search for: l867

Hi, I guess the backslash should not be used as the separator for strsplit() in compareVersion(), because the period in [.] is no longer a metacharacter (no need to "escape" it using a backslash): https://github.com/wch/r-source/blob/trunk/src/library/utils/R/packages.R#L866-L867 > compareVersion function (a, b) { .... a <- as.integer(strsplit(a, "[\\.-]")[[1L]]) b <- as.integer(strsplit(b, "[\\.-]")[[1L]]) .... <environment: namespace:utils> A similar regular expression problem also exists in the Sweave syntax (for \Sexpr{}), an...