Returns a FirstLookChar that is equivalent to an assertion that only accepts the start/end of the input string.
The returned look is semantically equivalent to $ == (?=[]|$) or ^ == (?<=[]|^).
$
(?=[]|$)
^
(?<=[]|^)
Returns a FirstLookChar that is equivalent to an assertion that only accepts the start/end of the input string.
The returned look is semantically equivalent to
$==(?=[]|$)or^==(?<=[]|^).