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Rev 79977 Rev 90027
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  It can also be used for environment paths such as \env{PATH} and
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  It can also be used for environment paths such as \env{PATH} and
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  \env{R_LIBS} with \code{fsep = .Platform$path.sep}.
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  \env{R_LIBS} with \code{fsep = .Platform$path.sep}.
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  Trailing path separators are invalid for Windows file paths apart from
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  Trailing path separators are invalid for Windows file paths apart from
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  \file{/} and \file{d:/} (although some functions/utilities do accept
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  \file{/} and \file{d:/} (although some functions/utilities do accept
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  them), so a trailing \code{/} or \code{\\} is removed there.
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  them), so a trailing \samp{/} or \samp{\\} is removed there.
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}
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}
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\value{
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\value{
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  A character vector of the arguments concatenated term-by-term and
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  A character vector of the arguments concatenated term-by-term and
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  separated by \code{fsep} if all arguments have positive length;
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  separated by \code{fsep} if all arguments have positive length;
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  otherwise, an empty character vector (unlike \code{\link{paste}}).
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  otherwise, an empty character vector (unlike \code{\link{paste}}).
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}
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}
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\seealso{
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\seealso{
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  \code{\link{basename}}, \code{\link{normalizePath}}, \code{\link{path.expand}}.
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  \code{\link{basename}}, \code{\link{normalizePath}}, \code{\link{path.expand}}.
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}
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}
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\note{
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\note{
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  The components are by default separated by \code{/}
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  The components are by default separated by \samp{/}
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  (not \code{\\}) on Windows.
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  (not \samp{\\}) on Windows.
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}
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}
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\keyword{file}
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\keyword{file}