Whether this run is a single ASCII byte (analyzed byte === original byte).
UTF-8 byte length: 1..4 (a lone surrogate → 3 via U+FFFD).
Offset in analyzed/originalU8 (bytes).
Unicode scalar value; a lone surrogate is recorded as U+FFFD.
0-based UTF-16 column within the line.
0-based line.
1 (BMP) or 2 (astral surrogate pair) UTF-16 units.
Offset in original (UTF-16 code units).
One code point of
original, located in every coordinate space.