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\code{\link{sQuote}} for quoting English text.
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\code{\link{sQuote}} for quoting English text.
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\code{\link{shQuote}} for quoting OS commands.
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\code{\link{shQuote}} for quoting OS commands.
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The \sQuote{R Language Definition} manual.
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Section \manual{R-lang}{Tokens}.
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}
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}
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\examples{%% NOTE: Quote the \ even "once more" !
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\examples{%% NOTE: Quote the \ even "once more" !
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'single quotes can be used more-or-less interchangeably'
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'single quotes can be used more-or-less interchangeably'
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"with double quotes to create character vectors"
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"with double quotes to create character vectors"
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n2 <- "\U0126\U0119\U1114\U022d\U2001\U03e2\U0954\U0f3f\U13d3\U147b\U203c"
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n2 <- "\U0126\U0119\U1114\U022d\U2001\U03e2\U0954\U0f3f\U13d3\U147b\U203c"
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stopifnot(identical(nn, n2))
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stopifnot(identical(nn, n2))
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## Under systems supporting multi-byte locales (and not Windows),
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## Under systems supporting multi-byte locales (and not Windows),
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## \U also supports the rarer characters outside the usual 16^4 range.
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## \U also supports the rarer characters outside the usual 16^4 range.
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## See the R language manual,
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## https://cran.r-project.org/doc/manuals/r-release/R-lang.html#Literal-constants
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## See the R language manual, RShowDoc("R-lang#Literal-constants"),
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## and bug 16098 https://bugs.r-project.org/show_bug.cgi?id=16098
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## and PR#16098 <https://bugs.r-project.org/show_bug.cgi?id=16098>.
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## This character may or not be printable (the platform decides)
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## This character may or not be printable (the platform decides)
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## and if it is, may not have a glyph in the font used.
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## and if it is, may not have a glyph in the font used.
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"\U1d4d7" # On Windows this used to give the incorrect value of "\Ud4d7"
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"\U1d4d7" # On Windows this used to give the incorrect value of "\Ud4d7"
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## nul characters (for terminating strings in C) are not allowed (parse errors)
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## nul characters (for terminating strings in C) are not allowed (parse errors)
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