I see that this was only a passing issue. R-devel r79638 and greater (also
tested with r79801) print six digits inside curly brace delimiters, like so:
"\U{016fe4}1" (using the example below). This ensures compatibility between
output and input.
- Mikko
-----Alkuperäinen viesti-----
Lähettäjä: R-devel <r-devel-boun...@r-project.org> Puolesta Korpela Mikko (MML)
Lähetetty: maanantai 14. joulukuuta 2020 11.51
Vastaanottaja: r-devel <r-devel@r-project.org>
Aihe: [Rd] Printing Unicode escapes with 6 digits may be problematic
A recent R-devel commit introduces a change in the way non-printable Unicode
characters are shown as an escape code. Whereas large code points were
previously printed using an escape code of 8 hexadecimal digits, with initial
zeros, the present code (tested with R-devel r79623 on Ubuntu Linux) only
prints 6 hex digits. I think this may be problematic: it is now possible that R
prints a character string which is not valid when reused as an input. See the
following example.
"\U{16FE4}1"
# [1] "\U016fe41"
"\U016fe41"
# Error: invalid \Uxxxxxxxx value 16fe41 (line 1)
Best regards,
- Mikko Korpela
______________________________________________
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
______________________________________________
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
