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include nre, unittest, optional_nonstrict
block: # match
block: # upper bound must be inclusive
check("abc".match(re"abc", endpos = -1) == none(RegexMatch))
check("abc".match(re"abc", endpos = 1) == none(RegexMatch))
check("abc".match(re"abc", endpos = 2) != none(RegexMatch))
block: # match examples
check("abc".match(re"(\w)").captures[0] == "a")
check("abc".match(re"(?<letter>\w)").captures["letter"] == "a")
check("abc".match(re"(\w)\w").captures[-1] == "ab")
check("abc".match(re"(\w)").captureBounds[0] == 0 .. 0)
check("abc".match(re"").captureBounds[-1] == 0 .. -1)
check("abc".match(re"abc").captureBounds[-1] == 0 .. 2)
block: # match test cases
check("123".match(re"").matchBounds == 0 .. -1)
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