}
	}
	n := len(p.stack)
	if n == 0 {
		return "", &Error{ErrMissingRepeatArgument, before[:len(before)-len(after)]}
	}
	sub := p.stack[n-1]
	if sub.Op >= opPseudo {
		return "", &Error{ErrMissingRepeatArgument, before[:len(before)-len(after)]}
	}

	re := p.newRegexp(op)
	re.Min = min
	re.Max = max
	re.Flags = flags

		{"ErrInvalidRepeatSize", Const, 0},
		{"ErrInvalidUTF8", Const, 0},
		{"ErrLarge", Const, 20},
		{"ErrMissingBracket", Const, 0},
		{"ErrMissingParen", Const, 0},
		{"ErrMissingRepeatArgument", Const, 0},
		{"ErrNestingDepth", Const, 19},
		{"ErrTrailingBackslash", Const, 0},
		{"ErrUnexpectedParen", Const, 1},
		{"Error", Type, 0},
		{"Error.Code", Field, 0},
		{"Error.Expr", Field, 0},

pkg regexp/syntax, const ErrInvalidUTF8 ErrorCode
pkg regexp/syntax, const ErrMissingBracket ErrorCode
pkg regexp/syntax, const ErrMissingParen ErrorCode
pkg regexp/syntax, const ErrMissingRepeatArgument ErrorCode
pkg regexp/syntax, const ErrTrailingBackslash ErrorCode
pkg regexp/syntax, const FoldCase Flags
pkg regexp/syntax, const InstAlt InstOp
pkg regexp/syntax, const InstAltMatch InstOp

pkg regexp/syntax, const ErrInvalidUTF8 = "invalid UTF-8"
pkg regexp/syntax, const ErrMissingBracket = "missing closing ]"
pkg regexp/syntax, const ErrMissingParen = "missing closing )"
pkg regexp/syntax, const ErrMissingRepeatArgument = "missing argument to repetition operator"
pkg regexp/syntax, const ErrTrailingBackslash = "trailing backslash at end of expression"
pkg regexp/syntax, const ErrUnexpectedParen = "unexpected )"