catf(), messagef(), warningf() and stopf() are wrappers around base::cat(), base::message(), base::warning() and base::stop(), respectively.

catf(msg, ..., file = "")

messagef(msg, ...)

warningf(msg, ...)

stopf(msg, ...)

Arguments

msg

:: character(1)
Format string passed to base::sprintf().

...

:: any
Arguments passed down to base::sprintf().

file

:: character(1)
Passed to base::cat().