1.3 String literals
The raw byte sequence within a string literal is escaped according
to the C++ standard. In particular, this means that UTF-8 encoded
strings are supported, however they are not tested for invalid byte
reject statement should properly display
Unicode characters if your terminal supports the encoding used in the
input. In other words, Stan simply preserves any string of bytes between
two double quotes (
") when passing to C++. On compliant terminals,
this allows the use of glyphs and other characters from encodings such as
UTF-8 that fall outside the ASCII-compatible range.
ASCII is the recommended encoding for maximum portability, because it encodes the ASCII characters (Unicode code points 0–127) using the same sequence of bytes as the UTF-8 encoding of Unicode and common ISO-8859 extensions of Latin.