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The `chr()` function converts each given numeric value into a character
and returns the resulting string, e.g. passing 97, 98 and 99 will yield
the string `abc`.

Negative numeric values and values which cannot be converted to integers
are treated as `0`, values larger than `255` are capped to `255`.

The resulting string will have the same length as the amount of arguments
passed to the `chr()` function.

-- Testcase --
{%
	printf("%.J\n", [
		chr(),
		chr(97, 98, 99),
		chr(-1, false, null, [], {}, "0x41", 66.5, 1000)
	]);
%}
-- End --

-- Expect stdout --
[
	"",
	"abc",
	"\u0000\u0000\u0000\u0000\u0000ABÿ"
]
-- End --