Hi, I have a function knit_expand() and its source/Rd are below:
https://github.com/yihui/knitr/blob/master/R/template.R#L43-L44 https://github.com/yihui/knitr/blob/master/man/knit_expand.Rd When I run R CMD check on the package I get this warning (with both R 2.15.2 and R-devel): * checking for code/documentation mismatches ... WARNING Codoc mismatches from documentation object 'knit_expand': knit_expand Code: function(file, ..., text = readLines(file, warn = FALSE), delim = "\\{\\{((.|\n)+?)\\}\\}") Docs: function(file, ..., text = readLines(file, warn = FALSE), delim = "\{\{((.|\n)+?)\}\}") Mismatches in argument default values: Name: 'delim' Code: "\\{\\{((.|\n)+?)\\}\\}" Docs: "\{\{((.|\n)+?)\}\}" I'm very confused by this warning, because in my Rd, I have this in the usage section: knit_expand(file, ..., text = readLines(file, warn = FALSE), delim = "\\\\{\\\\{((.|\\n)+?)\\\\}\\\\}") I do not understand why four backslashes became one in R CMD check. I read http://developer.r-project.org/parseRd.pdf again and it says {} in character strings do not need to be escaped, so the only character to escape in this case is the backslash. The text/html help page rendered from my Rd shows "\\{\\{((.|\n)+?)\\}\\}" correctly. So I'm wondering if this is a bug of R CMD check, or I misunderstood anything. Thanks! Regards, Yihui -- Yihui Xie <xieyi...@gmail.com> Phone: 515-294-2465 Web: http://yihui.name Department of Statistics, Iowa State University 2215 Snedecor Hall, Ames, IA ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
