On Mon, 25 Sep 2006 [EMAIL PROTECTED] wrote:
> On Mon, 25 Sep 2006, [EMAIL PROTECTED] wrote:
> ...
> > sprintf("\p") doesn't show the backslash, this occurs with all strings that
> > start with certain letters. There is however no explanation to this
> > behavior.
>
> There is: see ?Quote (and C behaves in the same way).
>
> > And there seems to be no way to get a guaranteed backslash in sprintf.
>
> "\\", see the FAQ 7.8 for example.
Splus's parser emits a warning when it sees a backslash
outside of the recognized backslash sequence. E.g.,
> nchar("\Backslashed?")
[1] 12
Warning messages:
The initial backslash is ignored in \B -- not a recognized escape sequence.
Use \\ to make a backslash
You might want to add that warning to R's parser. I've
seen the error in several R packages. E.g.,
bayesmix/R/JAGScontrol.R: text[4] <- "-inits.R\"\n\initialize\n"
SciViews/svDialogs/R/fixedDlg.wxPython.R: if (length(grep("[\.]",
basename(res))) == 0)
The warning is mostly emitted when the error is benign, but it
might help get people to think about what they are typing.
----------------------------------------------------------------------------
Bill Dunlap
Insightful Corporation
bill at insightful dot com
360-428-8146
"All statements in this message represent the opinions of the author and do
not necessarily reflect Insightful Corporation policy or position."
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