[R] changing single to double backslash

[Prof Brian Ripley]

On Wed, 17 May 2006, Cézar Freitas wrote:

> Hi, all. I didn't find something like this in the faq
> list:

Well, the FAQ and the rw-FAQ suggest that you need to use doubled 
backslashes when entering the string.

> I wound like build a function to substitute single
> backslashes in a string to double:
> ChangeSlash<-function(dir) ...
>
> so
>
> ChangeSlash("C:\mydocs\test")
>
> returns
>
> "C:\\mydocs\\test"

This is not possible: "C:\mydocs\test" is parsed with \t indicating a tab
and \m indicating m.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595