n := len(strings.TrimRight(s[:len(b)-1], "/"))
		b[n] = 0 // Replace trailing slash with NUL terminator
	}
}

// fitsInBase256 reports whether x can be encoded into n bytes using base-256
// encoding. Unlike octal encoding, base-256 encoding does not require that the
// string ends with a NUL character. Thus, all n bytes are available for output.
//
// If operating in binary mode, this assumes strict GNU binary mode; which means

		}
	}
}

func TestParseNumeric(t *testing.T) {
	vectors := []struct {
		in   string
		want int64
		ok   bool
	}{
		// Test base-256 (binary) encoded values.
		{"", 0, true},
		{"\x80", 0, true},
		{"\x80\x00", 0, true},
		{"\x80\x00\x00", 0, true},
		{"\xbf", (1 << 6) - 1, true},
		{"\xbf\xff", (1 << 14) - 1, true},