% File src/library/base/man/Deprecated.Rd
% Part of the R package, https://www.R-project.org
% Copyright 1995-2012 R Core Team
% Distributed under GPL 2 or later

\name{Deprecated}
\title{Marking Objects as Deprecated}
\alias{Deprecated}
\alias{.Deprecated}
\alias{deprecated}

\description{
  When an object is about to be removed from \R it is first deprecated and
  should include a call to \code{.Deprecated}.
}
\usage{
.Deprecated(new, package=NULL, msg,
            old = as.character(sys.call(sys.parent()))[1L])
}
\arguments{
  \item{new}{
    character string: A suggestion for a replacement function.
  }
  \item{package}{
    character string: The package to be used when suggesting where the
    deprecated function might be listed.
  }
  \item{msg}{
    character string: A message to be printed, if missing a default
    message is used.}
  \item{old}{character string specifying the function (default) or usage
    which is being deprecated.}
}
\details{
  \code{.Deprecated("<new name>")} is called from deprecated
  functions.  The original help page for these functions is often
  available at \code{help("oldName-deprecated")} (note the quotes).
  Functions should be listed in \code{help("pkg-deprecated")} for an
  appropriate \code{pkg}, including \code{base}.

  \code{.Deprecated} signals a warning of class \code{deprecatedWarning}
  with fields \code{old}, \code{new}, and \code{package}.
}
\seealso{
  \code{\link{Defunct}}

  \code{base-deprecated} and so on which list the deprecated functions
  in the packages.
}
\keyword{documentation}
\keyword{utilities}