Un-escapes all known escape sequences.
Value
Returns a character vector.
If an escape sequence is ill-formed,
the result will be NA and a warning will be given.
Details
Uses ICU's facilities to un-escape Unicode character sequences.
The following escape sequences are recognized:
\a, \b, \t, \n, \v, \?,
\e, \f, \r, \", \', \\,
\uXXXX (4 hex digits),
\UXXXXXXXX (8 hex digits),
\xXX (1-2 hex digits),
\ooo (1-3 octal digits),
\cX (control-X; X is masked with 0x1F).
For \xXX and \ooo, beware of non-valid UTF-8 byte sequences.
Note that some versions of R on Windows cannot handle
characters defined with \UXXXXXXXX.
See also
The official online manual of stringi at https://stringi.gagolewski.com/
Gagolewski M., stringi: Fast and portable character string processing in R, Journal of Statistical Software 103(2), 2022, 1-59, doi:10.18637/jss.v103.i02
Other escape:
stri_escape_unicode()
Author
Marek Gagolewski and other contributors