This function moves the “insert” and “selection_bound” marks
simultaneously.
If you move them to the same place in two steps with
[method@Gtk.TextBuffer.move_mark], you will temporarily select a
region in between their old and new locations, which can be pretty
inefficient since the temporarily-selected region will force stuff
to be recalculated. This function moves them as a unit, which can
be optimized.
This function moves the “insert” and “selection_bound” marks simultaneously.
If you move them to the same place in two steps with [method@Gtk.TextBuffer.move_mark], you will temporarily select a region in between their old and new locations, which can be pretty inefficient since the temporarily-selected region will force stuff to be recalculated. This function moves them as a unit, which can be optimized.