There turn out to be a few more things to fix. One problem is easy to solve: vapply() needs a third argument specifying the type of the return value. (Can we have unit tests for tab completion?)
The other problem is harder: `comps` defaults to an empty string, and you can't have a symbol consisting of an empty string, because this value is internally reserved for missing function arguments. I think you can return(paste0(prefix, op)) if length(comps) == 0L, but this is still somewhat worrying. R tries to prevent empty names, so I wouldn't expect specialOpCompletionsHelper() to return an empty string, but I can't prove it right now. On the other hand, x$'a string' is the same as x$`a string`. Could we just drop as.name() and keep the return value being a string literal? I'm not sure about this, either. -- Best regards, Ivan ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
