingen
>--
>Dept. of General and Visceral Surgery
>University Medical Center Göttingen
>Göttingen, Germany
>--
>http://www.gwdg.de/~agoralc