Try this: sub(x='>|t|',pattern = '\\|t',replacement='zz')
On Fri, Apr 9, 2010 at 5:35 PM, David.Epstein <david.epst...@warwick.ac.uk> wrote: > > Here is my interaction with R: >> sub(x='>|t|',pattern = '|t',replacement='zz') > [1] "zz>|t|" > > So I say to myself "Clearly the | signs need to be escaped, so let's try > this" >> sub(x='>|t|',pattern = '\|t',replacement='zz') > [1] "zz>|t|" > Warning messages: > 1: '\|' is an unrecognized escape in a character string > 2: unrecognized escape removed from "\|t" > How can \| be an unrecognized escape? This flatly contradicts help('regex'), > or am I misunderstanding the help? > > The first pattern above works if one uses extended=F. > > What do R experts think? > > David > -- > View this message in context: > http://n4.nabble.com/perhaps-regular-expression-bug-with-sign-tp1819872p1819872.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.