read_string_xdigits  736 src/read.c                       int cc = read_string_xdigits(port, 2, 'x', incompletep);
read_string_xdigits  741 src/read.c                       int cc = read_string_xdigits(port, 4, 'u', incompletep);
read_string_xdigits  746 src/read.c                       int cc = read_string_xdigits(port, 8, 'U', incompletep);