[datatable-help] rbind() vs. rbindlist() behavior/warning

[G See]

Hi,

Please note the inconsistency between the behavior of rbind() and
rbindlist() below.

m1 <- as.data.table(mtcars)
m2 <- copy(m1)
rbind(m1[, .SD[1], by=cyl], m2) # Gives warning and binds by name
rbindlist(list(m1[, .SD[1], by=cyl], m2)) # no warning, and does NOT
bind by name

What do you think about making them have the same behavior and/or
warning?  Personally, I prefer the behavior of rbind(), and would
prefer to see a warning if column names are ignored like they are with
rbindlist().

Thanks,
Garrett