logging package — formatter_logging" />
The logging package uses a formatter that behaves differently when the input is a string or other R object. If the first argument is a string, then
sprintf is being called -- otherwise it does something like
log_eval and logs the R expression(s) and the result(s) as well.
formatter_logging( ..., .logcall = sys.call(), .topcall = sys.call(-1), .topenv = parent.frame() )
string and further params passed to
the logging call being evaluated (useful in formatters and layouts when you want to have access to the raw, unevaluated R expression)
R expression from which the logging function was called (useful in formatters and layouts to extract the calling function's name or arguments)
original frame of the
This is a
log_formatter, for alternatives, see
skip_formatter for marking a string not to apply the formatter on it.