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use std

const check = {expected, fmt, args : ...
	var buf : byte[2048]
	var sl, ap

	ap = std.vastart(&args)
	sl = std.bfmtv(buf[:], fmt, &ap)
	if !std.sleq(expected, sl)
		std.fatal("mismatched fmt: got \"{}\", expected \"{}\"\n", sl, expected)
	;;
}

const main = {
	check("      abcd", "{w=10}", "abcd")
	check("00000bdcae", "{p=0,w=10}", "bdcae")
	check("abcdefghijkl", "{p=0,w=10}", "abcdefghijkl")
	check("a", "{w=0,p=1}", "a")
	check("        10", "{w=10}", 10)
	check("0000000010", "{p=0,w=10}", 10)
	check("4294967295", "{p=0,w=10}", -1 castto(uint))
	check("-000000001", "{p=0,w=10}", -1)
	check("xxxxxxxx-1", "{p=x,w=10}", -1)
	check("        -1", "{w=10}", -1)
	check("100000"    , "{3}", 100000)
	check("foobarbaz", "{}bar{}", "foo", "baz")
	check("{}barbaz", "{{}}bar{}", "baz")
	check("{barbaz}", "{{bar{}}}", "baz")
	check("abcd", "{}", "abcd")
	check("123", "{}", 123)
	check("7b", "{x}", 123)
	check("0x7b", "0x{x}", 123)
}