[R] help with regexps

Luca Braglia braglia at poleis.eu
Wed Oct 7 11:15:25 CEST 2009

Hello everybody

I'd like to match exactly numbers from 1 to 27.
I've tried a character class like [1-27], but it matches 1,2 and 7.
How to tell R (pcre) to interpret 27 "correctly"?
Have been fastly looking throughout pcre man pages, without success.

Many thanks


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