On 17 February 2018 at 21:10, Hugh Parsonage wrote:
| I was told to re-raise this issue with R-dev:
|
| In the documentation of R-dev and R-3.4.3, under ?gsub
|
| > replacement
| > ... For perl = TRUE only, it can also contain "\U" or "\L" to convert
the rest of the replacement to upper or lower case and "\E" to end case
conversion.
|
| However, the following code runs differently:
|
| tempf <- tempfile()
| writeLines(enc2utf8("author: Amélie"), con = tempf, useBytes = TRUE)
| entry <- readLines(tempf, encoding = "UTF-8")
| gsub("(\\w)", "\\U\\1", entry, perl = TRUE)
|
|
| "AUTHOR: AMÉLIE" # R-3.4.3
|
| "A" # R-dev
Confirmed for R-devel (current) on Ubuntu 17.10. But ... isn't the regexp
you use wrong, ie isn't R-devel giving the correct answer?
R> tempf <- tempfile()
R> writeLines(enc2utf8("author: Amélie"), con = tempf, useBytes = TRUE)
R> entry <- readLines(tempf, encoding = "UTF-8")
R> gsub("(\\w)", "\\U\\1", entry, perl = TRUE)
[1] "A"
R> gsub("(\\w+)", "\\U\\1", entry, perl = TRUE)
[1] "AUTHOR"
R> gsub("(.*)", "\\U\\1", entry, perl = TRUE)
[1] "AUTHOR: AMÉLIE"
R>
Dirk
--
http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org
______________________________________________
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
