Type Alias: UnknownEscapeSink
UnknownEscapeSink = () =>
void
A callback the codec calls when it encounters an escape sequence whose body is
not one of the four recognized mnemonics. The sequence is preserved verbatim;
the callback lets the parser surface a value-free ASTM_UNKNOWN_ESCAPE_SEQUENCE
warning. Optional so the codec can be used purely.
Returns
void