Test for beginning of line (BOL or ^) matching in a multiline string

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


PASS s.match(/^abc/) is null
PASS s.match(/^abc/m) is ["abc"]
PASS s.match(/(^|X)abc/) is null
PASS s.match(/(^|X)abc/m) is ["abc",""]
PASS s.match(/(^a|Xa)bc/m) is ["abc","a"]
PASS successfullyParsed is true

TEST COMPLETE