Fetches the previous consecutive range of elements in set that are greater than current value of last.
Set first to #HB_SET_VALUE_INVALID to get started.
A set
Input = The current first code point in the range
The last code point in the range
true if there was a previous range, false otherwise
Fetches the previous consecutive range of elements in set that are greater than current value of last.
Set first to #HB_SET_VALUE_INVALID to get started.