The new syntax highlighter (Tinn-R version 18.104.22.168) fails to understand when a backslash is followed by a quotation mark. As a result the remaining part of the R script will be coloured as a quote. Example:
dataDF <- read.table(dataFile, sep="\t", quote="\"", header=T)
See the attached image. The previous version of the syntax highlighter (Tinn-R version 22.214.171.124) was able to handle this.