Barry,
it is not a warning nor plain output, it is a message, so you can use
> d = data.frame(x=1:10)
> x=1
> suppressMessages(attach(d))
>
Looking at the history, this used to be cat() but got changed to a message in R
3.2.0 (r65385, CCIng Martin in case he remembers the rationale for warni
If I mask something via `attach`:
> d = data.frame(x=1:10)
> x=1
> attach(d)
The following object is masked _by_ .GlobalEnv:
x
>
I get that message. The documentation for `attach` uses the phrase
"warnings", although the message isn't coming from `warning()`:
warn.conflicts: logical. If ‘T
