panic(phasePanicMsg)
		}
		n, err := d.convertNumber(string(item))
		if err != nil {
			d.saveError(err)
		}
		return n
	}
}

// getu4 decodes \uXXXX from the beginning of s, returning the hex value,
// or it returns -1.
func getu4(s []byte) rune {
	if len(s) < 6 || s[0] != '\\' || s[1] != 'u' {
		return -1
	}
	var r rune
	for _, c := range s[2:6] {
		switch {

		zheadersize = 30
		zheader     = 0x04034b50
	)

	buf := make([]byte, ztailsize)
	if err := preadn(fd, buf, -ztailsize); err != nil || get4(buf) != zecheader {
		return nil, errors.New("corrupt zip file " + zipfile)
	}
	n := get2(buf[10:])
	size := get4(buf[12:])
	off := get4(buf[16:])

	buf = make([]byte, size)
	if err := preadn(fd, buf, off); err != nil {
		return nil, errors.New("corrupt zip file " + zipfile)

	}

	// If no version suffix is specified, assume @upgrade.
	// If -u=patch was specified, assume @patch instead.
	version := rawVers
	if version == "" {
		if getU.version == "" {
			version = "upgrade"
		} else {
			version = getU.version
		}
	}

	q := &query{
		raw:            raw,
		rawVersion:     rawVers,
		pattern:        pattern,