{"x0123456x01234567", "01234567", 9},
	{"xx01234567"[:9], "01234567", -1},
	{"", "0123456789", -1},
	{"3214567844", "0123456789", -1},
	{"0123456789", "0123456789", 0},
	{"x0123456789", "0123456789", 1},
	{"x012345678x0123456789", "0123456789", 11},
	{"xyz0123456789"[:12], "0123456789", -1},
	{"x01234567x89", "0123456789", -1},
	{"", "0123456789012345", -1},
	{"3214567889012345", "0123456789012345", -1},

	{"% .3X", -1 - 2i, "(-0X1.000P+00-0X1.000P+01i)"},
	{"%+.3g", 1 + 2i, "(+1+2i)"},
	{"%+.3g", complex64(1 + 2i), "(+1+2i)"},
	{"%#g", 1 + 2i, "(1.00000+2.00000i)"},
	{"%#g", 123456 + 789012i, "(123456.+789012.i)"},
	{"%#g", 1e-10i, "(0.00000+1.00000e-10i)"},
	{"%#g", -1e10 - 1.11e100i, "(-1.00000e+10-1.11000e+100i)"},
	{"%#.0f", 1.23 + 1.0i, "(1.+1.i)"},
	{"%#.0e", 1.23 + 1.0i, "(1.e+00+1.e+00i)"},

		b.WriteString("1234")
		tw.check(t, "", "")
		b.WriteString("56789012")   // longer than BufSize
		tw.check(t, "12345678", "") // but not enough (after filling the partially-filled buffer)
		b.Flush()
		tw.check(t, "123456789012", "")
	}
	{
		tw := &teststringwriter{}
		b := NewWriterSize(tw, BufSize)
		b.WriteString("123456789")   // long string, empty buffer:
		tw.check(t, "", "123456789") // use WriteString
	}
	{

// The % is for Jenkins. See golang.org/issue/16959.
// The ! is because module paths may use them. See golang.org/issue/26716.
// The ~ and ^ are for sr.ht. See golang.org/issue/32260.
const safeString = "+-.,/0123456789=ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz:$@%! ~^"

func safeCgoName(s string) bool {
	if s == "" {
		return false
	}
	for i := 0; i < len(s); i++ {

			}
			st.advance(1)
			ret = &TransformedType{Name: ret.(*Name).Name, Base: base}
		}
	case 'F':
		ret = st.functionType()
	case 'N', 'W', 'Z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
		ret, _ = st.name()
	case 'A':
		ret = st.arrayType(isCast)
	case 'M':
		ret = st.pointerToMemberType(isCast)
	case 'T':