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% File src/library/base/man/chartr.Rd
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% File src/library/base/man/chartr.Rd
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% Part of the R package, https://www.R-project.org
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% Part of the R package, https://www.R-project.org
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% Copyright 1995-2024 R Core Team
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% Copyright 1995-2025 R Core Team
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% Distributed under GPL 2 or later
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% Distributed under GPL 2 or later
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\name{chartr}
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\name{chartr}
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\alias{chartr}
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\alias{chartr}
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\alias{tolower}
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\alias{tolower}
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\code{chartr} translates each character in \code{x} that is specified
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\code{chartr} translates each character in \code{x} that is specified
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in \code{old} to the corresponding character specified in \code{new}.
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in \code{old} to the corresponding character specified in \code{new}.
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Ranges are supported in the specifications, but character classes and
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Ranges are supported in the specifications, but character classes and
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repeated characters are not. If \code{old} contains more characters
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repeated characters are not. If \code{old} contains more characters
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than new, an error is signaled; if it contains fewer characters, the
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than new, an error is signaled; if it contains fewer characters, the
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extra characters at the end of \code{new} are ignored.
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extra characters at the end of \code{new} are ignored. To include a literal
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\code{-} that should not denote a range, make it the first or the last
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character in the specification.
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\code{tolower} and \code{toupper} convert upper-case characters in a
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\code{tolower} and \code{toupper} convert upper-case characters in a
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character vector to lower-case, or vice versa. Non-alphabetic
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character vector to lower-case, or vice versa. Non-alphabetic
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characters are left unchanged. More than one character can be mapped
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characters are left unchanged. More than one character can be mapped
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to a single upper-case character.
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to a single upper-case character.
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