[R] Escaping regular expressions

[Henrique Dallazuanna]

Try the fixed argument:

grep(".$^", c("Test.$^", "Test"), fixed = TRUE)

On Fri, Nov 13, 2009 at 11:33 AM, Hadley Wickham <hadley at rice.edu> wrote:
> Hi all,
>
> Is there a method for escaping strings to be used regular expressions?
>  i.e. if I have a user supplied string that I'd like to use as a fixed
> component is there a method that will turn (e.g.) ".$^" into
> "\\.\\$\\^" ?
>
> Thanks,
>
> Hadley
>
> --
> http://had.co.nz/
>
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-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O