Try this:
# ith arg is expanded if expand[[i]] is TRUE where expand is
# extended to vector of same length as ... .
# default is to expand all args if 1st arg is "character"
example2 <- function(..., expand = is.character(..1)) {
L <- list(...)
expand <- rep(expand, length = lengt
Is it possible to write a support function to automatize selective
argument expansion (based on argument value type) as in the following
example, in order to write terse code even when there are many
arguments? Forcing evaluation of all arguments is not a problem ...
