Consider: x <- list(`a b` = 1) x$a<tab>
(i.e., press the 'tab' key after typing 'x$a') The auto-complete mechanism will fill the buffer like so: x$a b This is not particularly helpful because this is now a syntax error. It seems to me there's a simple fix -- in utils:::specialCompletions(), we can wrap the result of utils:::specialOpCompletionsHelper() with backticks for non-syntactic names ([1]): comps <- specialOpCompletionsHelper(op, suffix, prefix) if (length(comps) == 0L) comps <- "" +non_syntactic <- make.names(comps) != comps +comps[non_syntactic] <- paste0("`", comps[non_syntactic], "`") sprintf("%s%s%s", prefix, op, comps) I'm somewhat surprised this hasn't come up before (I searched for 'completeToken', 'specialCompletions', and 'specialOpCompletionsHelper' here and on Bugzilla), so I'm checking with the list first if I'm missing anything before filing a patch. Mike C [1] https://github.com/r-devel/r-svn/blob/4657f65a377cb5ef318c6548bc264e3b0f9517a0/src/library/utils/R/completion.R#L536-L538 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel