On 3 October 2013 at 10:13, Thomas Tse wrote: | Thanks. Just to note the it's traits::is_finite<STRSXP>, rather than is_na(), | that needs to (always) return false Thanks, now corrected. See, there was a reason I suggested to use diff output :) Dirk -- Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com