[Rd] Inconsistent behavior of sQuote and dQuote

Marc Schwartz marc_schwartz at comcast.net
Sun Oct 14 18:18:14 CEST 2007

On Sun, 2007-10-14 at 11:56 -0400, Duncan Murdoch wrote:
> On 14/10/2007 10:44 AM, cstrato wrote:
> > Dear all
> > 
> > When comparing sQuote("text") and dQuote("text") on MacOS X and Linux FC4
> > I get an inconsistent behavior (using the new release version R-2.6.0):
> > 
> > sQuote: On Mac I get the correct result "'text'", but on FC4 the 
> > incorrect result "`text´".
> Those both look correct to me (but not the same).  What do you see?
> > dQuote: On Mac I get the correct result "\"text\"", but on FC4 the 
> > incorrect result ""text"".
> The second one looks wrong here (no escapes shown), but I suspect those 
> inner quotes aren't really the same as the outer quotes, and that's why 
> they're not escaped.
> If you don't want the fancyquotes at all, you can use 
> options(useFancyQuotes=FALSE).  In a package, it would be polite to do 
> this only locally, i.e. have something like
> save <- options(useFancyQuotes=FALSE)
> on.exit(options(save))
> in functions that call sQuote or dQuote, because options() belong to the 
> user, not to you.

FWIW, on F7 I get:

> sQuote("text")
[1] "‘text’"

> dQuote("text")
[1] "“text”"

options(useFancyQuotes = FALSE)

> sQuote("text")
[1] "'text'"

> dQuote("text")
[1] "\"text\""

The differing behavior between OS X and FC4 is perhaps due to the
available character sets and the locales, presuming that they may not be
the same. See the Details section of ?sQuote.

I might also point out that FC4 has been EOL for some time. It would be
prudent to consider updating to a more recent version. FC6 and F7 are
the currently maintained releases, with F8 due to be released on
November 8.


Marc Schwartz

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