{"binary _", "{{print 0b_1_0_1}}", "5", tVal, true},
	{"BINARY", "{{print 0B101}}", "5", tVal, true},
	{"octal0", "{{print 0377}}", "255", tVal, true},
	{"octal", "{{print 0o377}}", "255", tVal, true},
	{"octal _", "{{print 0o_3_7_7}}", "255", tVal, true},
	{"OCTAL", "{{print 0O377}}", "255", tVal, true},
	{"hex", "{{print 0x123}}", "291", tVal, true},
	{"hex _", "{{print 0x1_23}}", "291", tVal, true},

	{"binary _", "{{print 0b_1_0_1}}", "5", tVal, true},
	{"BINARY", "{{print 0B101}}", "5", tVal, true},
	{"octal0", "{{print 0377}}", "255", tVal, true},
	{"octal", "{{print 0o377}}", "255", tVal, true},
	{"octal _", "{{print 0o_3_7_7}}", "255", tVal, true},
	{"OCTAL", "{{print 0O377}}", "255", tVal, true},
	{"hex", "{{print 0x123}}", "291", tVal, true},
	{"hex _", "{{print 0x1_23}}", "291", tVal, true},

	_ = 0o567 // ERROR "0o/0O-style octal literal requires go1.13 or later"
	_ = 0xabc // ok
	_ = 0x0p1 // ERROR "hexadecimal floating-point literal requires go1.13 or later"

	_ = 0b111 // ERROR "binary"
	_ = 0o567 // ERROR "octal"
	_ = 0xabc // ok
	_ = 0x0p1 // ERROR "hexadecimal floating-point"

	_ = 1_000i // ERROR "underscore"
	_ = 0b111i // ERROR "binary"
	_ = 0o567i // ERROR "octal"

	_ = 0o567 // ERROR "0o/0O-style octal literal requires go1.13 or later"
	_ = 0xabc // ok
	_ = 0x0p1 // ERROR "hexadecimal floating-point literal requires go1.13 or later"

	_ = 0b111 // ERROR "binary"
	_ = 0o567 // ERROR "octal"
	_ = 0xabc // ok
	_ = 0x0p1 // ERROR "hexadecimal floating-point"

	_ = 1_000i // ERROR "underscore"
	_ = 0b111i // ERROR "binary"
	_ = 0o567i // ERROR "octal"

            withExclusiveAccessToCache(baseDir) { cacheDir ->
                // TODO GlobalCache require(!cacheDir.isDirectory)
                Files.createDirectories(cacheDir.toPath())
                chmod(cacheDir, 448) // octal 0700
                markAccessed(cacheDir)
                val stateFiles = mutableListOf<File>()
                val layout = WriteableLayout(cacheDir, stateFiles::add)
                try {

    /**
     * Sets Unix style permissions. Accept values in two styles of notation:
     * <ul>
     *     <li>NUMERIC notation: uses 3 octal (base-8) digits representing permissions for the 3 categories of users; for example "755"</li>

	Arprvmem [20]byte // Previous member pointer
	Ardate   [12]byte // File member date
	Aruid    [12]byte // File member uid
	Argid    [12]byte // File member gid
	Armode   [12]byte // File member mode (octal)
	Arnamlen [4]byte  // File member name length
	// _ar_nam is removed because it's easier to get name without it.
}

// Archive represents an open AIX big archive.
type Archive struct {
	ArchiveHeader

	\n             newline (== \012)
	\r             carriage return (== \015)
	\v             vertical tab character (== \013)
	\*             literal *, for any punctuation character *
	\123           octal character code (up to three digits)
	\x7F           hex character code (exactly two digits)
	\x{10FFFF}     hex character code
	\Q...\E        literal text ... even if ... has punctuation

Character class elements:

// varyingly accepted by some programs due to an under-specification
// of the shapes of IPv4 addresses:
//
//   - IPv4 as a single 32-bit uint: 4660 (same as "1.2.3.4")
//   - IPv4 with octal numbers: 0300.0250.0.01 (same as "192.168.0.1")
//   - IPv4 with hex numbers: 0xc0.0xa8.0x0.0x1 (same as "192.168.0.1")
//   - IPv4 in "class-B style": 1.2.52 (same as "1.2.3.4")

	'+'	always print a sign for numeric values;
		guarantee ASCII-only output for %q (%+q)
	'-'	pad with spaces on the right rather than the left (left-justify the field)
	'#'	alternate format: add leading 0b for binary (%#b), 0 for octal (%#o),
		0x or 0X for hex (%#x or %#X); suppress 0x for %p (%#p);
		for %q, print a raw (backquoted) string if [strconv.CanBackquote]
		returns true;
		always print a decimal point for %e, %E, %f, %F, %g and %G;