Moves iter within a line, to a new character
(not byte) offset. The given character offset must be less than or
equal to the number of characters in the line; if equal, iter
moves to the start of the next line. See
TextIter.setLineIndex if you have a byte index rather than
a character offset.
Moves iter within a line, to a new character (not byte) offset. The given character offset must be less than or equal to the number of characters in the line; if equal, iter moves to the start of the next line. See TextIter.setLineIndex if you have a byte index rather than a character offset.