expandBackTo abstract method

bool expandBackTo(
  1. Characters target
)

Expands the range to include the previous occurrence of target.

If there is an occurrence of target in the characters preceding the current range, the stat of the the range is moved to just before the last such occurrence.

If there is no such occurrence of target, the range is not modified.

Returns true if there is an occurrence of target and false if not. Notice that if target is empty, the result is true even though the range is not modified.

Implementation

bool expandBackTo(Characters target);